When submitting a shipment of bulk material to quality analysis, the sophistication and accuracy of the laboratory test equipment counts for little if the primary sample is not precisely representative of the total consignment.
The value of an entire bulk cargo shipment is frequently determined by testing a sample collected by a mechanical sampling system. If the sampling device is inaccurate or inconsistent the cargo may be over- or under-valued. Thus costly, wrong decisions can be based on incorrect information. It is therefore vital that mechanical samplers should be capable of obtaining a single, truly representative sample from a large tonnage of bulk material....
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