PET serum bottles are principally used for storage and transport of culture media, serum, buffer solutions and reagents; they are resistant to cracking and puncture, and are as transparent as glass, thus being suitable for air transport and flat storage. PET serum bottles provide a cell culture environment similar to that found in human body, facilitating the smooth transition from research to production in large-scale cell culture applications; hence, they are perfect for storage of biological and chemical reagents, as well as preservation of the integrity and purity of their components.