Detecting soluble salts on abrasive materials
13.08.2019
The abrasives used for blasting surfaces can be contaminated with soluble salts due to reuse in the process. Contamination can be transferred to the blasted surface, thus favoring the conditions for the occurrence of corrosion and causing premature deterioration of the coating.
Field testing of abrasives can be performed quickly and easily using the Elcometer 138 kit, which is in accordance with ASTM D4940 method. A measured amount of abrasives is mixed with the same amount of water. The resulting mixture is stirred to allow the dissolution of possible soluble salts.
The resulting suspension is allowed to settle, and the filtered water can subsequently be tested using the conductometer. The Elcometer 138 kit contains absolutely all the devices and accessories necessary for conducting the test, both in the laboratory and in the field.
