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