Alkali Scientific(B3000-SP) Hybex reusable glass bottles are manufactured from high quality borosilicate 3 3 glass With their superior chemical resistance these bottles are ideal for storage of reagents culture media biological fluids and a variety of other aqueous and nonaqueous solutions A low coefficient of thermal expansion (3 3) provides temperature resistance that is far superior to that of standard lab glass (or soda lime glass) Hybex glass can withstand temperatures from -70 to 500C permitting repeated use in freezers microwaves autoclaves and dry heat sterilization chambers All Hybex media bottles include a drip-free sealing ring as well as a standard blue polypropylene (GL45) sealing cap Bottles are also available with green purple white and yellow caps or in an assortment pack containing two of each color Borosilicate 3 3 hybex glass Autoclavable caps (GL45) and drip rings Permanent enamelgraduation markings Area for bottle marking/identification Autoclavable reuseabl