DTA, 2x Concentrated, 200 ml in Alpha bottle 300 ml, white screw cap.
Also known as: Dextrose tryptone agar, 2x concentrated
Intended use: A concentrated medium for the enumeration of thermophilic spore bearers in foods, designed to detect the thermophilic bacteria causing 'flat sour' spoilage of canned foods.
Typical formula (g/l)*: Tryptone 20.0; Glucose 10.0; Bromocresol purple 0.08; Agar 24.0
Formula conform: NEN 6809
Interpretation: Thermophilic bacteria causing 'flat sour' spoilage produce yellow colonies with a yellow halo. Non acid producing colonies are grey to colourless.
* Adjusted and/or supplemented as required to meet performance criteria.