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  • ASTM
    D932-85(2009) Standard Test Method for Iron Bacteria in Water and Water-Formed Deposits
    Edition: 2009
    $103.58
    Unlimited Users per year

Description of ASTM-D932 2009

ASTM D932 - 85(2009)

Standard Test Method for Iron Bacteria in Water and Water-Formed Deposits

Active Standard ASTM D932 | Developed by Subcommittee: D19.24

Book of Standards Volume: 11.02




ASTM D932

Significance and Use

Iron bacteria is a general classification for microorganisms that utilize ferrous iron as a source of energy and are characterized by the deposition of ferric hydroxide in their mucilaginous sheaths. The process is continuous with these growths, and over a period of time large accumulations of slimey brown deposits can occur. Iron bacteria may clog water lines, reduce heat transfer, and cause staining; objectionable odors may arise following death of the bacteria. The organic matter in the water is consequently increased, and this in turn favors the multiplication of other bacteria.

1. Scope

1.1 This test method covers the determination of iron bacteria by examination under the microscope. The method provides for the identification of the following genera of bacteria found in water and water-formed deposits: Siderocapsa , Gallionella (Dioymohelix) , Sphaerotilus , Crenothrix , Leptothrix , and Clonothrix .

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 This standard does not purport to address the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D887 Practices for Sampling Water-Formed Deposits

D1129 Terminology Relating to Water

D1193 Specification for Reagent Water

D3370 Practices for Sampling Water from Closed Conduits


Keywords

Bacteria/bacterial control--water; Microscopic examination--water; Water-formed deposits;


ICS Code

ICS Number Code 13.060.50 (Examination of water for chemical substances)


DOI: 10.1520/D0932-85R09

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ASTM D932

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About ASTM

ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.
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