NEST Cell Culture Flasks are available with growth areas ranging from 25 cm² to 225 cm², in either tissue culture-treated or non-treated versions, and with vent caps or plug seals to meet various requirements. Made from high-clarity, 100% virgin polystyrene, they are E-beam sterilized to SAL 10⁻⁶, non-pyrogenic, DNase/RNase free, feature frosted writing with clear graduations, notched bottoms for slip-free stacking, and clearly marked lot numbers for batch traceability, all packaged in sterile, zip-sealable bags. The T225 3- and 5-layer Cell Culture Flasks provide growth areas of 520 cm² and 870 cm² respectively, maintaining the same high standards of clarity, sterility, and reliability, and are individually packaged in sterile bags.