Gastec Formaldehyde Gas Detector Tubes. Options:

Formaldehyde Detector Tubes
Detection Range: 0.05-1 ppm
10 tubes, 10 tests per box
P/N 91LL

Formaldehyde Detector Tubes
Detection Range: 0.1-40 ppm
tubes, 10 tests per box
P/N 91L

Formaldehyde Detector Tubes
Detection Range: 2-100 ppm
5 detector tubes, 5 pre tubes per box
P/N 91

Formaldehyde Detector Tubes
Detection Range: 8-6400 ppm
10 tubes, 10 tests per box
P/N 91M