Nextteq Formaldehyde Gas Detector Tubes. Options:

Formaldehyde Detector Tube
Measuring Range 20-1500 ppm
5 tubes per box
Dehumidifier tube included
P/N NX157H

Formaldehyde Detector Tube
Measuring Range 1-35 ppm
5 tubes per box
Pretreat Tube included
P/N NX157M

Formaldehyde Detector Tube
Detection Range: 0.05-2.0ppm, 0.1 - 4.0ppm
10 tubes, 10 tests
P/N NX157L