Even the best stack testers can get tripped up by the nuances of Method 30B's QA/QC requirements.
If you're part of the CleanAir network, download the referenced spreadsheet HERE.

seen from United States

seen from United States
seen from Italy

seen from France
seen from France
seen from France
seen from United States

seen from France
seen from France
seen from Italy

seen from France
seen from Russia

seen from Malaysia
seen from Germany

seen from Malaysia

seen from Netherlands
seen from Vietnam
seen from China
seen from Russia
seen from Australia
Even the best stack testers can get tripped up by the nuances of Method 30B's QA/QC requirements.
If you're part of the CleanAir network, download the referenced spreadsheet HERE.