1. Scope

1.1 This test method covers the determination of electrical conductivity and resistivity of high purity water samples below 10 S/cm (above 0.1 Mohm-cm). It is applicable to both continuous and periodic measurements but in all cases, the water must be flowing in order to provide representative sampling. Static grab sampling cannot be used for such high purity water. Continuous measurements are made directly in pure water process lines, or in side stream sample lines to enable measurements on high temperature or high pressure samples, or both.

1.2 The values stated in SI units are to be regarded as the standard.

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.

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

D1066 Practice for Sampling Steam

D1125 Test Methods for Electrical Conductivity and Resistivity of Water

D1129 Terminology Relating to Water

D1192 Guide for Equipment for Sampling Water and Steam in Closed Conduits

D1193 Specification for Reagent Water

D2186 Test Methods for Deposit-Forming Impurities in Steam

D2777 Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water

D3370 Practices for Sampling Water from Closed Conduits

D3864 Guide for Continual On-Line Monitoring Systems for Water Analysis

D4519 Test Method for On-Line Determination of Anions and Carbon Dioxide in High Purity Water by Cation Exchange and Degassed Cation Conductivity

Keywords

cation; conductivity; high purity water measurements; resistivity; specific conductance; specific resistance; Conductance and conductivity (electrical)--water; Contamination--water; High-purity water; Instrumental measurement--water; Ionic contamination; Resistance and resistivity (water); Sampling water analysis applications; Specific conductance; Specific resistance (resistivity);

ICS Code

ICS Number Code 13.060.60 (Examination of water for physical properties)

DOI: 10.1520/D5391-99R05

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