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.

Author: Faetaur Meztikora
Country: Ghana
Language: English (Spanish)
Genre: Love
Published (Last): 1 February 2004
Pages: 29
PDF File Size: 13.93 Mb
ePub File Size: 6.39 Mb
ISBN: 218-6-13683-855-8
Downloads: 91215
Price: Free* [*Free Regsitration Required]
Uploader: Gakree

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

When no markings distinguishing between units of production appear, take samples from the different packages in 8. The ISO method is well suited to use in a laboratory setting but is poorly suited to use in the?

Elcometer Abrasive Soluble Salt Test Kit – ASTM D

Your comments zstm receive careful consideration at a meeting of the responsible technical committee, which you may attend. Let stand for 8 min and then stir again for 1 min. The ASTM method is well suited for use in the? This constant should be checked periodically, one method being as follows: Thus, it provides an indication of ionic corrosion potential.

Elcometer 138 Abrasive Soluble Salt Test Kit – ASTM D4940

NOTE 1β€”A typical value of conductivity for a high level of contamination is ? In the ASTM Method the weight of the abrasive is not known; this makes it impossible to assess the ratio between conductivity values determined using this test method procedure and those determined using the ISO procedure. Converting from one unit base to another is not useful as the two methods differ in process. The amount of supernatant liquid? The resulting slurry is allowed to settle and the filtered water can then be tested using a conductivity meter.

  DELILLERIYLE ISLAM ILMIHALI PDF

A means of adjusting for temperature or controlling the temperature is essential. However, the bias introduced by this factor is in the proper direction.

Reagents and Materials 6. 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 aatm responsibility. 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.

Abrasives that showed qualifying extracted salts using the ISO Procedure also showed qualifying extracted salt levels as speci? Test the samples separately. 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?

However, slags quenched with seawater or other contaminated water, contain high amounts of ionic material as does seashore sand. This test is useful in establishing the cleanliness of the abrasive at the jobsite.

  GALGOTIA ECE PDF

A superscript epsilon e indicates an editorial change since the last revision or reapproval. 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 Bresle Salt Kit A range of products to test the level of contaminants on the surface. Current edition approved January 10, This 1 This speci?

Either a dip-type, pipet-type, or cup-type cell may be used. 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. Use successive dd4940 of the sample until a constant value is obtained.

This standard is subject to asym at any time by the responsible technical atm and must be reviewed every? 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.

Precision and Bias 7 The conductivity, which is related to the concentration of soluble ionic materials contaminating d440 abrasive surface, is calculated from the conductance and the cell constant.