Coplin Jar, Euro Design

Quick answer: A Coplin jar (Euro design) is a slotted laboratory jar used to hold several microscope slides upright for staining, fixing or washing during histology, cytology and microbiology work.

The internal grooves of the Euro-design pattern keep each slide separated and vertical, so staining and rinsing solutions reach both faces evenly without slides touching or sticking together. This makes the jar a standard piece of bench equipment wherever multiple slides need to go through the same reagent step at once, such as haematoxylin and eosin staining, Gram staining or general fixation and dehydration steps in tissue processing.

A close-fitting lid is normally used with the jar to reduce evaporation of the staining solution and limit exposure to reagent fumes on the open bench. The jar sits flat and stable on standard laboratory benches and staining racks alongside other histology glassware.

Technical Specifications

Parameter	Detail
Design	Euro pattern, internally grooved slide slots
Slide orientation	Vertical
Typical use	Histology, cytology and microbiology slide staining
Lid	Designed for use with a close-fitting lid to limit evaporation
Slide capacity	Supplied to hold multiple standard microscope slides — confirm the exact capacity required at enquiry

Applications

Haematoxylin and eosin (H&E) and other routine histology staining
Gram staining and other microbiology smear procedures
Fixation, dehydration and clearing steps in tissue processing
Batch washing and rinsing of multiple slides between reagent steps

Care & Handling

Hand-wash with a mild laboratory detergent and rinse thoroughly between different staining reagents
Check the internal grooves for chips before loading slides, as damaged grooves can scratch slide surfaces
Keep the lid closed between staining steps to reduce reagent evaporation and fume exposure
Handle with care as glass Coplin jars are breakable if dropped or knocked
Store dry, upright and away from bench edges when not in use

Why Choose LabEquip

LabEquip supplies laboratory glassware for histology, microbiology and chemistry workflows to schools, colleges and research laboratories across India. Browse our full lab glassware range or explore related chemistry lab equipment to complete your bench setup. For bulk or institutional requirements, contact us and our team will help confirm the right jar and quantity for your workflow.

Frequently Asked Questions

What is a Coplin jar used for?

It is used to hold multiple microscope slides upright while they are stained, fixed, washed or rinsed as part of histology, cytology or microbiology procedures.

How many slides does a Euro-design Coplin jar hold?

Coplin jars are supplied with internal grooves sized to hold multiple standard microscope slides. Confirm the exact slide capacity you need when placing your enquiry.

Does the jar come with a lid?

Coplin jars of this design are intended for use with a close-fitting lid to help limit evaporation and reagent fume exposure. Confirm the exact configuration supplied with your enquiry.

Can the jar be used with staining reagents such as haematoxylin and eosin?

Yes, Coplin jars are designed for routine histology staining reagents. Always check the chemical compatibility of any specific reagent before use.

Is the jar suitable for microbiology smear staining?

Yes, the same slotted design is widely used for Gram staining and other microbiology smear procedures that need multiple slides processed together.

Does LabEquip supply Coplin jars for bulk or institutional orders?

Yes. LabEquip supplies Coplin jars to schools, colleges and laboratories across India, including bulk and institutional orders. Contact us for a quotation.

Last Updated: September 2026