DIN EN ISO 22117 E:2018-03 Specific requirements and guidelines for proficiency testing through inter-laboratory comparisons in food chain microbiology (draft)
2019DIN EN ISO 22117:2019-08 Microbiology of the food chain - Specific requirements and guidance for proficiency testing by interlaboratory comparison (ISO 22117:2019); German version EN ISO 22117:2019
2019DIN EN ISO 22117:2019 Microbiology of the food chain - Specific requirements and guidance for proficiency testing by interlaboratory comparison (ISO 22117:2019)
1970DIN EN ISO 22117 E:2018-03 Specific requirements and guidelines for proficiency testing through inter-laboratory comparisons in food chain microbiology (draft)