They can be used for evaporation purposes and also can function as a lid for a beaker. They can serve as lids for flasks and beakers. View. Collaborate with scientists in your field of chemistry and stay current in your area of specialization. It can also be employed for weighing solids and as a lid for flasks and beakers. A watch glass is a circular, slightly convex-concave piece of glass used in chemistry as a surface to evaporate a liquid, to hold solids while being weighed, or as a cover for a beaker. They are also used to hold solids during weighing. Watch glasses are circular, slightly-concave pieces of glass that are used by chemists to evaporate liquids and cover beakers during sample preparation. Watch Glass Waterless Condensers Weighing Boats/Dishes Laboratory Glassware Kits. Manufactured from clear glass sheet (1.8 to 2.0mm thick), these watch glasses are fire ground and have polished edges. Spectrum Chemical has a complete line of laboratory supplies, equipment and safety items. Watch Glass Sizes. Gert Wrigge & Ilja Gerhardt. Grid; List; CG-9800-01 14/20 ORGANIC CHEMISTRY LABSET KITS, 14/20. Sort. Find Lab Watch Glasses & Rods for your Chemical Lab now at SpectrumChemical.com. From $587.00. From $393.65. CG-9800-02 19/22 ORGANIC CHEMISTRY LABSET KITS, 19/22. Virtually immune to chemical attack, only attacked by some fluorine containing compounds at high temperature and… Meaning of watch glass. MW-13 MINUM-WARE® KITS, INTERMEDIATE. ... Used with a ring stand to hold glassware, such as a beaker or a funnel. Isostatically molded beaker covers (watch glass) from virgin polytetrafluoroethylene and machine finished to give a smooth surface for ease of cleaning and to eliminate contamination. Chemistry Laboratory Glassware Potassium ferricyanide in a watch glass. MW-11 MINUM-WARE® KITS, DELUXE. Diameter 60mm (2.4 in) Diameter 70mm (2.8 in) Diameter 80mm (3.2 in) Diameter 100mm (4 in) … Watch glasses are nice for holding small samples for observation under a … A watch glass is just a round piece of glass that is slightly concave/convex (think of a lens). Pyrex has its origins in the early 1910s, when American glass company Corning Glass Works began looking for new products to feature its borosilicate glass… Discover Chemistry. A watch glass is a round, concave glass dish used for evaporation in chemistry. From $604.75. Used to hold solids while they are being weighed or to cover a beaker. Pricing & … When used as a beaker cover, a watch glass prevents the ingress of contaminants while allowing gas exchanges to occur. ... Watch Glass. From $474.35. A watch glass is a circular, slightly concave piece of glass used in chemistry as a surface to evaporate a liquid, or as a cover for a beaker. Watch Glass, 12 Pack. SpectrumChemical.com carries a full line of Lab Glassware. 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