EISCO 12PK Watch Glasses, 3" (7.5cm) - Cover Lids for Beakers & Flasks - Evaporation Dish - Polished with Ground Edges

STURDY GLASS || Concave beaker covers (also known as watch glasses) made with quality glass. Each cover features ground edges & polished surfaces for safe handling. The 2.0mm glass thick construction resists shattering. 12 PACK || Set includes twelve covers, each measuring 3"" (7.5cm) in diameter. VARIETY OF USES || Can be used for a variety of laboratory functions - ideal for covering beakers and flasks, but can also be used to hold small samples for observation under a low powered microscope, or evaporating liquids off of samples (i.e. growing seed crystals). GREAT FOR SCIENCE CLASSROOMS || The sturdy construction and makes these covers an excellent choice for science classrooms. MANUFACTURED BY EISCO LABS || Eisco Labs proudly manufactures its own products using state-of-the-art equipment, and following the highest standards of quality control. Each product is carefully designed by a team of laboratory professionals and experienced engineers with quality and durability in mind