Riffle-type sample splitters divide or halve dry materials such as cement, gravel, powdered ores, coal, coke, sand, soils, etc. Material poured into the hopper is divided into two equal portions by a series of chutes that discharge the material alternately in opposite directions into separate pans.STM B215, ASTM C136, ASTM C702, ASTM C778, ASTM D421, ASTM D424, ASTM D457, ASTM D806, AASHTO T27, AASHTO T144, AASHTO T248 -
Comes in two variations: 
 
Small Sample Splitters .250" material size, 14 (.375"W) chutes, 6.75"W x 8" hopper size includes 4 pans
 
Small Sample Splitters.333" material size, 14 (.500"W) chutes, 6.75"W x 11" hopper size includes 4 pans