Cover Glasses
Product Code : SCL-CL-11931
Cover Glasses (SKU SCL-CL-11931), also called cover slips, are thin, transparent squares placed over a specimen mounted on a microscope slide. They flatten a wet mount, keep the sample from drying out and protect the objective lens from stains and liquids. Each piece measures 24 x 24 mm, and they suit school biology, college practicals and teaching labs. Boxes are packed for dispatch by Science Lab Supplies in Ambala, India, serving schools, colleges, institutes, tender contractors and distributors.
Specifications
Size, finish and pack count of the 24 x 24 mm cover glasses are set out in the table below. In short, they are clear, thin squares packed 150 to a box, heat resistant and chemical resistant, so they suit mounts made with common stains and gentle warming on a standard glass slide.
| Specification | Value |
|---|---|
| SKU | SCL-CL-11931 |
| Also known as | Cover slips |
| Form | Thin, transparent sheet |
| Size | 24 x 24 mm |
| Colour | Clear |
| Heat resistance | Heat resistant |
| Chemical resistance | Chemical resistant |
| Pack quantity | 150 pieces in a box |
| Function | Placed on top of specimens mounted on a microscope slide |
| Application | Laboratory microscopy |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for Cover Glasses
Cover glasses finish a temporary mount. They spread the mounting liquid into a thin, even layer so the specimen lies in one focal plane, and they stop the objective touching the sample, which matters most at high power with the 40x objective of a student microscope.
- NCERT Class 9 biology: covering onion peel and cheek cell mounts, stained with dyes from Stains and Reagents for Microscopy, before observation.
- Class 11–12 biology: mounts of stomata, pollen and mitosis in root tips, with the liquid added from a glass Dropper.
- B.Sc. botany and zoology: covering stained sections and whole mounts, lifted into place with stainless steel Forceps.
Lower each cover glass at an angle from one edge, using a needle, so the liquid spreads out and air bubbles are pushed aside. The squares are thin and break easily, so store the box flat and dispose of broken pieces safely.
Standard Scope of Supply
Each box holds 150 clear cover glasses of 24 x 24 mm. Plain glass microscope slides, stains and mounting media can be added to the quotation on request, so the slides and cover glasses for a practical arrive together on one order.
Packing, MOQ and Lead Time
Whether you need one box or a year's stock for several biology labs, the quotation lists packing, delivery time and price for that quantity. Slides, needles and other school chemistry lab equipment in India from our range can be placed on the same quotation.
Science Lab Supplies is a registered exporter holding an Importer-Exporter Code, and it can ship to buyers in Saudi Arabia, Oman, the Philippines, Nepal, Bangladesh and Zambia. Put the box count beside slides in the enquiry cart, ask any question on the contact page, or route a formal bid through the lab tender page.
Frequently Asked Questions
What size are these cover glasses?
They are 24 x 24 mm squares. That size covers the central area of a standard microscope slide, where temporary mounts are placed for viewing under the objective lens.
Why use a cover glass at all?
It flattens the specimen into an even layer, slows drying, and protects the objective lens from liquids and stains, which gives a sharper image and safer use of the microscope.
Which company supplies the Cover Glasses?
They reach buyers through Science Lab Supplies, which quotes them by the box from Ambala, India, either as a single line or together with slides, stains and microscopes for a complete microscopy order.
How many pieces come in a box?
There are 150 cover glasses in each box, packed so the thin squares stay flat and separate until use, and the box count can be scaled to the number of practical groups.
Related Microscopy Consumables
Cover glasses are used with slides beneath them, a needle to place them, staining and drying equipment, and a microscope to view the finished mount. The items below build a complete slide-making set for a biology bench and can go on one quotation with the cover glasses.
- Glass Microscope Slides — flat, clear glass slides, 150 in a box.
- Glass Cover Slips — smaller 22 x 22 mm squares, about 100 pieces (10 g) per box.
- Cover Glass Slide — colourless glass covers 0.17 mm thick, 22 x 22 mm, box of 100.
- Preparatory Needle — straight 14 cm metal dissecting needle for slide preparation.
- Coplin Jar Staining — glass jar for staining 10 slides, with a cover that withstands stains and solvents.
- Slide Drying Rack — self-supporting rack with 12 numbered positions for coloured slides.
- Set of Microscope Slides — prepared slides with identification labels.
- Digital Microscope — shows the mounted specimen through the eyepiece or on a computer screen.
Browse the full Chemistry Lab range, the Clinical Laboratory range for staining jars and slide racks, or all school lab equipment.
Last updated: 9 October 2026
