Hydroxyethylpiperazine Ethane Sulfonic Acid

**Semantic type:** Organic Chemical

**Definition:** A zwitterionic biological buffer used in cell culture to maintain physiological pH. It is less affected by changes in carbon dioxide concentrations than bicarbonate buffers.

**Synonyms:** - HEPES - HEPES - HEPES Solution - HYDROXYETHYLPIPERAZINE ETHANE SULFONIC ACID - Hydroxyethyl Piperazine Ethanesulfonic Acid Solution