Laboratory Protocols & SOPs Library

Antibiotic Medium #9 (Powder)

Directions per Liter:

Dissolve 50 grams per liter of ddH2O. Heat with stirring until dissolved. Dispense into appropriate containers, loosen caps and autoclave (15psi) for 15 minutes at 121ºC.


Component g/liter
Agar 20
Dextrose 2.5
Potassium Phosphate, Dibasic 2.5
Sodium Chloride 5
Papaic Digest of Soybean Meal 3
Pancreatic Digest of Casein 17
Total: 50g/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 refrigerated 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. "Antibiotic Medium #9 (Powder)" Aladdin Knowledge Base, updated 09/06/2025. https://www.aladdinsci.com/us_pt/faqs/antibiotic-medium-9-powder-en.html
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