ISO 11127-6:1993

The procedure includes weighing a test portion of 100 g of the sample, adding 100 ml of the conductivity water, shaking, allowing to stand, filtering if necessary, transferring sufficient of the liquid to fill the conductivity cell of the conductivity-measuring bridge, and measuring the conductivity of the solution. Annex A gives information on the international standards series for non-metallic blast-cleaning abrasives ISO 11126 and ISO 11127.