Microscope Eye Piece Camera

Quick Answer: The Microscope Eye Piece Camera is a digital camera made to sit in the eyepiece tube of a microscope, capturing still images and video of the specimen for viewing and saving on a computer. Labs use a microscope eyepiece camera to turn an existing optical microscope into a simple imaging system.

From Observation to Record

A drawing in a practical book records what a student saw, but a photograph lets anyone check it later. The eyepiece camera captures the image formed by the objective and saves it as a file, so a laboratory can keep a record of a stained section, a culture smear or a crystal preparation. That is useful for reports, assessment evidence and a bank of teaching images made from the department’s own slides.

Because the camera simply takes an eyepiece’s place, the microscope itself needs no modification. Unlike a trinocular microscope with a separate camera port, the observer cannot look through that eyepiece while the camera is in it; on a binocular head, the other eyepiece stays in use. Sensor details, file formats, software and tube diameter are not given in the listing, so check them against your microscope before ordering.

LabEquip lists two similar eyepiece cameras. This page covers the Microscope Eye Piece Camera for image capture and records, while the Eyepiece Camera for Microscopes page describes its use for class display. Compare the resolution, connection and software offered for each when you enquire.

Specifications

Item	Digital eyepiece camera for microscopes
Fitting	Inserted into the eyepiece tube in place of an eyepiece
Function	Still images and video of the specimen on a computer
Microscopes	Monocular, binocular and stereo models with removable eyepieces
Resolution, connection, software and tube diameter	Confirm at enquiry

Applications

Photographing stained tissue sections and smears for lab records and reports
Collecting images of students’ own preparations as assessment evidence
Recording video of moving organisms such as Paramecium or rotifers
Producing worksheets and teaching images from the department’s slide collection

Care & Handling

Keep the microscope eyepiece camera capped when it is not in use, and never touch the sensor window.
Take the camera out before carrying the microscope, so its weight and cable do not strain the eyepiece tube.
Save image files in dated folders named with the slide and objective used, so the records stay useful.
Keep a copy of the driver or software with the camera, and install updates only from the supplied source.

Why Choose LabEquip

University departments, pathology teaching labs and schools that want photographic records of practical work add eyepiece cameras to microscopes they already own. The camera is part of the Microscope & Optics range; give your microscope model on the contact page and LabEquip will check the fit.

Frequently Asked Questions

How is this camera different from a trinocular microscope?

A trinocular microscope has a third tube for a camera, so both eyepieces stay free for viewing. An eyepiece camera occupies one eyepiece tube instead, which adds imaging to a monocular or binocular microscope you already own without replacing it.

How do I add a scale bar to my images?

Photograph a stage micrometer with the same objective and camera settings, then use that image to calibrate the software’s measuring tool, if one is provided, or to draw a scale bar of known length. Recalibrate whenever the objective or camera setting changes.

Is the image quality the same as looking through the eyepiece?

The eye adapts to a wide range of brightness and sees a larger field, so a camera image usually shows a smaller area and less detail in very bright or dark regions. Careful focusing and even illumination narrow that gap for most teaching and record work.

Which file formats should I save images in?

Save master images in a lossless format such as TIFF or PNG if the software offers one, and export JPEG copies for reports and presentations. Editing and resaving JPEG files repeatedly lowers their quality a little each time.

Why do my photographs look darker or bluer than the view by eye?

Cameras respond to light differently from the eye. Raise the lamp brightness slightly, open the condenser diaphragm a little, and set the white balance on an empty, bright part of the slide before capturing.

Can I use the camera with a phone or tablet?

Only if the camera and its software support that device. Many eyepiece cameras are designed to connect to a computer, so check the supported devices and operating systems before ordering.

Last Updated: September 2026

Microscope Dust Cover

Quick Answer: The Microscope Dust Cover is a fitted cover pulled over a microscope when it is not in use, keeping dust off the eyepieces, objectives, stage and focusing mechanism. A microscope dust cover is the simplest routine protection for a class set between lessons.

Why Dust Matters to a Microscope

Dust settles on the top lens of the eyepiece and on the objectives, where it scatters light and shows up as specks and a grey haze in the image. It also collects in the grease of the focusing rack and the stage slides, stiffening the controls over time. A cover keeps most of this away with no more effort than pulling it over the instrument at the end of a lesson.

In humid weather the cover has a second job, because lens fungus grows where dust, moisture and still air meet. The cover should go on only when the microscope is clean and dry, and covered microscopes should still be kept in a ventilated cupboard, ideally with silica gel. Covering a damp instrument traps moisture and does more harm than good.

Covers are made in different sizes and materials, from clear vinyl to cloth, and the listing states neither, so give the height and base size of your microscope, or its model, when ordering. Stereo microscopes such as the Student Stereo Microscope, Basic are often wider at the head and need a cover sized for them.

