Watch Glass

Product Code : SCL-LG-11975

Watch Glass (SKU SCL-LG-11975) is supplied as a pack of 12 shallow, circular, concave laboratory dishes for covering beakers, holding small samples and letting small volumes evaporate. Twelve pieces suit a class working in groups or several laboratory workstations at once, from school chemistry to college and research benches. Science Lab Supplies, based in Ambala, India, offers the pack to schools, colleges, training institutes, tender contractors and distributors.

Specifications

Each watch glass is a shallow concave disc that keeps a small quantity of powder, crystals or liquid in view and within reach. It is not a calibrated vessel. The listing does not state diameter, thickness, glass type or temperature rating, so those details are confirmed on the quotation.

Applications and Experiments for the Watch Glass

A watch glass is one of the most-used small items on a chemistry bench. It covers a beaker loosely while vapour escapes around the edge, holds solids during weighing or observation, and lets a few drops of solution evaporate so that crystals can be seen forming.

• NCERT Class 6–7 science: evaporating salt solution to recover the solid and observe crystals.
• Class 11–12 chemistry: weighing solids on a tared watch glass before making up standard solutions.
• General practicals: loosely covering a beaker during heating on a water bath or while stirring.
• Demonstrations: displaying crystals, powders or small specimens for a class to examine.

Standard Scope of Supply

One pack contains 12 individual laboratory watch glasses. The listing does not include beakers, samples, forceps or other accessories, so any of these can be added as separate lines on the same quotation along with the diameter you need.

Packing, MOQ and Lead Time

Order one pack for a single bench or several packs for a whole laboratory; every quotation spells out packing, delivery time and price for the number of packs requested. Beakers, weighing bottles and stirring rods can be included, keeping school chemistry lab equipment in India on one order.

Science Lab Supplies is able to ship to buyers in Saudi Arabia, Oman, the Philippines, Nepal, Bangladesh and Zambia as a registered exporter with an Importer-Exporter Code. Reach the team through the contact page, gather items in the enquiry cart, or check the lab tender page before a tender.

Frequently Asked Questions

How many watch glasses are in one pack?
Each pack holds 12 individual watch glasses, enough for a class working in small groups or for several laboratory workstations.

Can a watch glass be heated?
That depends on the glass supplied, which the listing does not state. Avoid direct flame and sudden temperature changes, and ask us to confirm the material and temperature suitability before heating.

Who supplies the Watch Glass pack?
Science Lab Supplies is the supplier, sending packs from Ambala, India and confirming size, material and packing on each quotation for schools, colleges and contractors.

Does a watch glass seal a beaker?
No. It rests loosely on the rim as a cover, keeping dust and splashes out while vapour escapes around the edge, so it is never airtight or pressure-tight.

Related Bench Glassware

Watch glasses are used with the vessels they cover and the solids they hold. These four items from the lab glassware range support weighing, dissolving, stirring and dry storage alongside them, and all can share one quotation.

• Borosilicate Beaker — the vessel a watch glass most often covers.
• Weighing Bottle — closed weighing for moisture-sensitive solids.
• Glass Desiccator — dry storage for samples on watch glasses.
• Glass Stirring Rod — stirring and transferring small samples.

Browse the full Lab Glassware range or all school lab equipment.

Last updated: 25 September 2026