Gastec Phosphine Gas Detector Tubes. Options:

Phosphine Gas Detector Tubes (SEI)
Detection Range: 0.05-9.8 ppm
10 tubes, 10 tests per box
P/N 7LA

Phosphine Gas Detector Tubes
Detection Range: 0.15-5 ppm
10 tubes, 10 tests per box
P/N 7L

Phosphine Gas Detector Tubes
Detection Range: 2.5 - 100 ppm
10 tubes, 10 tests per box
P/N 7

Phosphine Gas Detector Tubes
Detection Range: 2.5-1000 ppm
10 tubes, 10 tests per box
P/N 7J

Phosphine Gas Detector Tubes
Detection Range: 200 - 2500 ppm
10 tubes, 10 tests per box
P/N 7H