Applications

Covering a class set of student microscopes between lessons and over holidays
Protecting a teaching or research microscope left set up on the bench
Keeping dust off microscopes stored on open shelving in a prep room
Cutting lens-cleaning time before practical examinations

Specifications

Item	Dust cover for microscopes
Purpose	Keeps dust off optics and mechanism during storage
Used on	Compound and stereo microscopes when not in use
Used with	Eyepiece and objective caps, silica gel in storage
Size and material	Confirm at enquiry

Care & Handling

Put the dust cover on only after the stage is wiped, slides are removed and the lamp has cooled.
Shake out or wipe the cover regularly; a dirty cover drops dust onto the microscope as it is lifted off.
Fold or hang the cover while the microscope is in use, rather than leaving it on the bench where it picks up stains and water.
Replace covers that are torn or have become brittle.

Why Choose LabEquip

Any school or college with a set of microscopes benefits from covers, and they are often ordered with new instruments or when an older set is overhauled. Covers are part of the Microscope & Optics range; send your microscope model and the number needed through the contact page.

Frequently Asked Questions

Does a dust cover stop lens fungus?

Not on its own. It keeps dust off, which removes one thing fungus needs, but fungus also needs moisture and still air. Store covered microscopes in a dry, ventilated place and use silica gel in closed cupboards during humid months.

Should the microscope be covered while the lamp is still warm?

No. Let the lamp cool first. Heat trapped under a cover warms the instrument and can soften some cover materials, and a halogen or filament bulb stays hot for several minutes after switching off.

Do I still need eyepiece caps if I use a cover?

The cover protects the outside, but if an eyepiece is removed for storage, the open tube should be capped so dust cannot fall onto the prisms or objective inside. Leaving the eyepieces in place under the cover avoids the problem.

Can one cover size fit both compound and stereo microscopes?

Only if the size happens to suit both. Stereo microscopes are often wider at the head and pillar, while compound microscopes are taller and narrower, so check the height and base size of each model.

How should I clean a microscope before covering it?

Remove the slide, wipe the stage with a damp cloth and dry it, clean oil off the immersion objective with lens tissue, lower the stage or body to its storage position and switch off. Then fit the cover.

Is a cover a substitute for a microscope cabinet?

No. A cabinet protects against knocks, handling and loss, while a cover keeps off dust. Many labs use both, fitting covers to microscopes that are stored inside cupboards or cabinets.

Last Updated: September 2026

Micro Cover Glasses for Microscope – Square, Circular and Rectangular

Quick Answer: Micro Cover Glasses for Microscope are very thin, flat pieces of glass laid over a specimen on a microscope slide, supplied in square, circular and rectangular shapes. Micro cover glasses flatten the mount, hold liquid in place and protect the objective lens from the specimen.

What the Cover Glass Does

A cover glass has three jobs. It flattens a wet mount into a thin, even layer so the whole field comes into focus together; it slows evaporation and stops the liquid spreading across the slide; and it keeps stain and water off the front lens of the objective. In permanent preparations it also seals the specimen under a mounting medium so the slide can be used for years.

Thickness matters more than most users realise. High-power dry objectives are designed to look through a cover glass of a set thickness, commonly 0.17 mm, and a much thicker or thinner glass softens the image at high magnification. Cover glasses are graded by thickness number, with No. 1 and No. 1.5 the grades most used in teaching and routine labs. The listing names only the shapes, so state the thickness grade and sizes you need when ordering.

Each shape has its own jobs. Square glasses cover a routine wet mount such as onion epidermis or a drop of pond water. Circular glasses are used where a round well or dish is involved, for example when cells are grown on a cover glass in a culture dish. Rectangular glasses cover long specimens: blood smears, sections cut on a hand microtome, or several sections laid on one slide.

Specifications

Item	Cover glasses (cover slips) for microscope slides
Shapes	Square, circular and rectangular
Material	Thin glass
Grades used in teaching	No. 1 and No. 1.5 thickness are the usual choices
Sizes and thickness grade supplied	Confirm at enquiry

Applications

Wet mounts of onion epidermis, cheek cells, yeast or pond water in school practicals
Permanent mounts of sections and smears with a mounting medium
Covering blood smears and long tissue sections with rectangular glasses
Growing cultured cells on circular glasses in dishes for later staining

Care & Handling

Pick micro cover glasses up by the edges with fine forceps; fingerprints on the glass appear as smears in the image.
Lower the glass at an angle from one edge with a mounted needle, so air is pushed out instead of trapped as bubbles.
Put used and broken cover glasses in a sharps or broken-glass container, not the general bin.
Keep the box closed and dry, because damp glasses stick together and are hard to separate.

