Observations on the Sampling and Testing of Sands for Making Colourless Glass

JSGT 1941 V25 T086 T094

The author records his experience relating to the sampling and testing of sand. He prefers, in sampling sand from a new source, to base the test on 100 tons and to take 1 cwt from it as a sample; or 10 lb per wagon. Sampling with the sand moist is advocated. The tests commented on include sieving, determination of clay content, general analysis and special methods for iron oxide determination. It is shown that, under careful conditions, the use of titanous chloride, thioglycolic acid, and potassium thiocyanate as reagents for the determination of small amounts of iron oxide all lead to satisfactory results, although the author uses and prefers titanous chloride.

A. Sherlock