Serum bottles are specialized containers made from transparent polyester (PET) material with added organic solvents, processed using the injection-stretch-blow molding technique.
Serum bottles are specialized containers made from transparent polyester (PET) material with added organic solvents, processed using the injection-stretch-blow molding technique. Designed for convenient handling, these bottles typically feature a square shape and graduation markings on the body. So, where are these bottles commonly used?
1. Serum Storage
One of the primary applications of serum bottles is for storing serum. Serum is a complex mixture derived from plasma by removing fibrinogen and should be stored at -5°C to -20°C. If stored at 4°C, it should not exceed one month. If a bottle cannot be used up at once, it is recommended to aseptically aliquot the serum into appropriate sterilized containers before refreezing.
2. Culture Media Storage and Preparation
Culture media (Medium) are artificially formulated nutrients used for the growth and maintenance of microorganisms, plant, and animal tissues. These media typically contain water, nitrogen sources, inorganic salts (including trace elements), carbon sources, growth factors (such as vitamins, amino acids, nucleobases, antibiotics, pigments, hormones, and serum), among other components.

3. Buffer Solutions
Buffer solutions resist pH fluctuations when small amounts of acid, base, or water are added. The graduated markings on serum bottles allow for easy monitoring of liquid volumes, while the ergonomic square design enhances grip and handling convenience.
Conclusion
The above three applications highlight the essential role of serum bottles. The PET material used in their production offers excellent low-temperature resistance and chemical stability, making them compatible with most acidic and alkaline solutions. These advantages further expand the scope of serum bottle applications across various scientific and industrial fields.