EN ISO 21148:2017

European Foreword
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Premises
5 Equipment
6 Strains of microorganisms
7 Personnel
8 Preparation of the apparatus and glassware
9 Preparation and sterilization of culture media and
   reagents
10 Laboratory samples
11 Operating practices
12 Expression of results
13 Neutralization of the antimicrobial properties
   of the product
Annex A (informative) - Basic identification techniques
Annex B (informative) - Basic techniques for counting
        and plating
Annex C (informative) - Preparation and calibration
        of inoculums
Bibliography

ISO 21148:2017 gives general instructions for carrying out microbiological examinations of cosmetic products, in order to ensure their quality and safety, in accordance with an appropriate risk analysis (e.g. low water activity, hydro-alcoholic, extreme pH values).Because of the large variety of products and potential uses within this field of application, these instructions might not be appropriate for some products in every detail (e.g. certain water-immiscible products).