Laboratory Protocols & SOPs Library

APT (All Purpose Tween) Agar (Powder)

Directions per Liter:

Dissolve 58.43grams per liter of distilled/deionized water, heating to boiling with stirring until completely solubilized.

Dispense into appropriate containers, loosen caps and autoclave for 15-30 minutes at 121ºC (15 psi).


Component g/liter
Yeast Extract . 7.5
Dextrose 10
Casein Digest Peptone. 10
Sodium Citrate 5
Potassium Phosphate 5
Sodium Chloride 5
Tween 80 0.2
Sodium Carbonate 1.25
Magnesium Sulfate 0.8
Magnesium Chloride 0.14
Ferrous Sulfate 0.04
Agar 13.5
Total: 58.43g/Liter


Storage and Stability:

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 4°C and used within a short period of time.

Categories: Laboratory Protocols & SOPs Library

Da — when not otherwise indicated, molecular weight units are daltons.   Mw — weight-average molecular weight.   Mn — number-average molecular weight.

Products are supplied for research and development use only. Not for use in humans, animals, diagnosis, or therapy.

Cite this article

Aladdin Scientific. "APT (All Purpose Tween) Agar (Powder)" Aladdin Knowledge Base, updated 9 jun 2025. https://www.aladdinsci.com/eu_es/faqs/apt-all-purpose-tween-agar-powder-en.html
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