Reason - a liquid solution at a temperature of -20

Training solutions. Ampicillin. O can be used 50% glycerol. Reason - a liquid solution at -20 C.

some laboratories use 96% (or 50%) ethanol to dissolve ampicillin. There are two advantages of this method: (I), a liquid solution at -20

C, (II) solution is sterilization. But the drawback is very serious: ethanol is a weak catalyst would-lactam ring of destruction. Thus, the solution is unstable. Carbenicillin. 200 g / ml for pETpfu. Chloramphenicol. With a solution at strattera 10mg -20

BL21 (DE3) pLyzS - 34g/ml -> 1 liter per 1 ml medium. GE antibiotic mixture (50x). C, in small quantities (about 10 freezing-thawing). Tetracycline. Solution in EtOH, store at -20

antagonist C., to choose to use Mg without environment. .