Elcometer 138 Abrasive Soluble Salt Test Kit – ASTM D4940
The Elcometer 138 Abrasive Soluble Salt Test Kit is designed to detect soluble salt contamination in abrasives used for blast cleaning operations, in accordance with ASTM D4940. Such contamination—originating from the source material or through repeated recycling of the blasting media—can transfer onto the steel surface during preparation, potentially causing accelerated corrosion and premature coating failure.
Using this kit, inspectors and quality control personnel can quickly and easily evaluate abrasive cleanliness in the field or laboratory. The test method involves mixing a measured volume of abrasive with an equal volume of water, agitating the mixture, and allowing the soluble salts to dissolve. After settling, the solution is filtered, and the conductivity is measured using the included Elcometer 138 Conductivity Meter. This procedure delivers a reliable and precise measurement of salt levels before blasting begins, helping ensure surfaces are free from contamination prior to coating application.
Ensure your blasting media is clean and compliant. The Elcometer 138 Abrasive Soluble Salt Test Kit offers a precise, ASTM-compliant method for testing salts in abrasives—helping you protect surface integrity and coating performance from the start.
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