Hektoen Enteric Agar
 
Catalog Number: AS-1248
 
Salmonella and Shigella species can be isolated using Hektoen Enteric (HE) agar, a selective and differential medium. For nutritional support, it contains yeast extract and peptone; for carbohydrates, lactose, sucrose, and salicin are used. Bile salts distinguish lactose fermenters from Gram-positive bacteria, as do acid fuchsin and bromothymol blue markers. Hydrogen sulfide generation is detected using ferric ammonium citrate and sodium thiosulfate. Addition of novobiocin may improve selectivity. Enteric pathogens are isolated and differentiated from clinical and dietary samples using hektoen enteric agar.
 
Storage
Keep the container at 15-30 °C and prepared medium at 2-8 °C.