Celltreat's new 500mL Square Bottle is manufactured from medical grade virgin PETG to reduce gas permeability and is great for media prep and storage. The square design saves valuable shelf space, and the flat surface HDPE caps provide the ideal surface for marking. With molded graduations on two sides. Bottles are packaged sterile (gamma irradiated) in individual bags and are RNase, DNase, and Pyrogen free. 24 per case.