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Antimicrobial testing: what do the results mean?

Tests designed to determine the antimicrobial efficacy of a product, such as a preservative in a cosmetic, a sanitiser in a household cleaner, or a disinfectant, have set pass requirements.

These often specify minimum log reductions or % kill to meet the requirements of the test. This article will discuss how these tests are conducted, what these terms mean, how they are calculated and how changes in the method used for the testing may lead to variations in the results achieved.

We will also cover changes to the Laboratory Accreditation Standard, ISO 17025 with regards to Measurement of Uncertainty and Statements of Conformity and what impact these changes may have on certificates of analysis issued for Testing.

Antimicrobial active substances may be included in finished goods to provide internal protection from contamination by microorganisms, or to provide an external effect to kill microorganisms on surfaces. The antimicrobial actives that may be used are governed by two main regulations; for personal care products antimicrobial actives, known as preservatives, must be included in Annex V of the Cosmetic Regulations1 whilst those used in oth

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Upcoming Events

in-cosmetics Korea 2022

Hall C, Coex, Seoul, South Korea
13 - 15 July 2022

SCSS Suppliers Day - SINGAPORE

SINGAPORE MARRIOTT TANG PLAZA HOTEL
Thursday 25th & Friday 26th August 2022

32nd IFSCC Congress

Park Plaza Hotel, Westminster
19-22 September 2022

in-cosmetics Latin America 2022

Expo Center Norte, Sao Paulo
21 - 22 September

Cosmetorium 2022

Palau de Congressos de Barcelona
28 - 29 September

SEPAWA 2022

Estrel Congress Center, Berlin
26 - 28 October

Access the latest issue of Personal Care Magazine on your mobile device together with an archive of back issues.

Download the FREE Personal Care Magazine app from your device's App store

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