Safety Pack Erlenmeyer Flask Set, made of high quality, heavy duty, Material: borosilicate 3.3 glass, 3 narrow neck flasks 100, 250 and 500ml cap, Flasks feature white, printed grad and beaded rims, Uniform, thick walls provide excellent strength against breakage
Safety Pack Volumetric Flask Set, Class A, made of high quality, heavy duty, ASTM, Material: borosilicate 3.3 glass, Includes 10, 25 and 50ml cap, features a single white graduation mark and is fitted with a glass stopper, thick walls provide excellent strength