EN 16421:2014

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Influence of materials on water for human consumption -
  Enhancement of microbial growth (EMG) - Method 1: Measured
  by Biomass Production Potential (BPP) measured by ATP
5 Influence of materials on water for human consumption -
  Enhancement of microbial growth (EMG) - Method 2: Measured
  by biofilm volume
6 Influence of materials on water for human consumption -
  Enhancement of microbial growth (EMG) - Method 3: Measured by
  mean dissolved oxygen depletion
Annex A (normative) - Method 1: Measured by Biomass Production
        Potential (BPP) measured by ATP - Assessment of the
        suitability of test water for its use in the BPP test
        (biological stability and the need for addition of trace
        elements)
Annex B (normative) - Method 1: Measured by Biomass Production
        Potential (BPP) measured by ATP - Protocol of ATP analysis
Annex C (informative) - Method 1: Measured by Biomass Production
        Potential (BPP) measured by ATP - ATP and its measurement
Annex D (informative) - Method 1: Measured by Biomass Production
        Potential (BPP) measured by ATP - Evaluating procedures
        for removal of attached biomass
Annex E (informative) - Method 1: Measured by Biomass Production
        Potential (BPP) measured by ATP
Annex F (informative) - Method 2: Measured by biofilm volume
Annex G (informative) - Method 2: Measured by biofilm volume
Annex H (informative) - Method 3: Measured by mean dissolved
        oxygen depletion
Bibliography

This European Standard specifies three methods for determining the ability of non-metallic materials to enhance the growth of micro-organisms.This European Standard is applicable to those materials destined to be used under various conditions for the transport and storage of water intended for human consumption.The standard allows for the testing of a single type of material, or a product in which only one material is in contact with water. It is unsuitable for use with assembled products where more than one material is exposed to water.NOTE The results given by each method are not directly comparable.