Why Choose LabEquip

Cover glasses are a consumable that every microscopy lab reorders, from school biology rooms to pathology teaching labs. They are listed in the Microscope & Optics range with slide storage and staining items; list the shapes, sizes and quantities you need on the contact page.

Frequently Asked Questions

What thickness of cover glass should I use?

For general teaching and most high-power dry objectives, No. 1.5 glasses, about 0.16 to 0.19 mm thick, match the thickness the objectives are designed for. No. 1 glasses are slightly thinner and are also widely used for routine work.

How do I avoid air bubbles under the cover glass?

Put a drop of liquid on the specimen, touch one edge of the cover glass to the slide beside the drop, and lower the other edge slowly with a mounted needle. The liquid spreads ahead of the glass and pushes the air out.

Can cover glasses be cleaned and reused?

They can be washed in detergent, rinsed and kept in alcohol for reuse in simple wet mounts, but they are so thin that many break in handling. Most labs treat them as consumables and use fresh ones for stained or permanent preparations.

Which shape should I use for a blood smear?

A rectangular glass is usual, because it covers the long feathered edge of the smear where cells lie in a single layer. Many smears are examined under oil without a cover glass, but a covered smear keeps longer.

How do I stop a wet mount drying out during a long practical?

Seal the edges of the cover glass with a thin ring of petroleum jelly or nail varnish, or use a slightly larger glass. A drop of water added at the edge also tops up a mount that is starting to dry.

Why does my high-power image look hazy even when focused?

Common causes are a cover glass that is too thick, mountant smeared on top of the glass, or a glass tilted over a lumpy specimen. Use the correct thickness, keep the top surface clean and make the specimen thin enough to lie flat.

Last Updated: September 2026

LED Ring Lights

Quick Answer: The LED Ring Lights are circular illuminators with a ring of LEDs that fit around the objective of a stereo microscope, lighting the specimen evenly from above. An LED ring light runs cool, so it suits live material and long dissection sessions.

Even Top Light for Stereo Work

Stereo microscopes are used on solid, opaque objects such as insects, seeds, flowers, rock chips and circuit boards, and these need light from above. A single spot lamp throws hard shadows to one side; an LED ring light surrounds the lens with light sources, so shadows are filled in from every direction and the whole field is lit at once. That makes counting, sorting and drawing easier for students.

LEDs put little heat onto the specimen compared with filament lamps, which matters when a dissection or a live insect stays under the light for a long time. LED rings also light instantly and generally outlast fluorescent ring tubes. The listing does not state the number of LEDs, any brightness control or the mounting diameter, so check the mounting size against your microscope’s objective housing.

Even lighting is not always what you want. Surface texture, such as leaf ridges or tool marks on metal, shows more clearly with light from one side, and a gooseneck arm halogen lamp can add that oblique light alongside the ring. LabEquip also lists a general Ring Lights item; this page covers the LED version.

Applications

Dissections of flowers, earthworms or insects under a stereo microscope
Examining and sorting seeds, soil animals or small fossils
Inspecting solder joints and printed circuit boards in electronics labs
Viewing mineral grains and hand specimens in geology practicals

Care & Handling

Switch the LED ring off before fitting or removing it, and tighten the clamping screws only enough to hold it.
Wipe the diffuser with a dry, soft cloth; solvents can cloud a plastic diffuser.
Keep dissection fluids and water away from the ring, as it is an electrical item.
Route the cable away from the focus knob so it does not wind up as the microscope is focused.

Specifications

Item	Ring illuminator for microscopes
Light source	LED
Mounting	Around the objective of a stereo or inspection microscope
Lighting type	Incident top light, even and with few shadows
Mounting diameter and power supply	Confirm at enquiry

Why Choose LabEquip

Schools and colleges with stereo microscopes, and workshops doing small-part inspection, buy LED rings to replace mirror or single-lamp lighting. They can be ordered with stereo microscopes from the Microscope & Optics range, or tell us your objective housing size on the contact page.

Frequently Asked Questions

Will this ring light fit my stereo microscope?

Ring lights clamp around the objective housing with small screws and cover a range of housing diameters, sometimes with adapter rings. Measure the outer diameter of the lower part of your microscope body and compare it with the ring’s inside diameter.

Why use a ring light instead of the microscope’s built-in top light?

A built-in top light usually shines from one angle and leaves shadows. A ring surrounds the lens, so it lights all sides of a three-dimensional object, which helps when students need a clear, even view for counting or drawing.

Does an LED ring light cause glare on shiny specimens?

It can, because the light falls straight down onto polished or wet surfaces. Tilting the specimen slightly, dimming the ring if a control is fitted, or adding a polarising filter where one is available reduces the glare.

