Pseudomonas Agar Medium P(USP) is used for detection of Pyocyanin in Pseudomonas, especially Pseudomonas aeruginosa.

Formula(g/L):

Gelatin peptone.................20.0
Anhydrous Magnesium 
Chloride............................1.4
Anhydrous Potassium 
Sulfate............................10.0
Agar...............................15.0
Final pH 7.2±0.2 at 25℃
Directions:

Suspend 46.4g of the medium in 1L of distilled water, add glycerin 10ml, mix thoroughly, dispensing tube or triangle flask, sterilize in an autoclave at 121℃ for 15 minutes,  pour into slant or sterile petri dishes.