Yes, the protein content in this product is high enough so filtering through a low protein binding filter as a 50X or 1X in solution should not be a problem.
Can Neurobasal Medium alone or Neurobasal Medium supplemented with B-27 supplement be frozen to extend product shelf life?
No, it is not recommended to freeze media due to the potential of precipitates forming upon thaw. Inorganic salts and amino acids in the formulation may come out of solution when exposed to temperature fluctuations. These precipitates will not go back into solution easily once formed.
Is precipitate in Human Keratinocyte Growth Supplement (Cat. No. S0015, S001K) normal?
After long-term storage at -20 degrees C, Human Keratinocyte Growth Supplement (HKGS) (Cat. Nos. S0015, S001K) may contain a small amount of precipitate, which is normal. This precipitate is formed from cold insoluble material in the BPE component of the HKGS and will not affect the performance of the product. A similar precipitate may be seen in the BPE component of the HKGS Kit.
Can I thaw B-27 Plus Supplement (Cat. No. A3582801) in a 37 degrees C water bath or incubator?
We do not recommend thawing B-27 Supplement (Cat. No. A3582801) in a water bath or incubator. We recommend thawing the B-27 Supplement at 4 degrees C overnight.
Note: Remaining B-27 Plus Supplement (50X) may be aliquoted into working volumes and stored at -20 to -5 degrees C. Do not freeze-thaw B-27 Plus Supplement (50X) more than twice. Once thawed do not leave thawed supplement at 4 degrees C for more than two weeks.
Which media system should I use for primary culture of P0- or P1-derived mixed hippocampal cells?
We recommend using Neurobasal Plus Medium with B-27 Plus Supplement for long-term culture of mixed hippocampal cells. For short-term culture of a pure population of hippocampal neurons, we would recommend using Neurobasal-A Medium with B-27 Supplement.