AS 4276.1:2021 pdf download.Water microbiology Method 1: Water quality一General requirements and guidance for microbiological examinations by culture (ISO 8199:2018, MOD). This document specifies requirements and gives guidance for performing the manipulations common to each culture technique for the microbiological examination of water, particularly the preparation of samples, culture n’,edia, and general apparatus and glassware, unless otherwise required in the specific standard. It also describes the various techniques available for detection and enumeration by culture and the criteria for determining which technique is appropriate. This document is mainly intended for examinations for bacteria, yeasts and moulds, but some aspects are also applicable to bacteriophages, viruses and parasites. It excludes techniques not based on culturing microorganisms, such as polymerase chain reaction (PCRJ methods. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 7704, Water quality — Evaluation of membrane filters used for microbiological analyses ISO 11133, Microbiology of food, animal feed and water — Preparation, production, storage and performance testing…