Cone, Single, Interchangeable

Quick Answer: A single interchangeable cone is one male ground-glass joint: a tapered, ground section of glass, typically with a plain tube (shank) extending from it. It fits into any socket of the same standard size, and is used by glassblowers and technicians to build, extend or repair apparatus.

What a Single Cone Is For

Ground-glass joints come in pairs: the tapered cone, which is the male part, and the socket, which receives it. A single interchangeable cone is the male half sold on its own. In most laboratories it is a component rather than finished apparatus: a glassblower fuses the shank onto a flask neck, tube or custom vessel to give it a standard joint, or replaces a broken cone on a condenser or adapter instead of discarding the whole piece.

Because the taper and diameter follow a standard, a new cone fits every socket of the same nominal size. Sizes are commonly written as two numbers, the diameter at the wide end and the ground length in millimetres, or as a code such as B19 or B24. The listing does not state the size or the form of the shank, so these should be specified.

In teaching, a spare cone is a simple way to show how a ground joint seals. A lightly greased cone turned in its socket becomes clear where the ground surfaces meet, and an even, transparent band is the sign of a good seal. Matching sockets and paired joints are listed as interchangeable joints.

Care & Handling

Apply grease as a thin ring around the upper third of the cone only, then seat and rotate; excess grease spreads into the apparatus.
Do not leave a cone seated for long in a socket that holds alkaline solution, which etches ground glass and can fuse the joint.
Store single cones wrapped separately so ground surfaces do not scratch against each other.
Anneal any cone fused to new glass, in an annealing oven or flame, to relieve stress at the seal.

Applications

Replacing a broken cone on a condenser, adapter or stopper-type fitting during glass repair
Adding a standard joint to a custom flask or tube in a glassblowing workshop
Making up adapters for non-standard apparatus in research labs
Demonstrating how ground joints seal when greased and seated

Specifications

Item	Single male ground-glass joint (cone)
Shank	Tube section for fusing or connecting; form not stated
Fits	Any socket of the same standard joint size
Uses	Glassblowing, repairs, custom apparatus, teaching joint sealing
Joint size and shank form	Confirm at enquiry

Why Choose LabEquip

Glassblowing workshops, university technicians and labs that repair their own glassware keep single cones in the sizes they use most. LabEquip stocks this component with its chemistry lab equipment; send the joint size and quantity through the contact page.

Frequently Asked Questions

What is the difference between a cone and a socket?

The cone is the male part of a ground joint, tapered and ground on the outside. The socket is the female part, ground on the inside to receive a cone of the same size. Together they form a sealed, removable connection.

What does interchangeable mean for ground joints?

It means every joint of a given nominal size shares the same taper and dimensions, so any cone fits any socket of that size from any maker. Parts can be swapped, replaced or combined without custom fitting.

How do I read a joint size such as 24/29?

The first number is the diameter at the wide end of the ground zone in millimetres, and the second is the length of the ground zone. A 24/29 cone fits any 24/29 socket.

How should a cone be greased?

Apply a thin ring of grease around the upper part of the cone, insert it, and turn it a little until the joint looks clear all round. A clear, even band shows a good seal; streaks show gaps.

Why do ground-glass joints seize?

Joints stick when grease hardens, when solids dry between the surfaces, or when alkaline solutions etch the glass. Separating joints after each use and keeping strong alkali out of greased joints prevents most seizures.

Can a single cone be fitted to existing apparatus?

Yes, by a glassblower, who joins the cone’s shank to the apparatus in a flame and then anneals it. It is a common way to repair a broken joint instead of replacing the whole piece.

Last Updated: September 2026

Cone Adapters, Straight Connection

Quick Answer: A straight cone adapter is a glass fitting with a ground-glass cone at one end and a straight tube at the other, in line with the joint. It lets rubber or plastic tubing be connected to any socket of matching size for gas, vacuum or vent lines.

The Simplest Joint-to-Tubing Link

Many ground-joint assemblies need a point where rigid glass meets flexible tubing, and this fitting is the most direct way to make it. Pushed into a socket, it continues the axis of the joint as a tube over which tubing can be slipped. Because it adds no bend and little height, it suits side necks that already point sideways, the outlet of a vacuum receiver or a horizontal socket on a manifold.

