PAT Programs is pleased to announce a change to the IHPAT Diffusive Sampler concentration range for Benzene. The change will be effective during the IHPAT Diffusive Round 222. Participants should expect samples between 1 ppm and 32 ppm. All other contaminant ranges remain unchanged.
If you have any questions or concerns, please address them to David Clawson at firstname.lastname@example.org.