6.1 The use of test organisms taken from the receiving water has strong appeal, and would seem to be a logical approach.
8.2 Using test organisms from the receiving water lacks support and doesn't make sense as a general rule.
mnli hypothesis: 8.2 Using test organisms from the receiving water lacks support and doesn't make sense as a general rule. premise: 6.1 The use of test organisms taken from the receiving water has strong appeal, and would seem to be a logical approach.