Straight adapters are also used where a set-up needs a slow bleed of gas, for example to pass nitrogen over a reaction, and on top of a reflux condenser when tubing can run straight up to a support before turning down to a trap. Compared with a bored rubber bung and glass tube, a ground cone gives a cleaner, more solvent-resistant seal in a ground-glass socket.

Joint size and tube diameter are not stated in the listing. For connections that must be shut off at the joint, the cone adapter with stopcock is the related option.

Specifications

Joint end	Ground-glass cone
Other end	Straight tube in line with the joint, for tubing
Function	Joins a socket to rubber or plastic tubing
Typical positions	Side necks, receiver outlets, manifold sockets
Joint size and tube diameter	Confirm at enquiry

Care & Handling

Choose tubing whose bore fits snugly over the tube end; loose tubing leaks and very tight tubing is hard to fit.
Keep the cone free of grit, which scratches ground surfaces and spoils the seal.
Clip the cone into its socket wherever tubing could pull it loose.
Rinse the bore after use with a solvent that removes any condensed residue.

Applications

Gas inlet into a horizontal side neck of a two- or three-neck flask
Vacuum or vent connection on the outlet socket of a receiver
Replacing a bung and glass tube in a ground-joint socket for better solvent resistance
Linking a set-up to a bubbler that shows the gas flow

Why Choose LabEquip

Teaching and research labs building ground-joint sets usually keep several straight cone adapters on hand for gas and vacuum lines. They can be ordered from LabEquip’s chemistry lab equipment range; tell us the joint size and tubing bore on the contact page.

Frequently Asked Questions

When is a straight cone adapter preferable to an angled one?

When the socket already points sideways or downwards, a straight adapter lets the tubing continue in the same direction without an extra bend. On an upright neck, an angled adapter usually gives a tidier, less strained tubing run.

Why use a cone adapter instead of a rubber bung with a tube?

A ground cone seals in a matching socket without rubber, which organic solvents can swell or dissolve. It also avoids fragments of rubber entering the reaction and is easier to remove and clean.

What tubing fits the adapter?

Rubber, silicone or plastic tubing with an internal bore that fits snugly over the glass end. For vacuum work, use thick-walled vacuum tubing so it does not collapse.

Can the straight cone adapter carry corrosive gases?

Glass resists most corrosive gases well. The limiting parts are usually the tubing and any grease on the joint, so choose tubing and sleeve materials that suit the gas.

How do I know the cone size?

Ground joints are normally marked with their size on the glass. Match that size to the socket, such as the side neck of your flask, before ordering.

Can I use one adapter on different flasks?

Yes, as long as each flask has a socket of the same joint size. That interchangeability is the main advantage of standard ground-joint glassware.

Last Updated: September 2026

Cone Adapters, Right Angle Connection With Stop-cock

Quick Answer: A cone adapter with stopcock is a glass fitting with a ground-glass cone, a stopcock tap and a side tube bent at a right angle. It connects a flask or apparatus to a gas or vacuum line and lets the connection be opened or closed at the joint, isolating the vessel without disconnecting the tubing.

Isolating a Vessel at the Joint

The tap is what separates this fitting from the plain angle and straight types. With the stopcock open, gas or vacuum passes between the tubing and the flask; turning it closes the flask off, so the flask can be taken away from the line, kept under an inert atmosphere or left under reduced pressure while the tubing is moved elsewhere. The right-angle side tube lets the tubing leave horizontally, which suits a flask clamped in a rack or standing beside a manifold.

The classic use is evacuate-and-refill: a flask containing an air-sensitive solid or solvent is connected, evacuated, then refilled with nitrogen or argon, and the cycle is repeated a few times before the tap is closed. The same fitting holds a dried flask under vacuum while it cools, lets air or gas into an evacuated flask gently, and vents pressure in a controlled way.

The title does not state the joint size, whether the stopcock key is glass or PTFE, or the bore of the tap. Glass keys need a thin film of grease; PTFE keys run dry. For lines that do not need a tap, see the angled cone adapter.

