Gastec’s patented gas sampling pumps offer smooth, precise measurements with no risk of partial samples. No other manufacturer has more detector tubes certified by the U.S. Safety Equipment Institute (SEI) than Gastec. Gastec products are manufactured in ISO-9001 certified facilities.
Pre-calibrated, direct-read detector tubes offer distinct lines of demarcation for easier viewing and require no interpretation, dual scales, or colour charts. With multiple detection limits for many chemicals the tubes can measure even trace levels of contaminants.
Additionally, Gastec’s higher maximum detection limits can provide a more accurate measurement of contamination. Offering some of the broadest operating temperature ranges available, the tubes can be used in virtually any environment—from 0°C to 40°C (32°F to 104°F).
Not sure how to read your Gastec detector tubes? Check out the guide here.
Gastec Detector Tube Listing
| Gas or Vapour to be Measured | Measuring Range (ppm) | Gastec Tube No. |
|---|---|---|
| Acetaldehyde | 1-20 | 92L |
| Acetaldehyde | 5-750 | 92 |
| Acetaldehyde | 2.5-100 | 92M |
| Acetaldehyde (Dosi tube) | 1.2-360 | 152D |
| Acetaldehyde (Dosi tube) | 4-1,200 | 151D |
| Acetaldehyde (Dosi tube) | 0.1-20 | 91D |
| Acetic acid | 1-100 | 81 |
| Acetic acid | 0.125-25 | 81L |
| Acetic acid (Dosi tube) | 0.5-100 | 81D |
| Acetic anhydride | 0.15-6 | 81L |
| Acetic anhydride | 0.6-15 | 81 |
| Acetic anhydride (Dosi tube) | 0.3-60 | 81D |
| Acetone | 50-12,000 | 151L |
| Acetone | 0.05-2% | 151 |
| Acetone (Dosi tube) | 5-1,500 | 151D |
| Acetone (Dosi tube) | 1.4-420 | 152D |
| Acetone (for Automatic Air Sampling Pump) | 25-800 | 151TP |
| Acetone cyanohydrin | 2.88-69 | 12L |
| Acetonitrile | 3-180 | 52 |
| Acetylene | 32.5-1,040 | 172 |
| Acetylene | 0.075-3.6% | 103 |
| Acetylene | 0.05-4% | 171 |
| Acid gases | 1-80 | 80 |
| Acrolein | 3.3-800 | 93 |
| Acrylic acid | 0.45-18 | 81L |
| Acrylic acid | 2-50 | 81 |
| Acrylonitrile | 2-360 | 191 |
| Acrylonitrile | 0.1-18 | 191L |
| Acrylonitrile | 0.06-1.44% | 102L |
| Acrylonitrile(for Automatic Air Sampling Pump) | 0.2-12.6 | 191TP |
| Aliphatic hydrocarbons | 6-3,000 | 140 |
| Allyl amine | 8.5-170 | 180 |
| Allyl amine | 0.4-8 | 180L |
| Allyl chloride | 3.2-48 | 131L |
| Allyl chloride | 0.1-3.4% | 101L |
| Allyl Isothiocyanate | 5-200 | 149 |
| Amines | 5-100 | 180 |
| Amines | 0.5-10 | 180L |
| Ammonia | 2.5-200 | 3La |
| Ammonia | 0.05-3.52% | 3HM |
| Ammonia | 0.5-78 | 3L |
| Ammonia | 10-1000 | 3M |
| Ammonia | 1.5-30 | 180 |
| Ammonia | 0.2-32% | 3H |
| Ammonia (Dosi tube) | 0.1-10 | 3DL |
| Ammonia (Dosi tube) | 2.5-1,000 | 3D |
| n-Amyl acetate | 10-200 | 147 |
| Aniline | 1.25-60 | 181 |
| Aromatic hydrocarbons | 0.4-200 | 120 |
| Arsine | 0.04-10 | 19LA |
