It may be caused by contamination. Test method: use a pipette to absorb the appropriate amount of complete medium, add it to the corresponding culture vessel, and then observe if any turbidity occurred after 37 ℃ incubation for about 3 days.
Another reason may be air leakage from the cap. The air leakage does not necessarily lead to contamination. If no liquid leakage, it can still work. In this case, slightly loosen the cap and put it in the CO2 incubator. Generally, the color will restore.
If the color has already changed when it’s just received and unopened, please contact us for a replacement.
It's quite necessary to store the complete medium shading from light, although weak scattered light does not affect the product much.
The complete medium is rich in nutrients. It may be serum precipitation or other protein precipitation.
It may be caused by contamination. Test method: use a pipette to absorb the appropriate amount of complete medium, and add it to the corresponding culture vessel. Observe if any turbidity occurred after 37 ℃ incubation for about 3 days.
If the case of contamination is excluded, remove the precipitation by centrifugation, add a small number of cells into the complete medium, subculture for 2~3 passages, and then observe whether there is a change in the state of the cells.
