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Penase, 20 mL
Concentrate Penicillinase inactivates 10,000,000 International units/mL of Penicillin G (20,000 L.U./mL/min)
Penase and Penase Concentrate are beta-lactamases which hydrolyze the beta-lactam ring in penicillins, thereby, inactivating the antimicrobial properties of penicillin.
Both products are used in media for sterility testing of penicillins and for determining microbial counts of materials containing penicillin.
1. Levy unit (LU) — amount of penicillinase that inactivates 59.3 IU (international units) of sodium penicillin G per hour at pH 7.0 and 25?C.
2. Not all penicillins are comparable to penicillin G in regard to their inactivation by penicillinase. Some may require as much as 20 times more penicillinase than does penicillin G.
两种产品被用于媒体不育试验的青霉素、确定微生物项材料含有青霉素。
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