| Benzaldehyde | 4-92 | 91L |
| Benzene | 0.03-0.6% | 171 |
| Benzene | 0.2-66 | 121SP |
| Benzene | 2-312 | 121S |
| Benzene | 2.5-120 | 121 |
| Benzene | 1-100 | 121SL |
| Benzene | 0.1-65 | 121L |
| Benzene (Dosi tube) | 2.4-600 | 122DL |
| Benzene (for Automatic Air Sampling Pump) | 250-3,000µg/m3 | 121P |
| Benzyl bromide | 10-100 | 136L |
| Benzyl chloride | 1.6-20 | 132L |
| Boron trichloride | 0.5-20 | 12L |
| Bromide Ion in Solution | 24-480mg/L | 221LL |
| Bromide Ion in Solution | 55-2,200mg/L | 221L |
| Bromine | 0.05-0.8 | 8La |
| Bromoform | 1-50 | 136L |
| 1,3-Butadiene | 50-800 | 174 |
| 1,3-Butadiene | 2.5-100 | 174L |
| 1,3-Butadiene | 0.5-5 | 174LL |
| 1,3-Butadiene (Dosi tube) | 1.3-200 | 174D |
| Butane | 25-1,400 | 104 |
| Butane | 0.035-1.68% | 103 |
| 1-Butanol | 10-150 | 114 |
| 2-Butanol | 5-150 | 115 |
| Butyl acetate | 0.05-0.8% | 142 |
| Butyl acetate | 10-300 | 142L |
| Butyl acrylate | 7-210 | 142L |
| tert-Butyl alcohol | 0.05-1.2% | 102L |
| tert-Butylamine | 5.5-110 | 180 |
| n-Butyl bromide | 1-43.2 | 136LA |
| n-Butyl bromide | 10-100 | 136L |
| n-Butyl bromide | 24-360 | 136H |
| Butyl mercaptan | 0.16-12.8 | 70L |
| tert-Butyl mercaptan | 2.5-150mg/m3 | 75 |
| tert-Butyl mercaptan | 0.1-8 | 70L |
| tert-Butyl mercaptan | 0.5-30mg/m3 | 75L |
| Butylamine | 0.55-11 | 180L |
| Butylamine | 8-160 | 180 |
| Di-n-butylamine | 0.4-8 | 180L |
| Di-n-Butylamine | 5-100 | 180 |
| Butyric acid | 0.325-13 | 81L |
| Butyronitrile | 6-180 | 191L |
| Carbon dioxide | 300-5,000 | 2LL |
| Carbon dioxide | 2.5-40% | 2HH |
| Carbon dioxide | 0.5-20% | 2H |
| Carbon dioxide | 100-4,000 | 2LC |
| Carbon dioxide | 0.13-6% | 2L |
| Carbon dioxide (Airtec tube) | 200-3,000 | 2AG |
| Carbon dioxide (Airtec tube) | 250-3,000 | 2A |
| Carbon dioxide (Dosi tube) | 0.02-12% | 2D |
| Carbon dioxide (Injection tube) | 10-100% | 2HT |
| Carbon disulphide | 0.63-100 | 13 |
| Carbon disulphide | 20-4,000 | 13M |
| Carbon disulphide | 0.1-8.1 | 13L |
| Carbon monoxide | 8-1,000 | 1La |
| Carbon monoxide | 1-30 | 1LC |
| Carbon monoxide | 2.5-2,000 | 1L |
| Carbon monoxide | 1-50% | 1HH |
| Carbon monoxide | 0.05-4% | 1M |
| Carbon monoxide | 0.1-10% | 1H |
| Carbon monoxide | 5-50 | 1LL |
| Carbon monoxide | 5-100 | 1LKC |
| Carbon monoxide | 5-600 | 1LK |
| Carbon monoxide | 25-2,000 | 1LM |
| Carbon monoxide (Airtec tube) | 5-50 | 1A |
| Carbon monoxide (Dosi tube) | 1.04-2,000 | 1D |
| Carbon monoxide (Dosi tube) | 0.4-400 | 1DL |
| Carbon tetrachloride | 0.25-12 | 134L |
| Carbon tetrachloride | 0.5-60 | 134 |
| Carbonyl sulphide | 2-125 | 21LA |
| Carbonyl sulphide | 5-200 | 21 |
| Chloride Ion in Solution | 10-200mg/L | 221LL |
| Chloride Ion in Solution | 25-1,000mg/L | 221L |
| Chlorine | 0.7-14 | 80 |
