Hi Gary:
Thanks for the info. I will definitely make a call to OFMEM. I am wondering if the investigator meant solely relying on an accelerant detector machine.
I was thinking of using it for initial detection and then taking samples if something is discovered. Taking samples (in our municipality, in conjunction with the police) and involving the forensics guys (and the provincial Centre for Forensic Sciences) is obviously the best way to use the information as evidence. Using an accelerant detector would only be a pre-cursor to actually taking samples.
I would not expect to rely only on information from an accelerant detector, especially if we purchase a model that does not require/involve calibration.