PET and PETG bottles are widely used in the storage and transportation of serum, culture media, enzymes and other products. Compared with PET materials, bottles made of PETG materials have more advantages.
✦ Chemical structure:
PET chemical name: polyethylene terephthalate;
PETG chemical name: polyethylene terephthalate copolymer;
PETG is an advanced chemical synthesis based on PET - PETG is a type of PET Copolymer, an ingredient called cyclohexanedimethanol (CHDM) is added during the production process. This modification gives PETG different performance characteristics.
✦ In terms of physical properties:
Due to different chemical structures, the physical properties are also different. Compared with PET materials, PETG has higher transparency, better toughness and more impact resistance and chemical resistance. It is also lower than PET in terms of low temperature resistance. Therefore, PETG square bottles can be frozen and thawed repeatedly as low as -70 degrees without affecting performance.
✦ In terms of gas barrier properties:
PETG shows excellent performance in terms of gas barrier properties, especially its barrier properties against nitrogen, oxygen and carbon dioxide. The data are shown in the table below (1). The high barrier properties make chemicals sensitive to oxygen and carbon dioxide The storage and transportation of reagents and biological reagents is extremely important to prevent deterioration and failure of reagents.
As a packaging container, PETG requires long-term storage and has strict requirements for reagents and products themselves. Therefore, it is very important to choose the right products and manufacturers;
Shandong Labio Biological Technology Co., Ltd. has launched a 10-1000ML series of PETG serum and culture media bottles that meet pharmacopoeia standards.
Post time: Dec-14-2023