ASTM D4940 PDF

Tygoramar Summary of Test Method 3. The resulting slurry is allowed to settle and the filtered water can then be tested using a conductivity meter. Elcometer Bresle Salt Kit A range of products to test the level of contaminants on the surface. However, slags quenched with seawater or other contaminated water, contain high amounts of ionic material as does seashore sand.

Author:Gardale Akinotaxe
Country:Gabon
Language:English (Spanish)
Genre:Health and Food
Published (Last):4 September 2008
Pages:317
PDF File Size:8.23 Mb
ePub File Size:10.76 Mb
ISBN:933-5-25451-900-5
Downloads:37568
Price:Free* [*Free Regsitration Required]
Uploader:Turr



Tygoramar Summary of Test Method 3. The resulting slurry is allowed to settle and the filtered water can then be tested using a conductivity meter. Elcometer Bresle Salt Kit A range of products to test the level of contaminants on the surface.

However, slags quenched with seawater or other contaminated water, contain high amounts of ionic material as does seashore sand.

Thus, it provides an indication of ionic corrosion potential. A typical value for a low level of contamination is 50? The ASTM method is well suited for use in the? A Micro Mho Per Centimetre 1? NOTE 3β€”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? A number in parentheses indicates the year of last reapproval. The ISO method is well suited to use in a laboratory setting but is poorly suited to use in the?

Abrasives that showed qualifying extracted salts using the ISO Procedure also showed qualifying extracted salt levels as speci? Calculate the cell constant, K25, as follows: Let stand for 8 min and then stir again for 1 min. Last previous edition approved in as D β€” Elcometer Digital Surface Profile Gauge Digital, fast and accurate surface profile inspection on flat and curved surfaces.

Another method is to stir the solution with a clean thermometer while the vessel is warmed or cooled by an external source. When no markings distinguishing between units of production appear, take samples from the different packages in 8. Method to Method Comparison: Test the samples separately. Calibration and Standardization 8. This constant should be checked periodically, one method being as follows: 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.

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

Unless otherwise indicated, it is intended that all reagents conform to the speci? Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. 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. This test is useful in establishing the cleanliness of the abrasive at the jobsite.

Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. Use successive portions of the sample until a constant value is obtained.

An independent xstm by SSPC showed that the relative order of extracted salts using each type of procedure on abrasive materials was identical. Either a dip-type, pipet-type, or cup-type cell may be used.

The Elcometer Abrasive Soluble Salt Test Kit provides all that is needed to carry out zstm test in the field or in the laboratory. Current edition approved January 10, Originally approved in However, the bias introduced by this factor is in the proper direction. A superscript epsilon e indicates an editorial change since the last revision or reapproval. That is, high conductivity due d a lower pH of the contamination would normally indicate greater corrosion potential.

Elcometer E Conductivity Meter An entry level conductivity meter, is ideal for measuring soluble salt concentration and electric conductivity EC of solutions. Elcometer E Conductivity Meter, ml This contamination can be transferred to the blast cleaned surface and result in accelerated corrosion conditions and also cause premature coating failure, if this asmt is not removed prior to applying the coating.

The conversion factor from? This 1 This speci? The Society for Protective Coatings, c 24th St. 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. TOP Related Posts.

RISHI PANCHAMI FULL VRAT KATHA IN PDF

ASTM D4940 PDF

A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval. Scope 1. A volume comparison is more closely related to surface area of the abrasives than is a weight comparison. 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. Referenced Documents 2.

DIURESIS HORARIA FORMULA PDF

Elcometer 138 Abrasive Soluble Salt Test Kit – ASTM D4940

.

Related Articles