Cold storage refrigerators (8 °C, −20 °C, −80 °C) They are used to store samples, reagents, and enzymes at required temperatures to preserve stability and prevent degradation.
8 °C: Storage of buffers, reagents, and short-term samples
−20 °C: Storage of proteins, chemicals, and medium-term samples
−80 °C: Long-term storage of sensitive biological samples and specimens