Applications

Evacuate-and-refill cycles for storing or reacting air-sensitive materials under nitrogen
Keeping an oven-dried flask under vacuum or dry gas while it cools
Admitting air slowly to an evacuated flask after drying
Isolating one flask from a shared gas or vacuum manifold

Specifications

Joint end	Ground-glass cone
Control	Stopcock to open or close the line at the joint
Side tube	Right-angle connection for tubing
Uses	Inert gas and vacuum lines, isolating flasks, controlled venting
Joint size and stopcock key material	Confirm at enquiry

Care & Handling

Turn the stopcock gently; forcing a stiff glass key can break the barrel, and warm water around the barrel often frees it.
Grease glass keys sparingly in two bands on either side of the bore, keeping the bore itself clear.
Store with glass keys removed or loosened and a slip of paper in the barrel, and keep each key with its own adapter.
Open the tap slowly when letting gas into an evacuated flask, so powders are not blown about.

Why Choose LabEquip

Research groups and advanced college labs that handle moisture- or air-sensitive chemistry use stopcock adapters on almost every flask. LabEquip provides this fitting from its chemistry lab equipment section; send the joint size and preferred key material through the contact page.

Frequently Asked Questions

Why choose an adapter with a stopcock?

The stopcock lets you close the flask off at the joint. You can then disconnect the tubing, move the flask, or keep it under vacuum or inert gas without air getting in.

Are stopcock keys in glass or PTFE preferable?

PTFE keys need no grease, so there is no grease contamination, and they rarely seize, but they must not be overtightened. Glass keys seal very well when lightly greased, but can stick if left unused or with dried grease.

How do I free a stuck glass stopcock?

Soak the barrel in warm water, then tap the key gently with a wooden handle while trying to turn it. Never use pliers or great force. Gentle warming of the barrel with a hair dryer can also soften old grease.

What does evacuate and refill mean?

It is a method of replacing the air in a flask with an inert gas. The flask is evacuated through the adapter, filled with nitrogen or argon, and the cycle is repeated two or three times so that very little air remains.

Can the adapter hold a flask under vacuum overnight?

A well-greased or PTFE stopcock and a sound ground joint can hold vacuum for long periods, but slow leaks at joints are common. Check the seal and secure the cone with a clip if a flask must be left sealed.

Which way should the tap point when open?

On most stopcocks the handle lines up with the flow path when open and lies across it when closed. Check by looking through the bore before use, since some designs differ.

Last Updated: September 2026

Cone Adapters, Angle Connection

Quick Answer: An angled cone adapter is a glass fitting with a ground-glass cone at one end and a tube bent at an angle at the other, usually finished for rubber tubing. It plugs into a socket and leads a gas, vacuum or vent line away sideways, so the tubing does not rise straight up from the apparatus.

Why the Connection Is Bent

A straight adapter sends tubing directly out along the axis of the joint. That is awkward at the top of a reflux condenser or on a vertical flask neck, where tubing standing straight up is easily knocked, pulls on the joint and can kink. Bending the connection to the side lets the tubing run down to a bubbler, trap or gas supply along the frame, with less leverage on the ground joint.

Typical positions are the top of a reflux condenser, where the adapter leads acid fumes or displaced air to a trap; a side neck of a multi-neck flask, where it brings in nitrogen; and the end of a set-up where a vent to the fume cupboard is needed. The cone end seals like any other ground joint, with a thin band of grease or a PTFE sleeve and a joint clip.

The title does not give the angle of the bend, the joint size or the tubing connection diameter. When the line must be opened and closed at the adapter itself, the right-angle cone adapter with stopcock adds a tap. Sizes are marked on the cone and should match the socket it goes into.

Care & Handling

Support the tubing separately with a clamp or clip so its weight does not lever the adapter out of the joint.
Push tubing onto the glass end with a twisting action after wetting it; forcing it straight on can snap the tube.
Never close off a vent adapter on a heated system; there must always be an open path for expanding gas.
Remove the adapter and clean the cone after each use so grease does not harden in the joint.

Specifications

Joint end	Ground-glass cone
Other end	Tube bent at an angle, typically finished for rubber tubing
Function	Leads gas, vacuum or vent lines sideways from a socket
Seal	Light grease or PTFE sleeve, secured with a joint clip
Bend angle, joint size and tube diameter	Confirm at enquiry

Applications

Venting the top of a reflux condenser to a gas trap or bubbler
Feeding nitrogen or another inert gas into a side neck of a reaction flask
Connecting a flask to a water filter pump for gentle evacuation
Routing tubing tidily in teaching assemblies where upright lines would be knocked

Why Choose LabEquip

Research groups and college organic labs use angled cone adapters to plumb inert-gas and vent lines neatly into their ground-joint glassware. The fitting is available through LabEquip’s chemistry lab equipment catalogue; send the joint size and tubing diameter through the contact page.

