Cell culture serum bottles are square pet petg media bottles used to store and transport cell culture serum, which is an essential supplement for mammalian cell culture media. The serum provides cells with nutrients, growth factors, attachment and spreading factors, and protease inhibitors that are important for cell growth and viability. Cell Culture Media Bottle Features: Bottle material:  Square media bottle PET PETG materialbottle cap material: HDPE High-strength white nylon cap with precise graduations on the bottle body. The bottle body is square, convenient to hold, convenient to store and transport. The specifications are 125ml, 250ml, 500ml, 1000ml. Strict leak test to ensure no leakage. No DNA/RNase, no heat source, no endotoxin. Can withstand low temperature -135 ℃ frozen storage. Sterilized by gamma radiation.