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เอกสารมาตรฐาน
สหรัฐอเมริกา
APHA
SMWW 5020
Aggregate Organic Constituents in Water and Wastewater: Quality Assurance/Quality Control
2023
6
Standard methods for the examination of water and wastewater (543.3 APHA 24th ed. Ref. Treatises&monographs FL2)
Quality assurance (QA) is a laboratory operations program that specifies the measures required to produce defensible data with known precision and accuracy. This program is defined in a QA manual, written procedures, work instructions, and records. The manual should include a policy that defines the statistical level of confidence used to express data precision and bias, as well as method detection levels (MDLs) and reporting limits...