Water quality - Free Standards Documents

Detection and enumeration of bacteriophages

June 16, 2021 admin BS standards Leave a comment

BS ISO 10705-3-2003 pdf free.Water quality一 Detection and enumeration of bacteriophages一 Part 3: Validation of methods for concentration of bacteriophages from water. For the purposes of this document, the terms and definitions given in ISO/IEC Guide 2 and the following apply: bacteriophages bacterial viruses which are capable of infecting selected host strains NOTE Bacteriophages produce visible plaques (clearance zones) in […]

Determination of trace el ements using atomic absorption spectrometry with graphite furnace

June 10, 2021 admin BS standards Leave a comment

BS EN ISO 15586:2003 pdf free.Water quality一 Determination of trace el ements using atomic absorption spectrometry with graphite furnace. Pre-treatment and analysis of samples with especially low element concentrations should be carried out under ‘clean laboratory” conditions. The mclean laboratory” technique requires that the laboratory be supplied with filtered air, and that the samples be continuously protected from contamination originating […]

Guidance standard for the routine sampling and pretreatment of benthic diatoms from rivers

June 9, 2021 admin BS standards Leave a comment

BS EN 13946:2003 pdf free.Water quality – Guidance standard for the routine sampling and pretreatment of benthic diatoms from rivers. In general, cobbles are the preferred substratum for sampling, as these balance substratum stability (allowing diatom communities to develop) with manoeuvrability. Pebbles and boulders can also be used. At least five cobbles should be sampled. However, if cobbles are unavailable, […]