Frequently Asked Questions

What is the difference between an angle and a straight cone adapter?

Both have a ground cone at one end and a tubing connection at the other. In the angle adapter the connection is bent to the side, so the tubing leaves horizontally or downwards instead of pointing straight up from the joint.

Where is an angled cone adapter used most often?

At the top of a reflux condenser and on the side necks of reaction flasks, where tubing to a gas supply, bubbler or trap needs to run away from the apparatus without pulling on the joint.

How do I attach rubber tubing to the adapter without breaking it?

Wet the end of the tubing with water or a little glycerol, hold the glass close to the end being fitted, and ease the tubing on with a gentle twisting motion. Protect your hand with a cloth in case the glass breaks.

Do I need to grease the cone?

For most work, a light smear of grease around the top of the ground zone, or a thin PTFE sleeve, gives a gas-tight seal and stops the joint seizing. Avoid heavy greasing, which can contaminate the reaction.

What joint size should I order?

Order the size that matches the socket it will fit, such as the top of your condenser. The size is usually etched or printed on the glass as two numbers or a letter-number code.

Can this adapter be used on a vacuum line?

Ground-glass cone adapters are commonly used on vacuum lines, provided the joint is clean and lightly greased or sleeved, the cone is held with a clip, and thick-walled vacuum tubing is used.

Last Updated: September 2026

Adapters

Quick Answer: Glassware adapters are short glass connecting pieces that join components of an assembly, such as a flask to a condenser or a condenser to a receiver, when their joints, angles or functions do not match directly. This listing is titled generically, so the adapter type should be specified when ordering.

The Adapter Families in a Distillation Train

Follow the vapour through a ground-joint distillation and adapters appear at every junction. A still head sits on the flask and turns the vapour sideways into the condenser, often with a socket on top for a thermometer adapter, which grips the thermometer stem in a screw-cap seal. At the far end of the condenser a receiver adapter, sometimes called a bend, directs the distillate down into the collecting flask; the vacuum version has a side tube so the system can be run at reduced pressure.

Other adapters solve size and connection problems rather than direction. Expansion and reduction adapters change joint size, cone-to-tubing adapters connect a joint to rubber tubing for gas or vacuum, and multi-way pieces such as the Claisen adapter add extra necks to a single-necked flask. LabEquip lists several of these separately, including the expansion adapter and the straight cone adapter.

Because this listing is titled only Adapters, it does not show which of these types, which joint sizes or which glass is supplied. Describing the job the adapter must do, and the joint size needed at each end, is the quickest way to identify the right piece.

Specifications

Item	Glass connecting adapter for ground-joint assemblies
Common types	Still head, receiver bend, vacuum adapter, thermometer adapter, Claisen, size-change
Connections	Cone and socket ground joints, sometimes with tubing olives
Selection	Specify function and joint size at each end
Type, joint sizes and glass	Confirm at enquiry

Applications

Completing a simple or fractional distillation set from flask to receiver
Fitting a thermometer through a sealed joint to read vapour temperature
Adding a second neck to a round bottom flask for a dropping funnel and a condenser
Collecting distillate under reduced pressure with a vacuum receiver adapter

Care & Handling

Check the joint sizes marked on each adapter before assembly, since unmarked or mixed-up pieces are easily confused.
Support each junction with clamps so no adapter carries the weight of the pieces hanging from it.
Use joint clips on sloping joints such as the receiver bend, which can slide apart.
Separate every joint after use and wipe off grease so adapters do not seize in storage.

Why Choose LabEquip

Colleges and research labs that assemble their own distillation and synthesis sets buy adapters to fill gaps between existing pieces. LabEquip carries them in its chemistry lab equipment range; describe the connection you need on the contact page so the right type can be matched.

Frequently Asked Questions

Which adapter do I need to connect a flask to a condenser?

For distillation, a still head joins a round bottom flask to a condenser set at an angle; for reflux, the condenser fits straight into the flask neck and needs no adapter if the joint sizes match. If sizes differ, add a reduction or expansion adapter.

What is a receiver adapter?

