Alkali Scientific non treated TC flasks are constructed from optically clear virgin polystyrene and features a canted neck Ideal for growing cells in suspension Packaged in sterile resealable Zip bags High clarity 100% virgin polystyrene Frosted writing and clear graduations Stackable Sterilized by E-Beam Vent caps (with breathable 0 22um membrane) Clear lot number for batch traceability Non-Pyrogenic DNase/RNase free Use Alkali Scientific canted neck TC Flasks Non-Treated for a variety of cell culture applications including suspension cell growth These sterile flasks feature a clear untreated hydrophobic polystyrene surface and are ready for use in an aseptic environment These flasks are RNase/DNase free and non-pyrogenic and the included 0 22um vented cap is designed to prevent contamination while allowing airflow inside or outside your incubator Stackable for easy handling and storage Alkali Scientific Flat-Bottom Flasks Non-Treated are available in t25 t75 t175 and