| Chlorine | 0.1-16 | 8La |
| Chlorine | 0.25-10% | 8HH |
| Chlorine | 25-1000 | 8H |
| Chlorine | 2.4-240 | 132D |
| Chlorine | 0.025-2 | 8LL |
| Chlorine (Dosi tube) | 0.08-100 | 8D |
| Chlorine (for Automatic Air Sampling Pump) | 0.05-0.6 | 8TP |
| Chlorine dioxide | 0.1-10 | 23M |
| Chlorine dioxide | 0.025-1.2 | 23L |
| Chlorine dioxide | 25-250 | 8H |
| Chlorine dioxide | 0.3-4.8 | 8La |
| 2-Chloro-1,1,1,2-tetrafluoroethane (R124) | 45-1,800 | 51 |
| Chloro bromomethane | 18-270 | 136H |
| Chloro bromomethane | 0.7-12.6 | 136LA |
| Chlorobenzene | 2-500 | 126 |
| Chlorobenzene | 0.5-43 | 126L |
| Chlorobromomethane | 22-110 | 135 |
| Chlorobromomethane | 11-110 | 136L |
| Chlorocyclohexane | 50-1,200 | 102L |
| Chlorodifluoromethane (R22) | 2.5-135 | 51L |
| Chlorodifluoromethane (R22) | 25-1,000 | 51 |
| Chlorodifluoromethane (R22) | 0.1-2.4% | 51H |
| Chloroform | 0.3-4.5 | 137LL |
| Chloroform | 4-400 | 137 |
| Chloroform | 0.5-30 | 137LA |
| Chloropicrin | 0.045-22 | 233 |
| Chloropicrin | 2.5-60 | 134 |
| Chromium (VI) Ion in Solution | 0.5-50mg/L | 273 |
| Copper Ion in Solution | 1-20mg/L | 284 |
| m-Cresol | 1-25 | 61 |
| o-Cresol | 0.4-62.5 | 61 |
| p-Cresol | 1-25 | 61 |
| Cumene | 2-100 | 122L |
| Cumene (Dosi tube) | 3.4-850 | 122DL |
| Cyclohexane | 60-1,440 | 102L |
| Cyclohexane | 0.015-1.2% | 102H |
| Cyclohexanol | 5-100 | 118 |
| Cyclohexanone | 10-470 | 91L |
| Cyclohexanone | 2-75 | 154 |
| Cyclohexene | 0.01-0.8% | 151 |
| Cyclohexylamine | 7-140 | 180 |
| Cyclohexylamine | 0.5-10 | 180L |
| Cymene | 5.6-224 | 141L |
| Decane | 200-6,000 | 105 |
| Diacetone alcohol | 2.5-100 | 154 |
| Diacetyl | 25-1,500 | 92 |
| Diborane | 0.02-5 | 22 |
| Dibromomethane | 5-50 | 136L |
| 1,1-Dibromoethane | 7-70 | 136L |
| 1,2-Dibromoethane | 14-210 | 136H |
| 1,2-Dibromoethane | 8-80 | 136L |
| m-Dichlorobenzene | 2.5-300 | 127 |
| o-Dichlorobenzene | 2.5-300 | 127 |
| p-Dichlorobenzene | 2.5-300 | 127 |
| p-Dichlorobenzene (for Automatic Air Sampling Pump) | 100-3,000µg/m3 | 127P |
| 1,1-Dichloro-1-fluoroethane (R141b) | 10-1,000 | 51 |
| 1,1-Dichloro-1-fluoroethane (R141b) | 1.1-22 | 51L |
| Dichlorodifluoromethane (R12) | 11-440 | 51 |
| Dichlorodifluoromethane (R12) | 1.8-97 | 51L |
| Dichlorodifluoromethane (R12) | 325-7,800 | 51H |
| 1,1-Dichloroethane | 90-450 | 135 |
| 1,2-Dichloroethylene | 6-600 | 132D |
| 1,2-Dichloroethylene | 80-800 | 132HA |
| 1,2-Dichloroethylene | 0.375-6 | 132LL |
| 1,2-Dichloroethylene | 5-250 | 139 |
| trans-1,2-Dichloroethylene (Dosi tube) | 3.9-600 | 174D |
| Dichloropentafluoropropane (R225) | 1.4-28 | 51L |
| Dichloropentafluoropropane (R225) | 20-800 | 51 |
| 1,3-Dichloropropene | 0.5-10 | 131La |
| 1,3-Dichloropropene | 45-450 | 132HA |
| 1,2-Dichloro-1,1,2,2-tetrafluoroethane (R114) | 20-800 | 51 |
