Polystyrene Roller Bottles

CellMaster™ polystyrene roller bottles are being offered with an added filter cap. The cap incorporates a filter membrane with an "easy-open" design. The hydrophobic membrane has an increased water entrance pressure and a well-defined pore size. It is an efficient barrier, trapping contaminants on the surface instead of within. The membrane has a high airflow rate and is resistant to gamma irradiation. The cap twists on and off with one turn. The bottles are available in 850 and 1700 cm² volumes, with graduations to 2000 ml, the lot number and the "best before" date printed on them. Each bottle is tissue culture treated for improved cell attachment and guaranteed sterile and non-pyrogenic.