Is the LED ring suitable for live specimens?

Yes. LEDs produce much less heat at the specimen than halogen or incandescent lamps, so small live animals and moist tissues warm up and dry out more slowly under them.

Can a ring light be used on a compound microscope?

Generally no. Compound microscopes light transparent slides from below, and their objectives work too close to the slide for a ring to help. Ring lights are made for stereo and inspection microscopes with a long working distance.

How do LED rings differ from fluorescent rings?

Both light the field evenly. LED rings run cool, switch on instantly and rarely need parts replaced. Fluorescent rings use a circular glass tube that gives very soft light but is fragile and must be replaced when it wears out.

Last Updated: September 2026

Intra Oral Dental Camera

Quick Answer: The Intra Oral Dental Camera is a slim handheld wand camera that is placed inside the mouth to show teeth and gums on a computer or monitor. Dental and dental hygiene courses use an intra oral dental camera so that a whole group can see what normally only the person at the chair can see.

The Intra Oral Camera in Dental Teaching

Looking into a mouth is a one-person job: only the operator has a clear view. An intra oral dental camera changes that by carrying a lens and light to the tooth surface and sending the picture to a screen. In a teaching clinic or skills lab, a supervisor can show students a buccal surface, a restoration margin or plaque deposits on a phantom head or a volunteer, and the whole group sees the same close-up.

The camera is also a documentation tool. Still images captured before and after a scaling exercise show students what they achieved, and images can be discussed later without the model or volunteer in the chair. The listing does not state the resolution, connection or software, so check these, along with the computer operating system you use, when enquiring.

This page describes the camera as a teaching and documentation instrument. It is not presented as a diagnostic device, and anyone planning to use it in routine patient care should check the local regulatory requirements for dental imaging equipment and follow the supplied instructions.

Specifications

Item	Handheld intra oral camera
Use	Close-up viewing and image capture inside the mouth
Display	External computer or monitor
Infection control	Used with a disposable barrier sleeve for each person
Resolution, connection and software	Confirm at enquiry

Applications

Demonstrating tooth surfaces and restorations to a group in dental or dental hygiene training
Recording before-and-after images of scaling or polishing exercises on phantom heads
Showing oral anatomy such as cusps, fissures and the gingival margin at close range
Building an image bank for tutorials and assessment discussions

Care & Handling

Cover the intra oral dental camera wand with a new disposable barrier sleeve for every person, and never reuse a sleeve.
Disinfect the wand between uses with a product the camera’s instructions permit; do not immerse or autoclave it unless the instructions allow it.
Store the wand in its holder, not loose in a drawer, so the lens window does not get scratched.
Coil the cable loosely and avoid kinking it where it joins the handpiece.

Why Choose LabEquip

Dental colleges, dental hygiene schools and clinical skills labs buy intra oral cameras to make chairside teaching visible to a group. The camera is listed under Microscope & Optics; describe your display set-up and course needs to LabEquip through the contact page.

Frequently Asked Questions

What does an intra oral camera show that a mouth mirror does not?

A mouth mirror gives the operator alone a reflected view. The camera shows an enlarged image on a screen that several people can watch at once, and it can capture still images for later discussion, which a mirror cannot.

Is the camera a diagnostic device?

It is described here as a teaching and documentation tool. Diagnosis rests with a qualified dentist using appropriate clinical methods, and any clinical use of the camera should follow local regulations for dental equipment.

How is cross-infection prevented?

A new disposable barrier sleeve goes over the wand for each person and is removed after use, followed by surface disinfection with a product approved in the camera’s instructions. The sleeve should sit snugly over the lens window so the image stays clear.

Can it be used on phantom heads and typodonts?

Yes. Phantom heads and typodont models are ideal for practice, because students can learn to position the camera and capture images without time pressure or discomfort for a patient.

Why are the images blurred or too bright?

Blur usually comes from holding the tip too close or moving during capture, so hold it steady at the working distance given in the instructions. Glare from wet enamel is reduced by drying the surface gently with air and angling the camera slightly.

What computer set-up is needed?

That depends on the connection and software supplied with the camera. Check the required operating system and whether a driver is needed, and test the camera on the teaching computer or monitor before the first class.

Last Updated: September 2026

Graduated Mechanical Stage for Microscope

Quick Answer: The Graduated Mechanical Stage for Microscope is an attachable slide mover that fits onto a plain microscope stage and shifts the slide front-to-back and side-to-side with two knobs. Its graduated scales let the user note a position and return to it later.

Why Add a Mechanical Stage

A plain stage with two spring clips is fine for a quick look at onion peel, but pushing a slide by hand at 400x total magnification is clumsy, and the smallest nudge sends the field out of view. A graduated mechanical stage grips the slide in a holder and moves it in controlled steps along two axes, so the user can travel across a smear in straight rows without missing or repeating fields.

