USP

USP <61> – Microbial Enumeration Test

The USP <61> - Microbial Enumerations Test is a product safety test found in Chapter 61 of the United States Pharmacopeia. It is suggested for use by the FDA for pharmaceuticals as well as cosmetics and personal care products to ensure that a product's preparation complies with pre-set specifications...

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USP <61> Microbial Examination of Nonsterile Products

The US Pharmacopeial Convention (USP) has developed and maintains a compendium of several test methods, which are utilized by companies that produce drugs and cosmetics to ensure quality and product integrity. Individual chapters of the compendium - each detailing a different test method - are identified by the chapter...

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USP <62> – Test For Objectionable Microorganisms

The USP <62> Test for Specified Microorganisms, like the USP <61>, is a product safety test from the United States Pharmacopeia. The USP <62> test evaluates a product for the presence or absence of potential pathogens. USP <62> tests are necessary for cosmetic and personal products to determine that any...

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USP <51> – Preservative Challenge Test

Introduction The USP Chapter 51 Preservative Challenge Test is the most common method used to gauge preservative effectiveness.  Much like a Preservative Challenge Screen, it is used to evaluate the effect of preservatives in cosmetics, personal care products, and drug products. Preservatives are antimicrobial ingredients that are added to aqueous...

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Preservative Challenge Test

USP 51: Procedure at a Glance The Antimicrobial Effectiveness test method or USP 51 utilizes the following microorganisms Candida albicans (ATCC No. 10231), Aspergillus niger (ATCC No. 16404), Escherichia coli (ATCC No. 8739), Pseudomonas aeruginosa (ATCC No. 9027), and Staphylococcus aureus (ATCC No. 6538). The test product is inoculated with...

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