What is EN ISO 5667-24:2018?

The Environmental Management standard EN ISO 5667-24:2018 is part of the International Organization for Standardization (ISO) series of standards. It sets guidelines and procedures for the sampling and preservation of water samples to ensure accurate analysis and reliable results. This article aims to provide an easy-to-understand explanation of this technical standard.

Sampling Techniques in EN ISO 5667-24:2018

EN ISO 5667-24:2018 provides detailed instructions on various sampling techniques used to obtain representative water samples. These techniques include spot sampling, composite sampling, and time-proportional sampling. Spot sampling involves collecting a single sample at a specific location and time, while composite sampling involves combining multiple samples taken at different locations or times. Time-proportional sampling ensures that samples are collected at predetermined intervals to capture variations over time.

Preservation of Water Samples

Preservation of water samples is crucial to maintain their integrity during transport and storage. EN ISO 5667-24:2018 recommends appropriate preservation techniques, such as refrigeration, acidification, and filtration, depending on the specific parameters being tested. Refrigeration helps to slow down microbial activity and chemical reactions that could potentially alter the sample composition. Acidification is used to stabilize alkaline waters, preventing pH-dependent changes. Filtration is employed when solid particles need to be removed from the sample.

Quality Control and Quality Assurance

To ensure reliable results, EN ISO 5667-24:2018 emphasizes the importance of quality control and quality assurance measures throughout the sampling and analy