The graduations set this accessory apart from a plain slide holder. Each axis carries a scale, normally read with a vernier, so a position can be written as two numbers, rather like a map grid reference. Recording those numbers next to a rare cell type or a clear example of a parasite means the same field can be found again later, by the student or by the teacher checking the work.

Attachable stages are fixed to the microscope stage with one or two screws, and the hole positions and stage size vary from one microscope model to another. The listing does not tie this stage to a particular microscope, so give the make and model, or a photo of the stage, when you enquire. A mechanical stage is also handy for positioning a stage micrometer precisely during calibration.

Specifications

Item	Attachable mechanical stage for microscopes
Movement	Two axes, front-to-back and side-to-side, by control knobs
Scales	Graduated on both axes for recording positions
Slide holding	Holder that grips the slide at its edges
Fixing holes and fit for your model	Confirm at enquiry

Care & Handling

Keep oil and mounting fluid off the graduated mechanical stage, and wipe spills at once with a lint-free cloth so the slideways do not become sticky.
Turn the knobs gently to the end of their travel and no further; forcing them strips the rack teeth.
Never lift or carry the microscope by the mechanical stage.
Check the fixing screw each term, since a loose stage lets the slide drift while focusing.

Applications

Scanning a stained blood smear systematically for differential cell counts
Searching a pond-water mount for protozoa in rows rather than at random
Recording the coordinates of a chosen field for a teacher to check or photograph
Upgrading older student microscopes that have only stage clips

Why Choose LabEquip

Colleges running haematology or microbiology practicals, and schools upgrading older student microscopes, are the typical buyers of attachable stages. LabEquip lists this one in the Microscope & Optics range; send your microscope details through the contact page so the fitting can be checked.

Frequently Asked Questions

How do I read the vernier on a mechanical stage?

Read the main scale at the zero line of the vernier, then find the vernier line that lines up exactly with a main-scale line and add that value as the decimal. Record both axes, for example 32.4 and 11.7, to locate a field.

Can I fit a mechanical stage to any microscope?

No. An attachable stage needs fixing holes in the right place and a stage of suitable size. Many student microscopes are drilled for one, but not all. Compare the hole positions with the stage before ordering, or send a photo of your stage with the enquiry.

Are the coordinates the same on another microscope?

Only on an identical microscope and stage. The numbers relate to where the stage is fixed on that instrument, so a position noted on one microscope will not usually find the same field on a different model.

Should I remove the stage clips when fitting a mechanical stage?

Usually yes. The clips get in the way of the slide holder, so they are unscrewed and stored, and on many student microscopes the mechanical stage is fixed using one of the clip holes.

Why does my slide drift when I focus?

Drift usually means the fixing screw is loose or the slide is not seated fully in the holder. Tighten the screw, reseat the slide, and check that nothing, such as a dried drop of mountant, is lifting one end.

Does a mechanical stage help with oil immersion work?

Yes. At the highest magnification the field is tiny, and moving the slide by hand through oil is very hard to control. The knobs allow small, even movements, which makes scanning a blood or bacterial smear under oil practical.

Last Updated: September 2026

Eyepiece Camera for Microscopes

Quick Answer: The Eyepiece Camera for Microscopes is a small digital camera that fits into a microscope’s eyepiece tube in place of the eyepiece, so the view through the objective can be shown on a screen. Teachers use an eyepiece camera for microscopes to put one slide in front of the whole class.

Putting One Microscope on the Big Screen

In an ordinary microscope lesson, a teacher cannot be sure every pupil is looking at the right structure. An eyepiece camera for microscopes solves that by sending the image from the teacher’s microscope to a display or laptop, which can be projected. The class sees the same stage of mitosis or the same stomata the teacher is pointing at, before trying to find it on their own instruments.

The camera takes the place of the eyepiece: the eyepiece is lifted out and the camera barrel slides into the same tube, often with an adapter ring for wider tubes. The listing does not state the sensor, connection or software, so ask for those details, and for the tube diameter the camera fits, before ordering for a particular microscope. Because the camera sees the objective’s image without an eyepiece lens, the field on screen is usually smaller than the circle seen by eye, and a small refocus is normal.

Two related items are listed: the Microscope Eye Piece Camera, described for image capture and records, and a camera eyepiece with its own LCD screen. Cameras without a built-in screen, like this one, need a computer or display to show the picture, while the LCD version suits benches that have none.

