Bel-Art™ SP Scienceware™ Evaporating Dish
Manufactured from polypropylene. Bel Art™ SP Scienceware™ Evaporating Dish is a smooth dish with easy pour spout for use in a variety of laboratory tasks. 6/Pack
Glassy Carbon Evaporating Dish, Alfa Aesar™
Glassy carbon offers high purity, corrosion resistance, thermal stability and a structure impermeable to both gases and liquids.
Eisco™ Flat Bottom Glass Crystallizing Dishes with Spout
Flat bottom glass crystallizing dishes with spouts for easy, mess free pouring. Ideal for storage and crystallization. Reusable and autoclavable.
GSC Go Science Crazy Porcelain Evaporating Dishes
Designed to withstand high temperatures with proper use. GSC International Porcelain Evaporating Dishes can withstand temperatures of up to 1050°C on their glazed portions, and up to 1350°C on their unglazed bottom surfaces.
Eisco™ Flat Bottom Glass Crystalizing Dishes
Eisco™ Flat Bottom Glass Crystalizing Dishes have no spout and are ideal for storage and crystallization.
Eisco™ Porcelain Evaporating Basins with Spouts
Glazed porcelain evaporating basins include spouts for easy, mess free pouring. Designed to withstand high temperatures during drying applications including use in an oven or microwave to produce concentrated solutions or a precipitate by evaporating excess solvent.
Eisco™ Round Glass Evaporating Basins with Spout
Round glass evaporating basins with spouts for easy mess free pouring. Designed for drying and evaporation applications including use in an oven or microwave to produce concentrated solutions or a precipitate by evaporating excess solvent. Reusable and autoclavable.
Evaporating dishes are pieces of heat-tolerant laboratory glassware, which are used to hold substances or liquids that are being melted or evaporated. They are typically made of borosilicate glass (as in Pyrex evaporating dishes) or porcelain (also called “china dishes”). Porcelain evaporating dishes can withstand higher temperatures than glass but can also be delicate. Evaporating dishes made of platinum or another refractory metal may be used for very high-temperature work.
These shallow dishes are sometimes called "watch glasses" because they resemble the clear covers of watch faces. The shallow shape offers a larger evaporation surface and eliminates the possibility of condensation that can occur with other lab vessels. Stirring or swirling could cause spillage, so evaporation requires a static liquid.
Evaporating dishes may be weighed before use. The weight can then be subtracted from the final weight to provide the actual weight of the evaporated substance.
Use caution when evaporating substances that can produce noxious gases. These procedures should be performed under a hood or with other appropriate ventilation. Evaporation dish capacities are usually less that 10mL, but larger, more hemispherical dishes can be used to accommodate larger liquid volumes.
Evaporating dish use most often includes quantitative measures. Gas burner heating is preferred, and never place evaporating dishes on a hot plate. Always handle heated dishes carefully to avoid getting burned, because they may not appear to be hot. Allow to cool first, and use tongs, gripping devices (silicone rubber heat protectors), or heat-resistant gloves for safety.