采用直接接种法对120万u/瓶注射用苄星青霉素进行无菌检查。实验结果表明,每瓶供试品用6ml青霉素酶稀释,向每支装量为120ml的培养基接入1.0ml供试液后培养,可消除苄星青霉素的抑菌活性,且培养基能够澄清,便于观察是否有微生物生长。 The direct inoculation method was used to sterilize 1.2 million u / bottle of benzathine penicillin for injection. The experimental results show that each bottle of the test sample diluted with 6ml penicillinase, to each of the amount of 120ml medium access to 1.0ml for the test solution after the culture to eliminate the antibacterial activity of benzathine penicillin, and the medium can clarify , Easy to observe whether there is microbial growth.