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. School biology, college practicals and teaching labs use them daily. Science Lab Supplies, working from Ambala, India, supplies the boxes to schools, colleges, institutes, tender contractors and distributors.
Specifications
The cover glasses are clear, 24 x 24 mm squares packed 150 to a box. They are listed as heat resistant and chemical resistant, so they suit mounts made with common stains and gentle warming, and the square format fits comfortably on a standard glass slide.
| Parameter | Value |
|---|---|
| SKU | SCL-CL-11931 |
| Model no. | SCI/LSS-1688 |
| Also known as | Cover slips |
| Size | 24 x 24 mm |
| Colour | Clear |
| Properties | Heat resistant, chemical resistant |
| Pack | 150 pieces in a box |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for Cover Glasses
Cover glasses finish almost every 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.
- NCERT Class 9 biology: covering onion peel and cheek cell mounts before observation.
- Class 11–12 biology: mounts of stomata, pollen and mitosis in root tips.
- B.Sc. botany and zoology: covering stained sections and whole mounts.
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. Microscope slides, stains and mounting media are not part of this item; plain glass slides are available as a separate listing and can be quoted together with the cover glasses.
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. Tender buyers can start at the lab tender page; other buyers can fill the enquiry cart or write via the contact 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 most temporary mounts are placed.
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?
Science Lab Supplies dispatches them from Ambala, India, by the box, and quotes them singly or with slides and microscopes for a complete 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.
Related Microscopy Consumables
Cover glasses are used with the slides beneath them, a needle to place them, 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 — clear, heat and chemical resistant, 150 in a box.
- Preparatory Needle — metal needle, 14 cm long, for guiding cover slips.
- Set of Microscope Slides — permanent prepared slides with identification labels.
- Digital Microscope — shows the mounted specimen on a computer screen.
Browse the full Chemistry Lab range or all school lab equipment.
Last updated: 25 September 2026
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