| 1,2-Dichloro-1,1,2,2-tetrafluoroethane (R114) | 475-11400 | 51H |
| 1.2-Dichloro-1,1,2,2-tetrafluoroethane (R114) | 1.8-97 | 51L |
| 2,2-Dichloro-1,1,1-trifluoroethane (R123) | 14-1,600 | 51 |
| 2,2-Dichloro-1,1,1-trifluoroethane (R123) | 1.4-28 | 51L |
| Diethyl benzene | 2-150 | 122L |
| Diethylamine | 5.5-110 | 180 |
| Diethylamine | 0.45-9 | 180L |
| Diethylaminoethanol | 0.6-12 | 180L |
| Diethylenetriamine | 0.95-19 | 180L |
| Diethylethanolamine | 6-120 | 180 |
| Diisobutyl ketone | 0.58-29 | 91L |
| Diisobutyl ketone | 0.2-1% | 102L |
| Diisobutylene | 45-540 | 121 |
| Diisopropyl benzene | 10-400 | 141L |
| N,N-Dimethyl acetamide | 1.5-240 | 184 |
| Diisopropylamine | 0.3-6 | 180L |
| Diisopropylamine | 5-100 | 180 |
| Dimethyl disulphide | 0.3-6 | 53 |
| N,N-Dimethyl formamide | 0.8-90 | 183 |
| Dimethyl ethanolamine | 6.5-130 | 180 |
| Dimethyl sulphide | 0.25-10 | 53 |
| Dimethylamine | 1.2-19.2% | 3H |
| Dimethylamine | 5.5-110 | 180 |
| Dimethylamine | 0.45-9 | 180L |
| Dimethylamine (Dosi tube) | 1.9-750 | 3D |
| 2-Dimethylaminoethanol | 0.65-13 | 180L |
| Dimethylaminopropylamine | 0.6-12 | 180L |
| Dimethylaminopropylamine | 8-160 | 180 |
| N,N-Dimethylaniline | 2.5-30 | 181 |
| N,N-Dimethylethylamine | 0.3-6 | 180L |
| N,N-Dimethylethylamine | 4-80 | 180 |
| N,N-Dimethylethylamine (Dosi tube) | 4-1600 | 3D |
| Dimethylhydrazine | 0.1-2 | 185 |
| 1,4-Dioxane | 25-140 | 159 |
| 1,4-Dioxane | 0.1-6% | 163 |
| Dipropylamine | 4-80 | 180 |
| Dipropylamine | 0.35-7 | 180L |
| Divinyl benzene | 1-15 | 124L |
| Divinyl methoxysilane | 2.5-40 | 113L |
| Enflurane | 20-1200 | 51 |
| Enflurane | 25-145 | 51L |
| Epichlorohydrin | 1.2-120 | 163L |
| Ethanol | 0.01-7.5% | 112 |
| Ethanol | 50-2,000 | 112L |
| Ethanol (Dosi tube) | 100-25,000 | 112D |
| Ethanolamine | 1.95-39 | 180L |
| Ethyl acetate | 0.1-1.5% | 141 |
| Ethyl acetate | 20-800 | 141L |
| Ethyl acrylate | 8-320 | 141L |
| Ethyl benzene | 1-70 | 122L |
| Ethyl benzene | 11-330 | 122 |
| Ethyl benzene (Dosi tube) | 2.8-700 | 122DL |
| Ethyl benzene (for Automatic Air Sampling Pump) | 110-2,750µg/m3 | 122P |
| p-Ethyl benzylchloride | 2.5-50 | 131La |
| Ethyl bromide | 2.5-200 | 136L |
| Ethyl chloride | 15-150 | 138 |
| Ethyl chloroformate | 7-140 | 131La |
| Ethyl ether | 10-1,200 | 161L |
| Ethyl ether | 0.04-1% | 161 |
| Ethyl mercaptan | 100-3,800 | 71H |
| Ethyl mercaptan | 0.5-120 | 70 |
| Ethyl mercaptan | 0.2-75 | 72L |
| Ethyl mercaptan | 0.5-120 | 72 |
| Ethyl mercaptan | 0.1-8 | 70L |
| N-Ethyl morpholine | 0.3-6 | 180L |
| N-Ethyl morpholine | 5-100 | 180 |
| Ethylamine | 0.45-9 | 180L |
| Ethylamine | 5-100 | 180 |
| Ethylene | 0.35-16.8% | 103 |
| Ethylene | 0.2-100 | 172L |
| Ethylene | 0.1-2% | 171 |
