CELLTREAT Scientific Products 182cm2 Deep Volume Tissue Culture Flask. Tissue Culture Treated Flasks have uniform hydrophilic surface ideal for consistent cell attachment. Zip-closure bag is a practical alternative to folding and taping open bags. Large opening, canted neck design and moderate angles allow easy access to entire flask surface; ideal for cell scrapers. Stable base enables filling with flask standing upright. Flask is printed with lot number and expiration date for easy identification and tracking. Vent caps feature 0.22¿m hydrophobic membrane. Deep Volume Flask has extra depth, allowing more media volume; you can leave cell cultures to grow for longer without drying out or depleting all nutrients (maintain your cell cultures over the weekend). Flask manufactured from polystyrene with polyethylene (HDPE) cap. RNase/DNase free and non-pyrogenic. Every case is printed with the lot number for quality traceability. Packaged sterile, 5/re-sealable bag, 40/case.