Applications

Showing a prepared slide to a whole class before pupils search for the same structure
Displaying live pond-water organisms, whose movement makes taking turns at one eyepiece difficult
Guiding a practical step by step on screen while pupils follow at their own benches
Including pupils who find a monocular eyepiece hard to use

Care & Handling

Fit the dust cap to the eyepiece camera whenever it is out of the microscope, since dust on the sensor window appears as dark spots in every image.
Clean the window with a blower first and then lens tissue; never touch it with fingers.
Disconnect cables by the plug, not the lead, and route them so they cannot pull the microscope over.
Store the camera in its box with any adapter rings so the parts stay together.

Specifications

Item	Digital camera for the microscope eyepiece tube
Mounting	Replaces the eyepiece in the observation tube
Output	Live image on an external screen or computer
Typical microscopes	Student, laboratory and stereo models with a removable eyepiece
Sensor, connection, software and tube diameter	Confirm at enquiry

Why Choose LabEquip

Science teachers who demonstrate microscopy to a whole class are the usual buyers of this camera. Tell LabEquip the make or tube diameter of your microscopes through the contact page, and the camera and adapters can be matched from the Microscope & Optics range.

Frequently Asked Questions

Will the eyepiece camera fit my microscope?

It suits microscopes whose eyepiece lifts out of a round observation tube. The common tube diameter on student and laboratory microscopes is 23.2 mm, and wider tubes of 30 or 30.5 mm usually need an adapter ring. Measure your tube before ordering.

Why is the field on screen smaller than what I see through the eyepiece?

The camera sensor records only the central part of the image projected by the objective, while the eyepiece shows a wider circle. Centre the structure you want, or switch to a lower-power objective, to bring it into the captured area.

Do I need to refocus after fitting the camera?

Usually a slight turn of the fine focus is needed, because the sensor does not sit at exactly the plane your eye focuses on through the eyepiece. Focus while watching the screen, not the microscope.

Can the camera be used on a stereo microscope?

Yes, if one eyepiece of the stereo microscope can be removed and the tube diameter matches, possibly with an adapter. The screen then shows the view from one side only, so the image looks flat rather than three-dimensional.

How do I keep the class looking at the right feature?

Centre the feature, then point to it on screen with the cursor or a pointer, and name what pupils should look for. Switching between low and high power on screen shows where the detail sits within the whole specimen.

Can the camera stay on the microscope between lessons?

It can for a few lessons in a row, but remove it and refit the eyepiece before the microscope goes back into storage. That protects the camera and its cable and leaves the microscope ready for normal use.

Last Updated: September 2026

Eye Piece Graticule (Micrometer)

Quick Answer: The Eye Piece Graticule (Micrometer) is a small glass disc engraved with a scale that sits inside a microscope eyepiece, so the scale appears in focus over the specimen. Once the eyepiece graticule has been calibrated against a stage micrometer, it is used to measure cells, fibres and other small objects.

How the Graticule Scale Works

The graticule disc rests at the field stop of the eyepiece, the plane where the objective forms its image. Because the scale and the specimen image lie in the same plane, both look sharp together, and the scale can be laid across a cell or pollen grain much as a ruler is laid across a drawing. The divisions have no fixed value in micrometres, though. Their value depends on the objective in use, so the disc becomes a measuring tool only after calibration.

Calibration uses a stage micrometer, a slide ruled with a scale of known length. With both scales in view, the user lines up a division on each and counts how many eyepiece divisions cover a known length on the stage scale. Dividing that known length by the count gives the value of one eyepiece division for that objective. The routine is repeated for every objective and the results are written on a card kept with the microscope.

Graticules are made in several patterns: a straight linear scale, crosshairs for centring, or a square grid for counting cells or particles. The micrometer form named in this listing normally means a linear scale. Discs also come in different diameters to suit the eyepiece they sit in, so give the make or eyepiece type of your microscope when ordering.

Specifications

Item	Eyepiece graticule, micrometer type
Form	Glass disc carrying an etched scale
Position in use	Field stop inside the microscope eyepiece
Calibrated with	A stage micrometer, separately for each objective
Disc diameter and scale ruling	Confirm at enquiry, with your eyepiece type

Applications

Measuring cells, nuclei, pollen grains or starch grains in biology practicals
Estimating fibre diameters in textile or forensic science teaching
Following the growth of fungal hyphae or root hairs over several days
Comparing cell sizes across tissues, such as guard cells against epidermal cells

Care & Handling

Handle the graticule disc by its edges only, or with plastic-tipped tweezers, because a fingerprint on it will show in focus across the field of view.
Unscrew the eyepiece over a soft cloth when fitting the disc, so it cannot fall onto a hard bench.
Remove dust with a blower brush before wiping; a dry wipe drags grit across the etched lines.
Keep the calibration card with the microscope and recalibrate whenever an eyepiece or objective is changed.