It is the bent piece at the end of the condenser that directs the distillate down into the collecting flask. Vacuum receiver adapters have an extra side tube for connection to a vacuum source or to vent the system.

What does a thermometer adapter do?

It holds a thermometer in a ground joint with a screw cap and a rubber or silicone seal, so the bulb can be set at the correct height while the joint stays closed.

What is a Claisen adapter used for?

A Claisen adapter turns one flask neck into two. It is used when a flask needs both a condenser and a dropping funnel or thermometer, and its offset neck reduces the chance of liquid splashing into the condenser.

Are glass adapters interchangeable between brands?

Adapters fit any glassware with the same standard joint size and taper, regardless of maker, provided the ground surfaces are in good condition. Check the joint size marked on both parts before assembling.

How do I stop adapters from sliding apart?

Use plastic joint clips at each junction, especially where a joint slopes downwards, and clamp the main pieces to a stand so the weight is carried by the clamps rather than the joints.

Last Updated: September 2026

Wine Tasting Kit Complete

Quick Answer: The LabEquip Wine Tasting Kit Complete is an analytical kit for monitoring fermentation and sugar-to-alcohol conversion during winemaking, using specific gravity, Brix, and temperature readings — useful for teaching labs, food-science departments, and small-batch winemaking operations that need consistent, repeatable process checks.

Description

The LabEquip Wine Tasting Kit Complete gives students, food-science educators, and small winemaking operations a practical toolset for tracking fermentation progress. By combining specific gravity, Brix (sugar concentration), and temperature verification, it supports consistent monitoring of how sugars convert to alcohol as a batch ferments — a core concept in both applied food science and practical winemaking.

It is commonly used in food-science and biology teaching labs to demonstrate density-based measurement techniques, and in small-batch winemaking settings where batch-to-batch consistency depends on regular, accurate process checks rather than guesswork.

Key Features

Supports specific gravity, Brix, and temperature verification for fermentation monitoring
Useful for teaching density and sugar-concentration measurement concepts
Helps track sugar-to-alcohol conversion through a fermentation batch
Supports batch-to-batch consistency checks in small-scale winemaking
Compact enough for classroom or small-lab bench use

Applications

Monitoring fermentation progress via specific gravity and Brix readings
Tracking sugar-to-alcohol conversion during batch winemaking
Temperature verification to maintain consistent fermentation conditions
Food-science and biology teaching demonstrations on density and fermentation
Supporting batch-to-batch quality consistency in small-scale production

Specifications

Measured Parameters	Specific gravity, Brix, temperature
Primary Application	Fermentation and sugar-to-alcohol conversion monitoring
Typical Users	Food-science students, teaching labs, small-batch winemaking operations
Exact Instrument List & Case Contents	Not specified for this listing — confirm with our sales team
Brand	LabEquip

Care & Maintenance

Rinse and dry instruments after each use to prevent residue from affecting future readings.
Check hydrometer/refractometer accuracy periodically against a known reference before critical readings.
Store components in their case in a stable, dry location away from temperature extremes.
Handle glass instruments carefully to avoid chips or cracks that could affect accuracy or safety.
Avoid exposing components to strong solvents or abrasive cleaning materials.

Why Choose LabEquip

LabEquip supplies a wide range of General Items and analytical accessories, so this kit fits naturally alongside the storage and handling equipment labs already use day to day.

Keep samples and glassware organised with our Plastic Storage Boxes.
Move instruments safely between benches with our Plastic Carrier Tray.
Keep your bench tidy during wet sample work with our Draining Tray.
Chill samples for temperature-controlled readings with our Ice Bucket.

Frequently Asked Questions

1. What is the Wine Tasting Kit Complete used for?

It is used for monitoring fermentation and sugar-to-alcohol conversion during winemaking, through specific gravity, Brix, and temperature verification.

2. Who typically uses this kit?

Food-science students, teaching laboratories, and small-batch winemaking operations use this kit for process monitoring and consistency checks.

3. What does the Brix reading tell you?

Brix indicates the sugar concentration of a sample, which helps track how much sugar remains available for conversion during fermentation.

4. Why does temperature matter for these readings?

Specific gravity and Brix readings can be affected by temperature, so verifying temperature alongside these measurements helps keep readings consistent and comparable.

