Sample Reduction Using a Mechanical Splitter

The use of a mechanical splitter is considered the best method to reduce the gross sampling of the aggregate. The mechanical splitter splits the sample into two halves as the material passes through the spaces between the bars in the splitter. Equal numbers of each particle size go into each half of the sample, thus leaving a less sample representative of the total collected sample.

Sample Reduction Using Mechanical Splitter
Sample Reduction Using Mechanical Splitter


  1. Adjust the splitter bar so that the bar opening is approximately 50% larger than the maximum particle size of the material to be split.
  2. Place the mechanical splitter on a flat surface and place the pan under the splitter in such a way that all particles moving in both directions are captured.
  3. Screw the sample evenly into the hopper.
  4. Fully open the hopper and allow the material to fall freely through the splitter.
  5. If wet particles stick to the inside of the splitter, tap the splitter gently with a rubber hammer to loosen them.
  6. To ensure that the sample is not separated during sampling, place both halves of the sample back into the hopper and repeat the splitting process.
  7. After a split second, the two receiving pans will have roughly the same amount of ingredients. Only one pan is put back into the hopper and the splitting process is repeated until the desired size sample is obtained. Efficient manipulation of the splitter allows creating a sample of almost any size that is representative of the material still in stock.

Er. Mukesh Kumar

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Er. Mukesh Kumar is Editor in Chief and Co-Funder at Civil Engineering Website. Mukesh Kumar is a Bachelor in Civil Engineering From MIT. He has work experience in Highway Construction, Bridge Construction, Railway Steel Girder work, Under box culvert construction, Retaining wall construction. He was a lecturer in a Engineering college for more than 6 years.