MES, Sodium Salt (2-(N-Morpholino) ethanesulfonic acid sodium salt)

MES Sodium Salt is a biological buffer (zwitterionic) designed by Good et al., and typically referred to as Good's buffer. It is useful in cell culture media formulations. Selection of biological buffer systems should include the following criteria: exclusion by biological membranes, low absorption between 240-700nm, chemically stable, and stable to temperature and concentration changes. Appearance: White crystalline powder, Purity (Titration): >99.5%, Solubility: Clear and colorless (1M Aqueous solution), Heavy Metals: <0.005%, UV absorbance 0.5M aq. at 260nm): <0.050 , 0.5 M aq. at 280nm): <0.030, Water (Karl Fisher): <1%, pH: 8.90-10.10 (1% Aqueous solution), Storage Temp: Store at RT