Explanation Of Symbols - 3M Petrifilm 6475 Instrucciones Del Producto

Interpretation:
Calculate the number of microorganisms present in the test sample according to ISO 7218
into account only 3M Petrifilm RYM Plates that contain up to 150 colonies. Estimates are outside of the scope of the NF Validation Certification
(cf. interpretation part paragraph 5).
For more information about end of validity, please refer to NF VALIDATION certificate available on the website mentioned above
REFERENCES
1. U.S. Food and Drug Administration. Code of Federal Regulations, Title 21, Part 58. Good Laboratory Practice for Nonclinical Laboratory Studies.
2. ISO 7218. Microbiology of food and animal feeding stuffs - General requirements and guidance for microbiological examinations.
3. ISO/IEC 17025. General requirements for the competence of testing and calibration laboratories.
4. ISO 16140. Microbiology of food and animal feeding stuffs - Protocole for the validation of alternative method
5. ISO 21527. Microbiology of food and animal feeding stuffs- Horizontal method for the enumeration of yeasts and moulds.
Part 1: Colony count technique in products with water activity greater than 0.95
Part 2: Colony count technique in products with water activity less than or equal to 0.95
6. ISO 6887-1. Microbiology of food and animal feeding stuffs- Preparation of test samples, initial suspension and decimal dilutions for
microbiological examination.

EXPLANATION OF SYMBOLS

Caution or Warning, consult Product Instructions.
Consult Product Instructions.
The lot in a box and the hourglass symbols are symbols that represent lot number and expiration date. The hourglass is followed by a
year and month which represents the expiration date (year and month: YYYY-MM). The entire line after the hourglass represents the lot
number (YYYY-MM AZ).
Store between given temperatures.
3M 01/13 – 07/14
ALTERNATIVE ANALYTICAL METHODS FOR AGRIBUSINESS
www.afnor-validation.com
4
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for one plate per dilution. For calculation, take
2