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Significance and Use
4.1 Deposits in piping from aqueous process streams serve as an indicator of fouling, corrosion or scaling. Rapid techniques of analysis are useful in identifying the nature of the deposit so that the reason for deposition can be ascertained.
4.3 Deposits formed from or by water in all its phases may be further classified as scale, sludge, corrosion products or biological deposits. The overall composition of a deposit or some part of a deposit may be determined by chemical or spectrographic analysis; the constituents actually present as chemical substances may be identified by microscope or X-ray.
1.1 These practices provide directions for the preparation of the sample for analysis, the preliminary examination of the sample, and methods for dissolving the analytical sample or selectively separating constituents of concern.
1.2 The general practices given here can be applied to analysis of samples from a variety of surfaces that are subject to water-formed deposits. However, the investigator must resort to individual experience and judgement in applying these procedures to specific problems.
Preparation of the Analytical Sample
Preliminary Testing of the Analytical Sample
Dissolving the Analytical Sample
1.5 This standard does not purport to address all of 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. For a specific warning statement, see Note 2.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D887 Practices for Sampling Water-Formed Deposits
D932 Test Method for Iron Bacteria in Water and Water-Formed Deposits
D933 Practice for Reporting Results of Examination and Analysis of Water-Formed Deposits
D934 Practices for Identification of Crystalline Compounds in Water-Formed Deposits By X-Ray Diffraction
D1129 Terminology Relating to Water
D1193 Specification for Reagent Water
D1245 Practice for Examination of Water-Formed Deposits by Chemical Microscopy
D2332 Practice for Analysis of Water-Formed Deposits by Wavelength-Dispersive X-Ray Fluorescence
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
ICS Number Code 13.060.60 (Examination of water for physical properties)
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ASTM D2331-08(2013), Standard Practices for Preparation and Preliminary Testing of Water-Formed Deposits, ASTM International, West Conshohocken, PA, 2013, www.astm.orgBack to Top