Product features PET square bottle, also known as square culture medium bottle Bottle body material: PET material, bottle cap material: HDPE The bottle body is as transparent as glass, with precise and clear markings; Lightweight, crack resistant, impact resistant, and puncture resistant“ The bottle body is square, making it easy to hold, store, and transport; The specifications include 30ml, 60ml, 125ml, 250ml, 500ml, and 1000ml; The chamfered design of the bottle cap ensures no leakage through strict leakage testing; No DNA/RNA enzymes, no heat source, no endotoxins, compliant with USP Class VI standards; Usage temperature: -70 ℃ -120 ℃, can withstand 155 ℃ for short-term use (not recommended)“