New designed sieve shaker

By way of comparison, the British Standard method for determining the fineness involves

the determination of the specific surface area, which does not directly give a measurement of particle size. The British Standard test is a difficult and laborious test to perform, and it has been found that a time of at least 45 minutes is necessary to complete the test. In this country, as an alternative to determining the specific surface area, wet sieving of fine materials has been adopted as a more reproductable test method, but a time of 25 minutes is needed to complete a wet sieving test, the duration of this period of time being mainly due to the time necessary subsequently to dry the materials before weighing. It has been proposed to utilise a rapid drying method, to reduce the time necessary to conduct this test, but it has been found that this rapid drying method eventually results in damage being done to the sieve shaker.

New designed sieve shaker

By: eric

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