5. Is this kit suitable for a teaching lab?

Yes, it works well for food-science and biology teaching demonstrations on density-based measurement and fermentation concepts.

6. Is the exact list of included instruments available here?

A precise, itemised contents list is not specified for this listing — please confirm exact kit contents with our sales team before ordering.

Last Updated: September 2026

Urinometer

Quick Answer: The Urinometer is a small, calibrated glass hydrometer built specifically to measure the specific gravity of urine samples in clinical and laboratory settings, supporting basic hydration and renal-function assessment alongside other diagnostic tests.

Product Description

Like our other hydrometers, the Urinometer works on the buoyancy principle: it floats to a depth that corresponds to the density of the sample it is placed in. Because it is scaled specifically for the density range typical of urine (rather than water, milk, or general industrial liquids), it is a purpose-built clinical instrument rather than a general-purpose density tool. Urine specific gravity readings are used by hospitals and medical laboratories as one of several indicators in basic urinalysis.

What Makes This Instrument Distinct

The Urinometer’s compact size and narrow-range scale set it apart from industrial or dairy hydrometers — it is designed to work with the small sample volumes typical of a urine specimen jar, and its calibration reflects the density range relevant to human urine rather than a broader industrial scale. It is made from high-clarity glass so the scale markings remain easy to read against the sample.

Parameter	Detail
Type	Specific-gravity hydrometer, clinical/urine-calibrated
Material	High-clarity glass
Working Principle	Buoyancy / Archimedes’ principle
Typical Use	Hospital and clinical laboratories, basic urinalysis, renal-function/hydration screening
Exact Scale Range / Graduations	Confirm with our sales team for the exact scale and graduation interval on this listing

Care & Maintenance

Follow your facility’s biosafety protocol for handling and disposing of any instrument that has contacted a clinical sample.
Rinse and disinfect according to laboratory standard operating procedure immediately after each use.
Store upright in a padded holder — the weighted glass bulb at the base is the most fragile part.
Avoid dropping or knocking the instrument against glassware, as chips near the scale can make readings unreliable.
Periodically verify accuracy against a known reference standard as part of routine quality checks.

Why Choose LabEquip

LabEquip supplies hydrometers and measuring instruments for clinical, dairy, and industrial laboratories, with clear and honest product information. Browse our Measuring Instruments category for related density instruments, see our dairy-focused Lactometer, or visit our homepage for our full catalogue.

Frequently Asked Questions

What is a urinometer used for?
A urinometer measures the specific gravity of a urine sample, a reading used as part of basic urinalysis in clinical and hospital laboratories.

How does a urinometer work?
It works on the principle of buoyancy — the float sits at a depth in the sample that corresponds to the sample’s density, and the stem’s scale is read at the liquid surface.

How is this different from a lactometer or general hydrometer?
A urinometer’s scale is calibrated specifically for the density range of urine and sized for small clinical sample volumes, whereas a lactometer is scaled for milk and general hydrometers cover broader industrial ranges.

Does a urinometer diagnose a medical condition on its own?
No. Specific gravity is one indicator among several used in urinalysis; results are interpreted by clinical staff alongside other tests.

How should I clean a urinometer between uses?
Follow your facility’s biosafety and cleaning protocol for instruments that contact clinical samples, and rinse and disinfect it immediately after each use.

How should I store a urinometer?
Store it upright in a padded holder to protect the fragile weighted bulb at its base from impact damage.

Last Updated: September 2026

Hydrometers, Brass, Baumé

Quick Answer: The Brass Baumé Hydrometer is a heavy-duty, corrosion-resistant hydrometer with a brass casing, built for measuring density on the Baumé scale in demanding industrial settings such as brine, acid, and syrup processing where a fragile all-glass hydrometer would not survive.

Product Description

This hydrometer reads on the Baumé scale, a density scale historically developed for industrial and chemical use and still widely used for brines, acids, syrups, and similar process liquids. Like our glass hydrometers, it works by buoyancy — the instrument floats at a level that corresponds to the liquid’s density — but its brass body gives it far greater physical durability than glass for rough factory-floor handling.

What Makes This Instrument Distinct

The defining feature of this hydrometer is its brass construction rather than glass. In busy chemical processing and pharmaceutical manufacturing environments, an all-glass hydrometer is vulnerable to breakage from routine handling; a corrosion-resistant brass unit is built to withstand that daily wear while still delivering a readable Baumé-scale density result. This makes it a better fit for continuous batch-production quality control than a delicate glass instrument, at the cost of the higher precision that a slim glass hydrometer can offer for laboratory-bench analytical work.

