watch glass chemistry

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