What is the purpose of the Heterotrophic Plate Count (HPC) pour plate method 8241?

Document ID

Document ID TE1150

Version

Version 4.0

Status

Status Published

Published Date

Published Date 04/26/2018
Question
What is the purpose of the Heterotrophic Plate Count (HPC) pour plate method 8241?
Summary
The purpose of Heterotrophic Bacteria, Heterotrophic Plate Count (HPC) method 8241
Answer
The Pour Plate Method, also known as the standard plate count, is simple to perform and is commonly used to determine heterotrophic bacteria density. The standard plate count attempts to provide a standardized means of determining the density of aerobic and facultatively anaerobic heterotrophic bacteria in water. Bacteria occur singly or in pairs, chains, clusters or packets, and no single method, growth medium, or set of physical conditions can satisfy the physiological requirements of all bacteria in a water sample. However, the heterotrophic plate count is a good measure of water treatment plant efficiency, aftergrowth in transmission lines, and the general bacterial composition of source water.

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