Fred,
Glad you made it over here.
I'd contact PV and NACHI if I bought a product that does not perform as advertised or as you require.
I don't do mold and wouldn't recommend sampling.
I like to sleep and wake up with a clear conscious.
Money would be better spent locating the moisture/water source and stopping that then making the necessary repairs.
Read EPA
Investigating, Evaluating, and Remediating Moisture and Mold Problems | Mold Remediation in Schools and Commercial Buildings | Mold | Indoor Air Quality | Air | US EPA
and contact this gentlemen for further reporting information.
Caoimhín P. Connell
Forensic Industrial Hygienist
Forensic Industrial Hygiene