Question 1: The appearance color of the serum.
The appearance color of each batch of serum may vary, and their color may be golden yellow, red, amber brown, or between the three. The hemoglobin content of each batch of serum meets the quality testing standards.
Question 2: The best way to preserve serum.
We recommend storing the serum at -5 ℃ to -20 ℃. If stored at 4 ℃, do not exceed one month. If you are unable to use up one bottle at a time, it is recommended that you aseptically pack the serum into an appropriate sterilization container and store it back in the freezer..
Question 3: How to properly thaw serum without compromising product quality.
We suggest that you remove the serum from the freezer and place it in a 2-8 ℃ freezer overnight for melting, then allow it to fully melt at room temperature. It must be noted that the melting process must be shaken regularly and evenly.
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