Potato Dextrose Broth

Potato Dextrose Broth is used for the cultivation of fungi in a laboratory setting. Potato Dextrose Broth is not intended for use in the diagnosis of disease or other conditions in humans.

Potato Dextrose Broth is a general purpose broth for yeasts and molds. The low pH of this medium inhibits bacterial growth. Potato Dextrose Broth is the same formula as Potato Dextrose Agar, but agar has been omitted.


Formula Liter
Potato Infusion from 200 g 4 g*
Dextrose 20 g 

  *4.0 g of potato extract is equivalent to 200 g of infusion from potatoes.
Final pH: 7.2 ± 0.2 at 25°C
Formula may be adjusted and/or supplemented as required to meet performance specifications.


  1. Dissolve 24 g of the medium in one liter of purified water.
  2. Mix thoroughly.
  3. Autoclave at 121°C for 15 minutes.

Order Details

Product # Product Description
7585A Potato Dextrose Broth, 500 g
7585T Potato Dextrose Broth, 5 kg