Parameter	Detail
Type	Baumé-scale hydrometer, brass construction
Material	Corrosion-resistant brass
Working Principle	Buoyancy / Archimedes’ principle
Typical Use	Brine, acid, and syrup density checks; chemical processing and pharmaceutical manufacturing QC
Exact Scale Range / Graduations	Confirm with our sales team for the exact Baumé range and graduation interval on this listing

Care & Maintenance

Rinse after each use, especially after contact with acids or brines, to prevent residue buildup and corrosion over time.
Dry thoroughly before storage, particularly if used with corrosive process liquids.
Inspect the scale markings periodically for wear from repeated handling in a factory environment.
Store in a dry location away from strong acids or oxidizing agents that could attack the brass surface over time.
Periodically check accuracy against a known reference standard, particularly after heavy or continuous use.

Why Choose LabEquip

LabEquip supplies hydrometers for both laboratory-bench precision work and heavy industrial process environments. Browse our Measuring Instruments category for related density instruments, see our clinical-use Urinometer, or visit our homepage for our full catalogue.

Frequently Asked Questions

What is the Baumé scale used for?
The Baumé scale is a density scale historically used in industry and chemical processing, commonly applied to liquids such as brines, acids, and syrups.

Why is this hydrometer made of brass instead of glass?
Brass construction makes it far more durable than glass for repeated handling in busy factory or processing-plant environments, where a glass hydrometer would be more prone to breakage.

How does this hydrometer work?
Like other hydrometers, it works on the buoyancy principle — it floats at a depth that corresponds to the density of the liquid being tested, and the Baumé scale is read at the liquid surface.

Is this hydrometer suitable for corrosive liquids like acids and brines?
Its brass construction is corrosion-resistant and suited to these process liquids, though it should still be rinsed and dried promptly after use to maximize its working life.

Is this as precise as a glass laboratory hydrometer?
It is built for durability in industrial process settings rather than fine analytical-bench precision; for laboratory-grade analytical accuracy, a glass hydrometer is typically preferred.

How should I maintain this hydrometer?
Rinse and dry it after each use, especially after contact with acids or brines, and store it away from strong corrosive agents when not in use.

Last Updated: September 2026

Hydrometer,Specific Gravity, Industry

Quick Answer: The Industrial Specific Gravity Hydrometer is a glass hydrometer scaled directly in specific gravity units, built for on-site density checks of process liquids in chemical, petroleum, and manufacturing settings where consistent batch-to-batch quality matters.

Product Description

This hydrometer reads directly in specific gravity (the ratio of a liquid’s density to that of water) rather than an industry-specific scale such as Baumé or Brix. Because specific gravity is a universal reference point, it is widely used across chemical processing, petroleum handling, and general manufacturing to confirm that an incoming or outgoing liquid batch matches its expected density before it moves on to the next stage of a process.

What Makes This Instrument Distinct

Unlike our brass industrial hydrometer, this is a glass instrument, and unlike scale-specific hydrometers such as the Baumé, Brix, or Twaddle variants elsewhere in our range, its scale reads specific gravity directly — a general-purpose reference that does not require converting to another industry convention. This makes it a versatile choice for a manufacturing floor that works with a variety of liquids rather than one specific product category.

Parameter	Detail
Type	Specific-gravity hydrometer, glass, industrial-use
Working Principle	Buoyancy / Archimedes’ principle
Typical Use	Chemical, petroleum, and manufacturing process control and batch verification
Scale	Specific gravity (ratio to water density)
Exact Scale Range / Graduations	Confirm with our sales team for the exact specific-gravity range and graduation interval on this listing

Care & Maintenance

Rinse thoroughly after each test liquid to avoid cross-contamination and residue buildup on the stem.
Handle carefully — as a glass instrument, it can chip or crack from impact against hard surfaces.
Store upright in a padded holder or case when not in use.
Avoid rapid temperature changes between the storage environment and the test liquid, which can stress the glass.
Periodically verify accuracy against a known reference standard as part of routine quality checks.

