Hydrogen Sulfide Breakthrough Indicator Sticker for Sewer Manhole Filters

The Hydrazine BTIS SMF (PN: 148 SS) is a qualitative (yes/no) colorimetric indicator for the saturation and end-of-service life of sewer manhole filters. The indicator is designed to provide real-time indication of the breakthrough of hydrogen sulfide gas. Rain and drainage water have no effect in the performance of the BTIS SMF.