HEPES buffer solution (1M) (50x)
HEPES (hydroxyethyl-piperazineethane-sulfonic acid buffer) is an organic buffer and very stable. In the physiological area HEPES has an excellent buffer capacity in a pH range of 7.2 to 7.6. HEPES is apt for all cell culture systems with a high proliferation and cell density. On HEPES buffered cell culture media, the incubation in a CO2 incubator is not necessary.