Indoor environmental testing requirements

Claim
Indoor environmental testing requirements can be broadly summarized as five aspects.
(1) Representative: sampling time, sampling sites and sampling methods must comply with the relevant provisions of the collection of samples to reflect the overall situation.
(2) Integrity: The main emphasis on the implementation of the test plan should be complete, that is, the number of samples must be planned and the integrity of the measured data, systematic and continuity.
(3) comparability: the requirements of the laboratory or the same laboratory on the same sample of the determination of the results comparable to each other.
(4) Accuracy: the measured value and the true value of the degree of compliance.
(5) Precision: The measured values ??have good reproducibility and reproducibility.