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ISO 11930 : 2019 – Preservative Efficacy Test
ISO 11930 is used to evaluate the overall antimicrobial protection of cosmetic products.
ISO 11930 standard includes –
- preservation efficacy test
- challenge test to assess antimicrobial protection of cosmetic products which are not identified microbiologically low-risk products, based on risk assessment described in ISO 29621
ISO 11930 test is applicable for water-soluble or water-miscible cosmetic products. This test can also be performed for products where water is used in internal phase.
Organisms typically used in this method: Staphylococcus aureus (ATCC 6538P), Escherichia coli (ATCC 8739), Pseudomonas aeruginosa (ATCC 15442), Candida Albicans (MTCC 3017), Aspergillus niger (ATCC 16888)
ISO 11930 Test Method – Determining Antimicrobial Protection of Cosmetic Product
The test procedure for preservative efficacy test involves inoculation of the test product sample with mandatory test organisms. Inoculated samples are incubated for a time of period of 28 days and examined for microbial contamination/growth at specific time period intervals.
For each result, log reduction values are calculated and compared to following recommended criteria –
Test microorganisms | Acceptance criteria A & B | Log reduction | ||
7 days | 14 days | 28 days | ||
Bacteria | A. B. | ≥ 3 – | ≥ 3 ≥ 3 | ≥ 3 ≥ 3 |
Fungus (Aspergillus niger) | A. B. | ≥ 1 – | ≥ 1 ≥ 1 | ≥ 1 ≥ 1 |
Yeast (Candida Albicans) | A. B. | – – | ≥ 0 ≥ 0 | ≥ 1 ≥ 0 |
At MIS, we have capabilities to assess the microbiological quality of cosmetic products using ISO 11930. Through our cosmetic testing and analysis services, we ensure product safety from microbial contamination.
In addition to antimicrobial preservative effectiveness testing, we do have the availability for microbial enumeration tests like USP 61.
If you need any assistance with ISO 11930 test i.e. pricing, turnaround time, and expert consultation, contact us here.
FAQs
ISO 11930 specifies test procedure to assess the antimicrobial protection of cosmetic products to ensure the product safety to end users.
ISO 11930 test is performed for water-soluble cosmetic formulations or where water is used in internal phase of product development.
ISO 11930 test takes 3 – 4 weeks to complete.
At Microbe Investigations, we test for ISO 11930 using the following Staphylococcus aureus (ATCC 6538P), Escherichia coli (ATCC 8739), Pseudomonas aeruginosa (ATCC 15442), Aspergillus niger (ATCC-16888), and Candida Albicans (MTCC 3017). Additional strains can be added on customer’s request.
Contact us for more information
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