The pH specification range for this product is 5.4 - 6.0, however this is not suitable as a final pH for the culture of cells. This formulation requires the addition of sodium bicarbonate as a buffering agent. The final pH will be adjusted using an acid or base to reach the desired final pH, typically 7.2 - 7.4. See the links below to review a sample Certificate of Analysis as well as the product datasheet which includes preparation instructions.
Product datasheet
https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/124/814/f6636pis.pdf
Sample Certificate of Analysis
https://www.sigmaaldrich.com/certificates/sapfs/PROD/sap/certificate_pdfs/COFA/Q14/F6636-10X1LSLCP6322.pdf

