Grab sampling - 0-D and

The accuracy of many analytical data reports is a mirage because unwitting negligence and false cost consciousness have ensured that a sample . .. taken with cursory swiftness has been examined with costly precision. Kaye, Illinois Institute of Technology (1967)  

4 Correct process sampling increment delimitation/extraction 

The very same faults are associated with flow in vertical pipeline segments, if based on the same valve designs. 

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