Constructed of glass-clear styrene for complete visibility, these vials are excellent for storing dry materials, powders, tablets, and other samples.Heavy, rigid-wall construction ensures long serviceCan be used at temperatures from -20 to 70 °C (-4 to 158 °F)Supplied with tight-fitting, polyethylene snap-on capsAvailable in nine (9) sizes from 3 dram (11 mL) through 40 dram (148 mL)