cap enable sterilizations of media and reagents. Globe Glass media bottles are available in sizes 50mL to 10000mL. ASTM E438, Type I, Class A, Borosilicate 3.3 Glass GL32 polyethylene (PE) screw cap on size 50mL GL45 polyethylene (PE) screw caps on sizes 100mL to 10,000mL Pouring ring