Fast medium (Fast, 1974)

Originally cited by Fast, 1974. Über eine Methode der  kombinierten generativenvegetativen Vermehrung von Cypripedium calceolus. Die orchidee, 25, 125-9.

Ca(NO3) 2 * 4 H2O  83 mg  KCl  167 mg  KH2PO4  83 mg  MgSO4 * 7 H2O  83 mg  NH4NO3  167 mg  FeNa2EDTA  17 mg  Heller’s trace elements  0.8 ml  Biotin  0.01 mg  Nicotinic acid  0.1 mg  Peptone  1.67 g  Fresh brewer's yeast  8.3 g  Sucrose  11.67 g  Fructose  5 g  Agar  8.3 g

Adjust pH to 5.5; concentration of mineral salts is 0.06%.

Source: Rasmussen, H. Terrestrial orchids from seed to mycotrophic plant. Cambridge University Press, Cambridge. 1995.