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Main sol. 246a

Internal Solution-ID: S510

Equipment needed: Autoclave
1 Rehydrate and grow lyophilized cells from the ampoule in liquid medium 246. Subsequent subculturing may be carried out in liquid medium or on agar plates.
Compound Amount Unit Conc. [g/L] Conc. [mM]
Beef extract 10 g 10 -
Peptone 10 g 10 -
Agar 20 g 20 59.465
Tap water 250 ml - -
Sea water 750 ml - -
2 Dissolve beef extract and peptone by heating in tap water, adjust pH to 7.8 and boil for 10 min. Readjust pH to 7.3. Add agar and autoclave at 121°C for 20 min. Cool to 50°C and add warm (50°C) sterile sea water. Liquid medium without agar should be combined when cooled to room temperature.
3 Natural sea water is stored in the dark for at least three weeks to "age". If natural sea water is not available use artificial sea water.
246a REACTIVATION WITH LIQUID MEDIUM 246