All minerals possess such resistance to a greater or lesser degree. The Mohs scale of hardness has been universally adopted to test this physical property. The scale rates mineral hardness from one to 10, with talc rating one and diamonds rating 10. This scale is strictly relative and non-linear. The cutting rate can be determined by experimental test blast areas to evaluate the rate of production achieved on any given surface.
Bulk density is the weight of the abrasive per unit volume, typically pounds per cubic foot.
A low or high pH, therefore, signifies the presence of acid or alkaline salts. The presence of these salts beneath the coating film may ultimately affect coating performance. CDS Group of Princeton, NJ, is a joint marketing venture of Church and Dwight Co. and Schmidt Manufacturing. According to CDS, the blast cleaning media is a patented, specially formulated crystalline powder whose main ingredient is sodium bicarbonate. The blast abrasive itself is modified with flow agents to minimize caking in the blast pot.