Enumeration of Clostridium perfringens — Microbiological Performance Testing of Membrane Filters in Accordance with EN ISO 7704:2023
Authors: Dr. Nils Jäger¹, Dr. Diana Patzelt² | ¹Lab Essentials Applications Development, Sartorius Lab Instruments, Göttingen, Germany | ²Product Management, Lab Essentials Microbiology, Sartorius France S.A.S, Aubagne, France
Overview
The revised EN ISO 7704:2023 standard specifies the performance testing requirements of membrane filters used in water quality analysis. It mandates that manufacturers or microbiological laboratories using membrane filters demonstrate the suitability of each batch of membrane filters in conjunction with each lot of the respective solid culture medium. This study demonstrates the microbiological performance testing of membrane filters in accordance with EN ISO 7704:2023, using the EN ISO 14189 standard as a specific example. Additionally, the study investigates the impact of non-selective media from different manufacturers on the productivity ratio. The Sartorius high flow membrane filters were found to comply with the revised EN ISO 7704:2023 standard.
- Document type: Application Note
- Page count: 6
- Read time: 8 minutes
Key Takeaways
- EN ISO 7704:2023-compliant release of Sartorius cellulose nitrate high flow membrane filters
- Ensure high productivity ratios for water testing
- Effect of culture media on the productivity ratio calculation of the membrane filter
This Resource is Designed for:
- Lab Managers
- Application Specialist
- Scientists
- Lab Technicians
Applications Supported:
- Environmental & Water Testing
- Microbial enumeration
- Environmental & Water Testing
- Microbiological Quality Control