Why Choose LabEquip

Teachers setting up cell-measurement practicals, and college labs running microbiology or histology courses, are the usual buyers of graticules. They are listed in the Microscope & Optics range alongside the stage micrometer needed to calibrate them; share your eyepiece type on the contact page so LabEquip can match the disc.

Frequently Asked Questions

What is the difference between an eyepiece graticule and a stage micrometer?

The eyepiece graticule sits inside the eyepiece and carries an uncalibrated scale used for measuring. The stage micrometer is a slide with a scale of known length that sits on the stage and is used only to work out what each graticule division is worth.

Why do I have to recalibrate for each objective?

The objective magnifies the specimen but not the graticule, which is already in the eyepiece. Switching from low to high power makes the specimen look larger against the same scale, so each division then represents a smaller real distance.

How do I fit the graticule into my eyepiece?

Unscrew the top lens section of the eyepiece, lay the disc on the ledge of the field stop with the engraved side facing down, as most eyepieces require, and screw the lens back. If the lines look fuzzy, the disc is upside down or the eyepiece focus needs adjusting.

Can I measure with the graticule without calibrating it?

Only in relative terms. You can say that one cell spans eight divisions and another spans four, but you cannot express either in micrometres. Syllabus measurement tasks normally require the calibrated value.

How do I calculate a cell’s actual size?

Multiply the number of eyepiece divisions the cell spans by the calibrated value of one division for that objective. For example, a cell spanning 12 divisions, where each division is worth 2.5 micrometres, measures 30 micrometres across.

Which microscopes can take an eyepiece graticule?

Most eyepieces with an internal field stop can hold a disc of the right diameter, and some measuring eyepieces have a focusing top lens for sharper lines. Give your microscope model or eyepiece details in your enquiry so the diameter can be matched.

Last Updated: September 2026

Drying Tray, Aluminium/Stainless Steel

Quick Answer: The Drying Tray, Aluminium/Stainless Steel is a flat, shallow metal tray on which washed slides, small glassware and samples are laid out to dry, either on the bench or on the shelf of a drying oven. This laboratory drying tray is offered in either aluminium or stainless steel.

What a Metal Drying Tray Does at the Bench

A laboratory drying tray gives wet items a defined place to drain and dry instead of a paper towel at the edge of the sink. In a microscopy room that usually means washed glass slides and coverslip dishes after a practical, stained smears left to air-dry before examination, or staining jars turned upside down. In a general laboratory the same tray holds small beakers, watch glasses, crucible lids and filter papers carrying precipitates.

Metal is chosen over plastic because the tray can go into a hot air oven together with its load. Aluminium and stainless steel both tolerate the temperatures normally used for drying glassware, so the whole tray goes in and the whole tray comes out, handled with heat-resistant gloves, instead of a dozen small hot items being moved one at a time.

The two materials in the title behave differently. Aluminium is light and spreads heat quickly, so a loaded tray is easy to carry and warms evenly, but strong alkalis and some acids attack it, and it dulls or pits if left wet with salt or bleach solutions. Stainless steel is heavier, yet it stands up better to repeated washing, disinfectants and splashes of dilute acid, which suits trays that also see staining work.

Applications

Air-drying washed microscope slides and coverslip dishes after a practical session
Carrying a batch of small glassware into and out of a hot air oven
Drying precipitates on filter paper in gravimetric exercises
Holding stained smears flat while they dry before examination
Catching drips under staining jars or dropping bottles on the bench

Specifications

Item	Flat drying tray for laboratory use
Material options	Aluminium or stainless steel, as named in the listing
Typical load	Washed slides, small glassware, crucible lids, filter papers
Heat use	Bench drying or on the shelf of a drying oven
Size and rim height	Confirm at enquiry

Care & Handling

Let the drying tray cool on a heat-resistant surface before stacking it or putting plastic items on it.
Wash aluminium trays with a mild detergent and avoid caustic cleaners, which blacken and pit aluminium.
Rinse off stain, salt or disinfectant residues promptly, even from stainless steel, so they do not dry into marks.
Dry the tray fully before storing it, and store trays flat so the rims do not bend.

Why Choose LabEquip

Biology and chemistry departments usually order drying trays together with other bench metalware for slide and glassware handling. In the Microscope & Optics range this tray sits beside the matching carrying tray, made in the same two metals; send the material and quantity you want through the LabEquip contact page.

Frequently Asked Questions

Should I choose aluminium or stainless steel for a drying tray?

Choose aluminium if the tray will mostly carry rinsed items and weight matters, because it is light and warms evenly. Choose stainless steel if the tray will meet disinfectants, stains or dilute acids, or will be scrubbed daily, since it resists corrosion better.

Can the drying tray go in a hot air oven?