| Ethylene | 25-1680 | 172 |
| Ethylene (Dosi tube) | 1.56-240 | 174D |
| Ethylene chlorohydrin | 20-200 | 111L |
| Ethylene dibromide | 14-210 | 136H |
| Ethylene dibromide | 8-80 | 136L |
| Ethylene dichloride | 104-1,040 | 135L |
| Ethylene dichloride | 400-2,000 | 135 |
| Ethylene glycol | 10-100mg/m3 | 165L |
| Ethylene glycol monobutyl ether | 30-1,000 | 113L |
| Ethylene glycol monobutyl ether | 23-230 | 113LL |
| Ethylene glycol monoethyl ether | 62.5-1,000 | 113L |
| Ethylene glycol monoethyl ether | 15.2-152 | 113LL |
| Ethylene glycol monoethyl ether acetate | 6-96 | 113L |
| Ethylene glycol monomethyl ether | 20-200 | 113LL |
| Ethylene glycol monomethyl ether | 15-900 | 113L |
| Ethylene glycol monomethyl ether acetate | 20-1,300 | 113L |
| Ethylene oxide | 0.05-3% | 163 |
| Ethylene oxide | 0.4-350 | 163L |
| Ethylene oxide | 0.1-10 | 163LL |
| Ethylene oxide (for Automatic Air Sampling Pump) | 1-50 | 163TPM |
| Ethylene oxide (for Automatic Air Sampling Pump) | 0.1-5 | 163TP |
| Ethylenediamine | 0.9-18 | 180L |
| Ethylenediamine | 14-280 | 180 |
| Fluorine | 1.25-50 | 17 |
| Formaldehyde | 8-6,400 | 91M |
| Formaldehyde | 0.05-1 | 91LL |
| Formaldehyde | 0.1-40 | 91L |
| Formaldehyde | 2-100 | 91 |
| Formaldehyde (Dosi tube) | 0.1-20 | 91D |
| Formaldehyde (for Automatic Air Sampling Pump) | 0.01-1.75 | 91TP |
| Formaldehyde (for Automatic Air Sampling Pump) | 0.01-0.80 | 91PL |
| Formaldehyde (for Automatic Air Sampling Pump) | 0.02-1.44 | 91P |
| Formic acid | 0.5-20 | 81L |
| Formic acid | 5.2-130 | 81 |
| Formic acid (Dosi tube) | 0.55-110 | 81D |
| Free Residual Chlorine | 0.1-10mg/L | 222 |
| Furfural | 2-30 | 154 |
| Furfural (Dosi tube) | 0.3-60 | 91D |
| Gasoline (Petrol) | 30-2,000 | 101L |
| Gasoline (Petrol) | 0.1-2% | 1M |
| Gasoline (Petrol) | 0.015-1.2% | 101 |
| H2S + SO2 (Total Quantification) | 0.02-8% | 45H |
| H2S,SO2 (Separate Quantification) | H2S: 1.25-120 | 45S |
| H2S,SO2 (Separate Quantification) | SO2: 0.25-20 | 45S |
| Halotane | 3-60 | 51L |
| Halothane | 240-960 | 51 |
| Halothane | 800-6,400 | 51H |
| Heptane | 30-2,000 | 101L |
| Heptane | 0.035-1.68% | 103 |
| Heptane | 90-2700 | 105 |
| Heptane | 0.015-1.2% | 101 |
| Hexamethylenediamine | 1.55-31 | 180L |
| Hexane | 80-2400 | 105 |
| Hexane | 4-1,200 | 102L |
| Hexane | 0.015-1.2% | 102H |
| Hexane | 0.025-1.2% | 103 |
| Hexane (for Automatic Air Sampling Pump) | 2-80 | 102TP |
| 2-Hexyl alcohol | 60-2,400 | 141L |
| Hexylamine | 0.65-13 | 180L |
| Hexylamine | 9-180 | 180 |
| Hydrazine | 0.05-2 | 185 |
| Hydrazine (Dosi tube) | 1.6-650 | 3D |
| Hydrocarbons (Higher class) | 100-3,000 | 105 |
| Hydrocarbons (Lower class) | 0.05-2.4% | 103 |
| Hydrogen | 0.5-2% | 30 |
| Hydrogen bromide | 0.8-16 | 15L |
| Hydrogen chloride | 1.5-30% | 8HH |
