Description These are some watch glasses for laboratory use, can be used to do some evaporation of liquid work, also can be glass breaker cover. Made of glass materials, safe and durable, they are good tools for laboratory teaching, school, chemical experiment supply. Simple structure with stable working performance, easy to use, let the fluid surface area increased, accelerate evaporation. Features - Color:Transparent. - Material: glass. - Size:9.00X9.00X0.10cm/ 3.54X3.54X0.04inch. - Transparent, round and flat shape, sturdy, not easy to deform for long time to use. - Good for science experiment enthusiasts, testing institution, laboratory, chemistry classroom and more uses. - Made of glass materials, safe and durable, you can use with peace of mind. - It can be evaporating dish, also beaker cover, and also, the watch glass can be used as load carrier. - Exquisite craftsmanship ensure its durability and practicality, offering you satisfying using experience.Packing list: 10 x watch glasses