E&O supply freshly harvested aseptically collected Donor Horse Blood and Sheep Blood. These blood products are oxygenated and supplied in both Bottles and Bags for convenient asceptical addition to culture media. Plasma products can be fractionated after the addition of a range of anticoagulants: Citrate, Alsevers, Sodium Oxolate, Heparin and EDTA.

All donor animal blood products are harvested from Stress Free Animals with guaranteed PCV’s and free from any microbiological inhibitors. The most common use is for the manufacture of Blood Agar Plates. Dehydrated culture media (Columbia Agar) is added to deionised water and then sterilized at 121°C. The molten agar is then cooled to 42°C, fresh Horse Blood or Sheep Blood is then added at a 5% or 7% concentration before being poured into petridishes.

Môi trường nuôi cấy vi sinh Hektoen Enteric Agar

Hektoen enteric agar was developed by King and Metzger as a differential selective medium for the isolation of Shigella spp. and Salmonella spp. species from enteric pathological samples.

The meat peptone and yeast extract provide the required nitrogen, carbon and vitamins. Lactose, sucrose and salicin are fermentable carbohydrates. Bromothymol blue is added as a pH indicator

in order to identify carbohydrate fermenting organisms. The combination of ferric ammonium citrate and sodium thiosulfate allows the production of hydrogen sulphide. Hydrogen sulphide positive colonies produce black centred colonies. Sodium chloride maintains the osmotic balance. The bile salts and acid fuchsin inhibit Gram-positive organisms.

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