Bulgarian Institute for Standardization
Standards – always a step ahead
Phone: +359 2 8174 523, +359 2 8174 504
E-mail: info@bds-bg.org
1797 Sofia, 13 "Lachezar Stanchev" Str., "Izgrev" Complex
ID number: 175079183, VAT number: BG175079183
Main menu

ISO/TS 5667-25:2022

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

Feb 23, 2022

General information

60.60     Feb 23, 2022


ISO/TC 147/SC 6

Technical Specification





Language in which you want to receive the document


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.

Life cycle


ISO/TS 5667-25:2022
60.60 Standard published
Feb 23, 2022