ASTM-D6504 Standard Practice for On-Line Determination of Cation Conductivity in High Purity Water

ASTM-D6504 - 2011 R16(E1) EDITION - CURRENT
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Standard Practice for On-Line Determination of Cation Conductivity in High Purity Water




1.1 This practice describes continuous sample conditioning by hydrogen ion exchange and measurement by electrolytic conductivity. It is commonly known as cation conductivity measurement in the power industry although it is actually an indication of anion contamination in high purity water samples. Measurements are typically in a range less than 1 μS/cm.

1.2 The actual conductivity measurements are made using Test Method D5391.

1.3 This practice does not provide for separate determination of dissolved carbon dioxide. Refer to Test Method D4519.

1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.

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.


boiler cycle chemistry; cation conductivity; on-line; process measurement;; ICS Number Code 13.060.60 (Examination of water for physical properties)

To find similar documents by ASTM Volume:

11.01 (Water (I))

To find similar documents by classification:

13.060.60 (Examination of physical properties of water)

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Document Number


Revision Level

2011 R16(E1) EDITION



Modification Type

Reapproval with Ed Change

Publication Date

March 1, 2016

Document Type


Page Count

6 pages

Committee Number