I am confused about the difference between the three components and which is suitable for cell culture as I bought the first one and it is not written if suitable for cell culture or not
https://www.sigmaaldrich.com/catalog/product/sigma/i0908?lang=en®ion=EG
https://www.sigmaaldrich.com/catalog/product/sigma/91077c?lang=en®ion=EG
https://www.sigmaaldrich.com/catalog/product/sigma/i9278?lang=en®ion=EG