Caldo ExcerptISO yeast

Nutritional medium for the growth of a wide spectrum of bacteria, yeasts and molds in water and liquid samples by membrane filtration method.

Illustrated yeast extract broth is a prepared medium, ready for use in membrane filtration analysis for micro-organism count in all types of water, including water for human consumption.

Principle of procedure

Trypton provides nitrogen, vitamins, minerals, and amino acids essential for growth. Yeast extract is a source of vitamins, particularly group B.

ISO 6222 recommends this means for the listing of micro-organisms cultivable in drinking water36 °Cand22 °C.