How many Field Blank samples should we collect 1, 2, or none, when we do Industrial Hygiene Air testing?
There are 2 sides to the story:
Legal Way to do Air Sampling. To comply with the law, you need to follow the standard method. If the method says to use 2 blanks, you need to use 2 blanks. If you followed the method, then nobody can question your results, because you followed the standard method.
Analytical Limitations. Some tests cannot be performed without the blank samples. Usually, those are gravimetric tests, HPLC tests, and UV-VIS methods. Without the field blank sample, the results will be biased. At the same time, other tests give good quality results with or without blank. In the real world:
– Our clients, who want their results to be legally sound, always collect at least one field blank sample.
– The clients who are short on money, give us the samples within a blank one, but in our opinion, the quality of the results is compromised.
If you need to discuss your future project please contact us by email.
