The sand equivalent test indicates the relative proportions of clay-like fines in granular soils and aggregates. The manual shaker works best for use on the job site to give more uniform shaking action. Uniform shaking action pushes the top frame by a simple stroke of the hand. The portable unit features a removable wooden case. As well as two separate electronic timers to increase accuracy and ease of operation compared to a spring-type timer. The consistent, repeatable oscillation of the apparatus eliminates operator-cause variation. Sand equivalent stock solution works with distilled water in the ratio of 85ml solution per gallon of water. Made from anhydrous calcium chloride, glycerine, and formaldehyde.
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