Yes, metal trays are commonly used on oven shelves for drying glassware and samples. Keep plastic and rubber items off the tray, set the oven to the temperature the load needs, and take the tray out with heat-resistant gloves.

Is it safe to dry microscope slides on a metal tray?

Yes. Lay washed slides on a lint-free cloth or filter paper on the tray so water drains away and they do not stick to the metal. Stained smears should stay flat until completely dry before a cover glass or immersion oil is applied.

Can I use the tray inside an autoclave?

Stainless steel is the usual choice for autoclave loads because it tolerates repeated steam cycles well. Aluminium can darken with repeated autoclaving, so many labs keep aluminium trays for dry heat and bench use.

How do I clean dried stain or residue off the tray?

Soak the tray in warm water with laboratory detergent and wipe with a soft sponge. On stainless steel, a little alcohol on a cloth usually lifts stubborn stain. Avoid steel wool and scouring powder on aluminium, as scratches make later stains harder to remove.

What is the difference between this drying tray and a carrying tray?

Both are flat metal trays, but a drying tray is where items sit to drain and dry, including inside an oven, while a carrying tray moves apparatus or specimens between bench, sink and cupboard. Keeping separate trays stops dirty and clean items being mixed.

Last Updated: September 2026

Dark Field Condenser

Quick Answer: The Dark Field Condenser is a microscope condenser that blocks the central light and sends only an oblique hollow cone onto the specimen, so that only light scattered by the specimen enters the objective. A dark field condenser makes unstained, transparent objects appear bright against a black background.

How Dark Field Illumination Works

In ordinary brightfield, direct light from the condenser passes into the objective and fills the field, so small transparent objects barely show. A dark field condenser uses a central stop, or curved reflecting surfaces, to remove the central rays and send light in at an angle too steep for the objective to collect. With no specimen, the field is black. Anything that scatters light, such as a bacterium, a diatom or a blood platelet, sends some of it into the objective and appears as a bright outline.

For the method to work, the numerical aperture of the objective must be lower than that of the light cone from the condenser. At low and medium power a dry condenser of this kind is enough; high-power oil objectives need an oil-immersion version, with oil between condenser and slide, and an objective whose aperture can be reduced. The listing does not state whether this condenser is a dry or oil type, or its mounting diameter, so check compatibility with your microscope before ordering.

Fitted in place of the brightfield condenser, it turns an ordinary light microscope into a tool for living, unstained material, from pond water to motile bacteria.

Applications

Observing live, unstained bacteria and their motility
Viewing spirochaetes, which are too thin to see well in brightfield
Examining diatoms, protozoa and pond water organisms
Looking at blood cells and platelets in fresh wet preparations

Specifications

Accessory	Substage condenser for dark field illumination
Principle	Hollow cone of oblique light; direct light excluded
Image	Bright specimen on a black background
Objective requirement	Objective aperture lower than the condenser light cone
Dry or oil type and mounting fit	Confirm at enquiry

Care & Handling

Keep the top lens of the dark field condenser spotless; any dust or smear scatters light and turns the black background grey.
Use clean slides and cover slips of normal thickness, since thick slides can stop the light cone meeting at the specimen.
If an oil-immersion type is used, wipe the oil off the top lens after every session with lens tissue.
Store the condenser in its case with the lens capped whenever it is off the microscope.

Why Choose LabEquip

Microbiology teaching labs, college biology departments and research groups that want dark field on existing microscopes buy this accessory. It is listed in the LabEquip Microscope & Optics range; send your microscope model through the contact page to check the fit.

Frequently Asked Questions

What is the difference between dark field and brightfield?

In brightfield, light passes straight through the specimen into the objective and the background is bright. In dark field, only light scattered by the specimen reaches the objective, so the background is black and edges glow.

Why is my background grey instead of black?

Dust, fingerprints or air bubbles scatter light, or the objective’s aperture is too high for the condenser. Clean the slide and condenser, check it is centred and at the right height, and use a lower-aperture objective.

Can I use dark field with a 100x oil objective?

Only with an oil-immersion dark field condenser and an objective whose aperture can be reduced, usually with a built-in iris. Otherwise the objective collects direct light and the dark background is lost.

Do specimens need staining?

No. Dark field is designed for unstained, living material, which is why it is used for motile bacteria, spirochaetes and pond organisms. Stained specimens gain little from it.

How do I centre the condenser?

Focus on a specimen at low power, raise the condenser close to the slide and use the centring screws until the ring or spot of light sits in the middle of the field. Then adjust the height for the darkest background.

Will it fit my microscope?

Condensers mount in the substage holder, and mounting diameters differ between makes. Measure the diameter of your present condenser, or send your microscope model, before ordering.

Last Updated: September 2026