Nitrogen Dioxide is trapped on glass fiber filter impregnated with triethanolamine. The resulting nitrite ions are quantitated by colorimetry or ion chromatography.
This badge does not collect Nitric Oxide.
This badge DOES collect Sulfur Dioxide. The sampling rate of 16.7 mL/min has been lab verified. However this chemical is not part of AT Labs accreditation yet. Other laboratories can use and analyze this badge.