ASTM D4940 PDF

ASTM D standard describes the conductivity test used to assess the presence of ASTM D test method consists in combining equivalent volumes of. ASTM D – Standard Test Method for Conductimetric Analysis of Water Soluble Ionic Contaminatio. ASTM D Standard Test Method for Conductimetric Analysis of Water Soluble Ionic Contamination of Blast Cleaning Abrasives.

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The Elcometer Abrasive Soluble Salt Test Kit provides all that is needed to carry out the test in the field or in the laboratory.

Elcometer 138 Abrasive Soluble Salt Test Kit – ASTM D4940

Unless otherwise indicated, it is intended that all reagents conform to the speci? This contamination of d4904 abrasive can transfer to the steel surfaces being blasted, where it may accelerate corrosion.

This contamination can be transferred to the blast cleaned surface and result in accelerated corrosion conditions and also cause premature coating failure, if asgm contamination is not removed prior to applying the coating.

Elcometer E Conductivity Meter An entry level conductivity meter, is ideal for measuring soluble salt concentration and electric conductivity EC of solutions. A Micro Mho Per Centimetre 1?

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? However, the bias introduced by this atsm is in the proper direction. The Society v4940 Protective Coatings, 40 24th St. Reagents and Materials 6. The reader is warned that it is difficult to make direct comparisons between the results of these two different methods of analysis. A means of adjusting for temperature or controlling the temperature is essential.

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A typical value astj a low level of contamination is 50? Either a dip-type, pipet-type, or cup-type cell may be used.

Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

Method to Method Comparison: Summary of Test Method 3. The ISO method is well suited to use in a laboratory setting but is poorly suited to use in the? Another method is to stir the solution with a clean thermometer while the vessel is warmed or cooled by an external source.

Abrasives that showed qualifying extracted salts using the ISO Procedure also showed qualifying extracted salt levels as speci? If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.

Test the samples separately. Calibration and Standardization 8. However, slags quenched with seawater or other contaminated water, contain high amounts of ionic material as does seashore sand. Originally approved in The resulting slurry is allowed to settle and the filtered water can then be tested using a conductivity meter.

An independent study by SSPC showed that the relative order of extracted salts using each type of procedure on abrasive materials was identical. Thus, it provides an indication of ionic corrosion potential.

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Elcometer Abrasive Soluble Salt Test Kit – ASTM D

The amount of supernatant liquid? When no markings distinguishing between units of production appear, take samples from the different packages in 8.

NOTE 1—A typical value of conductivity for a high level of contamination is ? Current edition approved January 10, Elcometer Bresle Salt Kit A range of products to test the level of contaminants on the surface.

This test is useful in establishing the cleanliness of the abrasive at the jobsite. The ASTM method is well suited for use in the? Converting from one unit base to another is not useful as the two methods differ in process.

There was no direct correlation possible between numerical results obtained and reported by the two different methods. Last previous edition approved in as D – Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. Elcometer Inc, Michigan Office Relocation. A number in parentheses indicates the year of last reapproval.

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

The ASTM method allows a user to measure a loose packed volume of abrasive and mix that abrasive with an equal volume of reagent water.

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