ISO/TS 5667-25:2022

Water quality — Sampling — Part 25: Guideline on the validation of the storage time of water samples

The purpose of this document is to describe test plans and different operating methodologies of these test plans to define and verify the acceptable length of stability of a substance in a sample under specified conditions of preservation (temperature, matrix, light, addition of a stabilizer, where appropriate, type?of?preservation etc.) before starting analytical protocols (chemicals and physico-chemicals analysis). Biological and microbiological methods are excluded.

It is necessary to have an analytical method with performances that have already been characterized (repeatability, intermediate precision, trueness, accuracy and uncertainty) in order to perform the?stability study and implement its test plans.

Edition	2022
Standard Part No	25
Published Date	2022
Published By	ISO/TS
Page Count	50