When used as a beaker cover, a watch glass prevents the ingress of contaminants while allowing gas exchanges to occur. Discover Chemistry. Manufactured from clear glass sheet (1.8 to 2.0mm thick), these watch glasses are fire ground and have polished edges. Watch glasses are concave dishes that have a variety of uses. 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. Diameter 60mm (2.4 in) Diameter 70mm (2.8 in) Diameter 80mm (3.2 in) Diameter 100mm (4 in) … Watch Glass Sizes. Spectrum Chemical has a complete line of laboratory supplies, equipment and safety items. Sort. It can also be employed for weighing solids and as a lid for flasks and beakers. Used to hold solids while they are being weighed or to cover a beaker. From $393.65. From $474.35. Watch glasses are circular, slightly-concave pieces of glass that are used by chemists to evaporate liquids and cover beakers during sample preparation. 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… 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. MW-13 MINUM-WARE® KITS, INTERMEDIATE. 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. MW-11 MINUM-WARE® KITS, DELUXE. From $604.75. Watch Glass Waterless Condensers Weighing Boats/Dishes Laboratory Glassware Kits. 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. A watch glass is a round, concave glass dish used for evaporation in chemistry. Concave shape prevents sliding and return of condensation to the beaker. Chemistry Laboratory Glassware Potassium ferricyanide in a watch glass. Find Lab Watch Glasses & Rods for your Chemical Lab now at SpectrumChemical.com. Meaning of watch glass. SpectrumChemical.com carries a full line of Lab Glassware. Gert Wrigge & Ilja Gerhardt. What does watch glass mean? Grid; List; CG-9800-01 14/20 ORGANIC CHEMISTRY LABSET KITS, 14/20. ... 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. Collaborate with scientists in your field of chemistry and stay current in your area of specialization. Pricing & … ... Watch Glass. Watch glasses are nice for holding small samples for observation under a … They can serve as lids for flasks and beakers. Watch Glass, 12 Pack. It can hold a small amount of liquid or solid. From $587.00. ... Used with a ring stand to hold glassware, such as a beaker or a funnel. 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. CG-9800-02 19/22 ORGANIC CHEMISTRY LABSET KITS, 19/22. They are also used to hold solids during weighing. A watch glass is just a round piece of glass that is slightly concave/convex (think of a lens).
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