Premise: (2) preparation of a quality assurance plan with data quality objectives; (3) preparation of written descriptions of laboratory standard operating procedures (SOP's) for test organism culturing, toxicity testing, instrument calibration, sample chain-of-custody, laboratory sample tracking system, etc.; and (4) provision of adequate, qualified technical staff and suitable space and equipment to assure reliable data.
Hypothesis: Adequate qualified technical staff, suitable space are all required to assure reliable data. 
Label: entailment