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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This constant should be checked periodically, one zstm being as follows: A measured volume of the abrasive is mixed with the same volume of water and agitated to allow any soluble salts to dissolve in the water.
Elcometer Abrasive Soluble Salt Test Kit – ASTM D
Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. The Elcometer Abrasive Soluble Salt Test Kit provides all that is needed to carry out the test in the field or in the laboratory. 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.
Elcometer E Conductivity Meter An entry level conductivity meter, is ideal for measuring soluble salt concentration and electric conductivity EC of solutions. NOTE 3—In general the cell constant is not greatly affected by variations in the strength of the KCl solution, but, for greater accuracy, measurements should be made at or near the speci?
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. Unless otherwise indicated, it is intended that all reagents conform to the speci? Calibration and Standardization 8. Current edition approved January 10, A number in parentheses indicates the year of last reapproval.
This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? When no markings distinguishing between units of production appear, take samples from the different packages in 8. The conversion factor aztm The ISO method is well suited to use in a laboratory setting but is poorly suited to use in the?
This contamination of the abrasive can transfer to the steel surfaces being blasted, where it may accelerate corrosion.
Elcometer Digital Surface Profile Gauge Digital, fast and accurate surface profile inspection on flat and curved surfaces. The ASTM method is well suited for use in the? Test the samples separately. A means of adjusting for temperature or controlling the temperature is essential. Abrasives used for blast cleaning surfaces can be contaminated with soluble salts due to the source or the re-use of the blasting media.
Elcometer 138 Abrasive Soluble Salt Test Kit – ASTM D4940
However, the bias introduced by this factor is in the proper direction. This test is useful in establishing the cleanliness of the abrasive at the jobsite. Let stand for 8 min and then stir again for 1 min. Converting from one unit base to another is not useful as the two methods differ in process. A Micro Mho Per Centimetre 1? Reagents and Materials 6. It differs aatm this test method in two major areas: The Society for Protective Coatings, 40 24th St.
There was no direct correlation possible between numerical results obtained and reported by the two different methods.
Method to Method Comparison: That is, high conductivity due to a lower pH adtm the contamination would normally indicate greater corrosion potential. This 1 This speci? The amount of supernatant liquid? Summary of Test Method 3.
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. This contamination can be transferred to the blast cleaned surface and result in accelerated corrosion conditions and also cause premature coating failure, if this contamination is not removed prior to applying the coating. Another method is to stir the solution with a clean thermometer while the vessel is warmed or cooled asfm an external source.
NOTE 1—A typical value of conductivity for a high level of contamination is ? Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. The conductivity, which is related to the concentration of soluble ionic materials contaminating the abrasive surface, is calculated from the conductance and the cell constant.
The resulting slurry is allowed to settle and the filtered water can then be tested using a conductivity meter. The reader is warned that it is difficult to make direct comparisons between the results of these two different methods of analysis.
Elcometer E Conductivity Meter, ml Precision and Bias 7 Originally approved in Abrasives that showed qualifying extracted salts using the ISO Procedure also showed qualifying extracted salt levels as speci?