-Solubilize 20 mg mL-1 Chloramphenicol in 100 % Ethanol

-Store at -20 °C

- 50 % (v/v) glycerol

- 1 mM EDTA

- 0.1 % (w/v) bromphenol blue

- Solve in ddH2O

- 10 g Trypton

- 5 g yeast extract

- 10 g NaCl

- 12 g Agar-Agar (for plates)

- Adjust pH to 7.4

For 1 L M9 mineral medium you need 867 mL sterile water (for plates add 16 g Agar-Agar as well). Then add (in the following order:

- 300 µL 1 M CaCl2

- 100 mL 5x M9 salt solution

- 20 % glucose

For 500 mL stock solution add 100 g glucose to 440 mL water. Autoclave for 15 at 121° C

- 1 M MgSO4

- 1 mL biotin (1 mg/mL)

For 50 mL stock solution dissolve 50 mg biotin in 45 mL water. Add water to a final volume of 50 mL. Sterilize the solution over a 0.22-µm filter. Prepare 1 mL aliquots and store at -20°.

- 1 mL thiamin (1 mg/mL)

For 50 mL stock solution dissolve 50 mg thiamin-HCl in 45 mL water. Add water to a final volume of 50 mL. Sterilize the solution over a 0.22-µm filter. Prepare 1 mL aliquots and store at -20°.

- 10 mL 100x trace elements solution

Dissolve 5g EDTA in 800 mL water and adjust the pH to 7.5 with NaOH. Then add the other components in the quantities mentioned below and add water to a final volume of 1L. Sterilize the solution over a 0.22µm filter