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The grain size characteristics of soils that are predominantly coarse grained are evaluated by a sieve analysis. A soil test sieve is prepared by stacking test sieves one above the other with the largest opening at the top followed by sieves of successively smaller openings and a catch pan at the bottom. 

A sample of dry soil is poured onto the top sieve, the nest is covered, and it is then shaken by hand or mechanical sieve shaker until each particle has dropped to a sieve with openings too small to pass, and the particle is retained. The cumulative weight of all material larger than each sieve size is determined and divided by the total sample weight to obtain the percent retained for that sieve size, and this value is subtracted from 100% to obtain the percent passing that sieve size.

WUZHOUKINGDA provides test sieves for soil sampling and classification, aggregates and granular materials sampling. We keep an extensive offering of sizes and mesh/frame configurations in stock and ready to ship.  Material configurations of WUZHOUKINGDA sieves is mianly used for stainless frame and mesh. The stainless models have a longer life expectancy and mesh that resists sagging. To aid in stackability, our sieve frames are constructed with seamless stainless steel with extended skirts and rigid rolled edges