Ampicillin inhibits cell wall biosynthesis (peptidoglycan cross-linking). Stock Solution of antibiotics dissolved in water should be sterilized by filtration through a 0.22 micron filter.

Gentamycin Sulfate Solution is used as an inhibitor for the growth of a wide variety of gram-positive and gram-negative microorganisms. It is intended for research only. The bottle concentration is 50mg/ml.