Technical Data
Dextrose Tryptone Agar (Powder)
Microbiological Grade
Storage RT/4C    Shipping RT
Components shown as g/liter
Bromcresol Purple0.04
Detection of thermophilic, aerobic organisms in foods.

Dextrose Tryptone Agar is recommended for the determination of mesophilic and thermophilic bacteria in sweetening agents used in frozen desserts. Bromcresol purple is used as a pH indicator. When isolating thermophilic bacteria use 55C as a plating temperature.

Storage and Stability:
Store powdered media at 4C. Opened bottles should be capped tightly. Protect it from moisture and light. Prepared media should be kept at 4C and used within a short period of time.

Directions: 1. Dissolve 30grams per liter of distilled/ deionized (DDI) water, heating with stirring until completely solubilized.

2. Dispense into appropriate containers, loosen caps and autoclave for 15 minutes at 121C (15psi) Storage:Store powdered media at RT. Opened bottles should be capped tightly and kept in a dark, low humidity environment. Prepared media should be kept at 4C and used within a short period of time.

Appearance: Light greenish-beige, homogeneous, free flowing powder.

Solubility: Purple, clear to turbid.

pH (25C): 6.70.2

Microbiological Analysis: Bacillus coagulans ATCC 7050

Important Note: This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.