Grid; List; CG-9800-01 14/20 ORGANIC CHEMISTRY LABSET KITS, 14/20. Pricing & … A watch glass is a round, concave glass dish used for evaporation in chemistry. Watch Glass, 12 Pack. ... Used with a ring stand to hold glassware, such as a beaker or a funnel. Watch glasses are nice for holding small samples for observation under a … ... Watch Glass. SpectrumChemical.com carries a full line of Lab Glassware. Watch Glass Waterless Condensers Weighing Boats/Dishes Laboratory Glassware Kits. 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. Sort. Manufactured from clear glass sheet (1.8 to 2.0mm thick), these watch glasses are fire ground and have polished edges. From $393.65. Spectrum Chemical has a complete line of laboratory supplies, equipment and safety items. They are also used to hold solids during weighing. Virtually immune to chemical attack, only attacked by some fluorine containing compounds at high temperature and… They can be used for evaporation purposes and also can function as a lid for a beaker. Chemistry Laboratory Glassware Potassium ferricyanide in a watch glass. Diameter 60mm (2.4 in) Diameter 70mm (2.8 in) Diameter 80mm (3.2 in) Diameter 100mm (4 in) … 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. ... 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. What does watch glass mean? From $474.35. When used as a beaker cover, a watch glass prevents the ingress of contaminants while allowing gas exchanges to occur. Find Lab Watch Glasses & Rods for your Chemical Lab now at SpectrumChemical.com. Concave shape prevents sliding and return of condensation to the beaker. Used to hold solids while they are being weighed or to cover a beaker. Watch Glass Sizes. Watch glasses are circular, slightly-concave pieces of glass that are used by chemists to evaporate liquids and cover beakers during sample preparation. It can hold a small amount of liquid or solid. From $587.00. 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… They can serve as lids for flasks and beakers. MW-13 MINUM-WARE® KITS, INTERMEDIATE. MW-11 MINUM-WARE® KITS, DELUXE. Meaning of watch glass. Gert Wrigge & Ilja Gerhardt. Collaborate with scientists in your field of chemistry and stay current in your area of specialization. CG-9800-02 19/22 ORGANIC CHEMISTRY LABSET KITS, 19/22. Discover Chemistry. View. 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 concave dishes that have a variety of uses. 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. Exchanges to occur Kits, 14/20 evaporation in chemistry it can also employed... For observation under a … watch glass just a round piece of glass that is slightly concave/convex ( think a. A … watch glass prevents the ingress of contaminants while allowing gas exchanges to occur 14/20 ORGANIC LABSET... Or solid with scientists in your area of specialization or solid have a variety of uses concave prevents! A lid for a beaker used for evaporation in chemistry, a watch glass prevents ingress. 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