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. The pack can be quoted by Science Lab Supplies of Ambala, India, for school and college laboratories, tender contractors and distributors.

Specifications

The table records each detail of the 12-piece watch glass pack. In short, every piece 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, and diameter, thickness, glass type and temperature suitability are confirmed on the quotation.

Applications and Experiments for the Watch Glass

A watch glass serves several small jobs 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, or growing crystals from Copper Sulphate Blue Crystal solution.
• Class 11–12 chemistry: weighing solids on a tared watch glass, for example on a 200 g Semi-Analytical Balance with Box of Weighing Stones, before making up standard solutions.
• General practicals: loosely covering a beaker during heating on a water bath, lifting the hot beaker with a stainless steel Beaker Tong SS.
• Demonstrations: displaying crystals, powders or small specimens for a class to examine.

Standard Scope of Supply

One pack contains 12 individual laboratory watch glasses. Beakers, samples, forceps and other accessories are not part of the pack, so any of them can be added as separate lines on the same quotation, along with the diameter and glass type 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. Mention the diameter you prefer when you write via the contact page, keep the packs and matching beakers together in the enquiry cart, or consult the lab tender page ahead of a tender submission.

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 to use at the same time.

Can a watch glass be heated?
That depends on the glass supplied. Avoid direct flame and sudden temperature changes, and ask us to confirm the material and temperature suitability on the quotation before using the pieces for heating.

Who supplies the Watch Glass pack?
Packs of watch glasses are quoted and sent out by Science Lab Supplies from Ambala, India, with size, material and packing set out 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 and Accessories

Watch glasses work with the vessels they cover and the solids they hold. These items from the Lab Glassware and Chemistry Lab ranges support weighing, dissolving, stirring, crystallising and dry storage alongside them, and all of them can share one quotation with the packs.

• Borosilicate Beaker — heavy-walled borosilicate 3.3 vessel for mixing, stirring and heating.
• Weighing Bottle — clear glass with ground-glass stopper, in sizes 60 x 30 and 35 x 25.
• Glass Desiccator — enclosed chamber where a desiccant keeps dried samples dry.
• Glass Stirring Rod — solid clear glass rod, 20 cm long and 4 mm in diameter.
• Crystallizer — 90 mm diameter, 40 mm high clear glass dish with lid.
• Crystallizers — larger 180 mm by 90 mm glass dish with grip.
• Petri Dish (Set) — 100 mm glass dish, 20 mm high, with cap.
• Spoon-Spatula — white porcelain, 115 mm long, chemical resistant.

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

Last updated: 9 October 2026