Hektoen Enteric Agar (DM422) is recommended for differential and selective isolation of gram-negative enteric microorganisms, especially Salmonella and Shigella species, from a variety of clinical and non-clinical specimen.
| Ingredients | Gms / Liter |
| Proteose peptone | 12.00 |
| Yeast extract | 3.00 |
| Lactose | 12.00 |
| Sucrose | 12.00 |
| Salicin | 2.00 |
| Bile salts mixture | 9.00 |
| Sodium chloride | 5.00 |
| Sodium thiosulphate | 5.00 |
| Ferric ammonium citrate | 1.50 |
| Acid fuchsin | 0.10 |
| Bromothymol blue | 0.065 |
| Agar | 15.00 |
| Final pH: 7.5 ± 0.2 at 25°C | |
| Formula may be adjusted and/or supplemented as required to meet performance specifications | |
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