Why Choose LabEquip

LabEquip supplies a full range of hydrometers, from general-purpose specific-gravity instruments to scale-specific and industrial-duty designs. Browse our Measuring Instruments category, see our heavy-duty Brass Baumé Hydrometer, or visit our homepage for our full catalogue.

Frequently Asked Questions

What does this hydrometer measure?
It measures specific gravity — the ratio of a liquid’s density to the density of water — a general reference used across many industrial sectors.

How does it work?
Like other hydrometers, it works on the buoyancy principle: it floats at a depth that corresponds to the liquid’s density, and the scale is read at the liquid surface.

How is this different from the Brass Baumé Hydrometer?
This is a glass instrument reading specific gravity directly, while the brass version is built for extra durability and reads on the Baumé scale, a different industrial convention.

What industries use this type of hydrometer?
It is commonly used across chemical processing, petroleum handling, and general manufacturing for batch-to-batch density verification.

Is this suitable for laboratory-grade analytical work?
It is designed for practical industrial process checks; for the highest analytical precision, our dedicated analytical-grade hydrometer may be a better fit.

How should I care for this hydrometer?
Rinse it after each use, handle it carefully to avoid chips or cracks, and store it upright in a padded holder.

Last Updated: September 2026

Hydrometer, Twaddell

Quick Answer: The Twaddell Hydrometer reads on the Twaddell (°Tw) scale, a simplified density scale historically developed for liquids heavier than water and still used today in the textile, tanning, and dyeing industries for quick concentration checks.

Product Description

The Twaddell scale is a simplified alternative to specific gravity, designed so that whole-number readings correspond conveniently to common industrial liquid strengths — it reads zero for pure water and increases as liquid density rises above that of water. Like our other hydrometers, this instrument works by buoyancy, floating at a depth that corresponds to the density of the liquid being tested.

What Makes This Instrument Distinct

What sets this hydrometer apart from our specific-gravity and Baumé-scale instruments is its Twaddell scale, which is specifically associated with textile, tanning, and dyeing process liquids in industrial settings. Where a specific-gravity hydrometer requires a small-decimal reading, the Twaddell scale’s whole-number convention is designed to be read and communicated quickly on a factory floor.

Parameter	Detail
Scale	Twaddell (°Tw)
Working Principle	Buoyancy / Archimedes’ principle
Typical Use	Textile, tanning, and dyeing industry liquid concentration checks
Suited For	Liquids heavier than water
Exact Scale Range / Graduations	Confirm with our sales team for the exact Twaddell range and graduation interval on this listing

Care & Maintenance

Rinse thoroughly after each use, particularly after contact with dye or tanning-process liquids, to prevent residue affecting future readings.
Handle carefully — as a glass instrument it can chip or crack from impact against hard surfaces.
Store upright in a padded holder or case when not in use.
Avoid sudden temperature shifts between storage and the process liquid, which can stress the glass.
Periodically verify accuracy against a known reference standard as part of routine quality checks.

Why Choose LabEquip

LabEquip supplies hydrometers across the full range of industrial and analytical scales, including Twaddell, Baumé, and specific-gravity instruments. Browse our Measuring Instruments category, see our general-purpose Industrial Specific Gravity Hydrometer, or visit our homepage for our full catalogue.

Frequently Asked Questions

What is the Twaddell scale?
The Twaddell (°Tw) scale is a simplified density scale for liquids heavier than water, reading zero at the density of pure water and rising in convenient whole numbers as density increases.

What industries use a Twaddell hydrometer?
It is most commonly associated with the textile, tanning, and dyeing industries for quick, practical concentration checks of process liquids.

How does this hydrometer work?
Like other hydrometers, it works on the buoyancy principle — it floats at a depth that corresponds to the liquid’s density, and the Twaddell scale is read at the liquid surface.

How is the Twaddell scale different from specific gravity?
Twaddell is a simplified, whole-number scale specifically calibrated for liquids denser than water, designed for faster factory-floor reading than the small-decimal specific-gravity convention.

Can this hydrometer be used for liquids lighter than water?
No — the Twaddell scale is specifically designed for liquids heavier than water. For general-purpose measurement, our specific-gravity hydrometer may be more suitable.

How should I maintain this hydrometer?
Rinse it after each use, particularly after contact with dye or tanning liquids, handle it carefully, and store it upright in a padded holder.

Last Updated: September 2026