Sensidyne Mercury Vapor Gas Detection Tubes, 0.1 - 10 mg/m3,  Tube 142S

Sensidyne Methyl Alcohol Gas Detection Tubes, 0.05 - 6%,  Tube 119SA

Sensidyne Methyl Bromide Gas Detection Tubes, 3 - 70 g/m3, Tube 157JS

Sensidyne Methyl Bromide Gas Detection Tubes, 10 - 500 ppm, Tube 157SA

Sensidyne Methyl Bromide Gas Detection Tubes, 0.4 - 80 ppm, Tube 157SB

Sensidyne Methyl Bromide Gas Detection Tubes, 0.1 - 20 ppm, Tube 157SD

Sensidyne Methyl Butyl Ketone Gas Detection Tubes, 5 - 80 ppm,  Tube 237Sc

Sensidyne Methyl Chloroform Gas Detection Tubes, 15 - 400 ppm, Tube 160S

Sensidyne Methyl Ethyl Ketone Gas Detection Tubes, 0.01 - 1.4%,  Tube 139SB

Sensidyne Methyl Iodide Gas Detection Tubes, 0.4 - 50 ppm,  Tube 176SC

Sensidyne Methyl Mercaptan Gas Detection Tubes, 5 - 140 ppm, Tube 164SA

Sensidyne Methyl Mercaptan Gas Detection Tubes, 50 - 1000 ppm, Tube 164SH

Sensidyne Methyl Styrene Gas Detection Tubes, 10 - 500 ppm, Tube 193S

Sensidyne Monoethanol Amine Gas Detection Tubes, 0.5 - 50 ppm,  Tube 224SA

Sensidyne Morpholine Gas Detection Tubes, 2 - 22 ppm,  Tube 105SDc

Sensidyne Methyl Cyclohexane Gas Detection Tubes, 100 - 1600 ppm,  Tube 113SBc

Sensidyne Methyl Ethyl Ketone Gas Detection Tubes, 0.05-5.0 %, Tube 122SAc

Sensidyne Methyl Isobutyl Ketone Gas Detection Tubes, 0.01-0.6 %, Tube 122SAc

Sensidyne Methyl Acetate Gas Detection Tubes, 0.1 - 3.0%,  Tube 111SAc

Sensidyne Maleic Anhydride Gas Detection Tubes, 0.2 - 10 PPM. Tube 216S

Sensidyne Methacrylic Acid Gas Detection Tubes, 1 - 50 PPM. Tube 216Sc

Sensidyne Methyl Amine Gas Detection Tubes, 1 - 20 PPM. Tube 227S

Sensidyne Methanol in LP Gas Detection Tubes, 100 - 1000 ppmv,  Tube 119LPG

Sensidyne Methyl Alcohol Gas Detection Tubes, 20 - 1000 ppm,  Tube 119U

Sensidyne Methyl Cyclohexanone Gas Detection Tubes, 2 - 100 ppm, Tube 198U

Sensidyne Methyl Cyclohexanol Gas Detection Tubes, 5 - 200 ppm, Tube 199U

Sensidyne Methyl Ethyl Ketone Gas Detection Tubes, 20 - 1500 ppm, Tube 139U

Sensidyne Methyl Iodide Gas Detection Tubes, 500 - 15000 ppm,  Tube 176UH

Sensidyne Methyl Isobutyl Ketone Gas Detection Tubes, 5 - 300 ppm, Tube 155U

Sensidyne MITC (Methyl Isothiocyanate) Gas Detection Tubes, 200 - 10000 ppm,  Tube 245UH

Sensidyne MITC (Methyl Isothiocyanate) Gas Detection Tubes, 0.3 - 22 ppm,  Tube 245UL

Sensidyne MITC (Methyl Isothiocyanate) Gas Detection Tubes, 10 - 1500 ppm, Tube 245UM

Sensidyne Methyl Mercaptan Gas Detection Tubes, 0.5 - 10 ppm,  Tube 130U

Sensidyne Methyl Cellosolve Gas Detection Tubes, 5 - 500 PPM, Tube 190U

Sensidyne Methyl Cellosolve Acetate Gas Detection Tubes, 3 - 120 PPM,  Tube 190Uc

Sensidyne Methyl Methacryolate Gas Detection Tubes, 10 - 160 PPM, Tube 184S

Sensidyne Methyl Propyl Ketone Gas Detection Tubes, 20 - 1500 PPM. Tube 139U

Sensidyne Mesityl Oxide Gas Detection Tubes, 5 - 100 PPM. Tube 190Uc