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Methods:Penassay Broth

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Penassay Broth is a rich growth medium for bacteria, which is used for antibiotic assay testing.[1] Another name for Penassay Broth is Antibiotic Medium 3.


Bacto Penassay Broth contains (per liter)[2]:

Ingredient Amount per liter

Bacto-Beef Extract

1.5 g

Bacto-Yeast Extract

1.5 g


5.0 g


1.0 g

Sodium Chloride

3.5 g

Dipotassium Phosphate

3.68 g

Monopotassium Phosphate

1.32 g


Usage Examples

User notes

Related GO Terms


See Help:References for how to manage references in EcoliWiki.

  1. Atlas, R.M. (1997) Handbook of Microbiological Media, 2nd ed., L.C. Parks, ed. CRC Press, Inc. Boca Raton, FL
  2. Difo Manual, 9th ed.