Vacuum-gas plasma tissue culture-treatment provides consistent cell attachment, spreading and growth. Sterilized by gamma radiation. Non-pyrogenic. Volumetric graduations and writing patch. Blue vented screw cap incorporate a 0.2 micrometer hydrophobic membrane. Phenolic caps contain non-toxic liners. Manufactured under a registered ISO 9001 quality system. Growth area and volume are nominal. Tissue culture-friendly packaging. Convenient reseal tab on neck. Innovative bag materials that will not scuff or scratch the flask's optical surface. Double-wall bags provide increased sterility performance. Medical-style, peel-open bags guarantee that flask sterility is maintained. Recyclable bag material (LDPE). Knife not required for case opening. DNR latex free. Tissue-culture treated growth surface. Straight neck shape. Polystyrene flask, polyethylene cap, hydrophobic vent material. T-175 size, sterile. 175 Sq. cm growth area. 750mL capacity.