| Hydrogen chloride | 0.2-76 | 14L |
| Hydrogen chloride | 8-160 | 80 |
| Hydrogen chloride | 10-1,000 | 14M |
| Hydrogen Chloride (Dosi tube) | 1.8-180 | 132D |
| Hydrogen chloride (Dosi tube) | 1-100 | 14D |
| Hydrogen chloride (for Low Humidity) | 50-5,000 | 14R |
| Hydrogen cyanide | 0.05-1.6% | 12H |
| Hydrogen cyanide | 0.2-10 | 12LL |
| Hydrogen cyanide | 17-2400 | 12M |
| Hydrogen cyanide | 0.36-120 | 12L |
| Hydrogen cyanide (Dosi tube) | 1-200 | 12D |
| Hydrogen cyanide (for Automatic Air Sampling Pump) | 0.3-9.0 | 12TP |
| Hydrogen fluoride | 0.25-100 | 17 |
| Hydrogen fluoride | 0.05-24 | 17LL |
| Hydrogen fluoride | 0.09-72 | 17L |
| Hydrogen fluoride (Dosi tube) | 1-100 | 17D |
| Hydrogen fluoride (Dosi tube) | 2.5-250 | 14D |
| Hydrogen fluoride (for Automatic Air Sampling Pump) | 0.05-9.0 | 17TP |
| Hydrogen peroxide | 0.5-10 | 32 |
| Hydrogen peroxide (Dosi tube) | 0.5-40 | 32D |
| Hydrogen sulphide | 1-40% | 4HT |
| Hydrogen sulphide | 25-1,600 | 4HM |
| Hydrogen sulphide | 0.1-4% | 4HH |
| Hydrogen sulphide | 1-40 | 4LK |
| Hydrogen sulphide | 12.5-500 | 4M |
| Hydrogen sulphide | 1-240 | 4L |
| Hydrogen sulphide | 0.25-120 | 4LL |
| Hydrogen sulphide | 0.1-4 | 4LT |
| Hydrogen sulphide | 0.25-20% | 4HP |
| Hydrogen sulphide | 0.5-12 | 4LB |
| Hydrogen sulphide | 10-4,000 | 4H |
| Hydrogen sulphide (Dosi tube) | 0.2-200 | 4D |
| Hydrogen sulphide (for Automatic Air Sampling Pump) | 0.5-16.0 | 4TP |
| Iodine | 0.12-2.4 | 80 |
| Iodine | 0.2-12 | 9L |
| Iron Ion in Solution | 5-50mg/L | 281 |
| Isoamyl acetate | 10-200 | 148 |
| Isoamyl alcohol | 5-300 | 117 |
| Isobutane | 55-3,080 | 104 |
| Isobutane | 0.035-1.68% | 103 |
| Isobutene | 0.07-2.2% | 101L |
| Isobutyl acetate | 10-300 | 144 |
| Isobutyl acrylate | 2.6-78 | 142L |
| Isobutyl alcohol | 10-150 | 116 |
| Isooctane | 0.027-0.54% | 101 |
| Isopentane | 0.045-2.16% | 103 |
| Isophorone | 2-30 | 154 |
| Isoprene (Dosi tube) | 2.6-400 | 174D |
| Isopropyl acetate | 10-500 | 146 |
| Isopropyl alcohol | 25-800 | 113L |
| Isopropyl alcohol | 20-440 | 113LL |
| Isopropyl alcohol | 0.02-5% | 113 |
| Isopropyl alcohol (for Automatic Air Sampling Pump) | 20-400 | 113TP |
| Isopropyl amine | 5.5-110 | 180 |
| Isopropyl ether | 18-720 | 141L |
| Isopropyl ether | 0.018-0.45% | 161 |
| Isopropyl mercaptan | 10-240 | 70 |
| Isopropylamine | 0.45-9 | 180L |
| Isovaleric acid | 2-50 | 81 |
| Isovaleric acid | 0.38-15 | 81L |
| LPG (Liquified petroleum gas) | 0.02-0.8% | 100A |
| Maleic anhydride | 0.8-20 | 81 |
| Mercaptans | 0.5-120 | 70 |
| Mercaptans | 0.1-8 | 70L |
| 2-Mercaptoethanol | 0.5-7.5 | 75L |
| Mercury in Solution | 1-20mg/L | 271 |
| Mercury vapour | 0.05-13.2mg/m3 | 40 |
| Mesityl oxide | 27-1,080 | 141L |
| Methacrylic acid | 0.35-14 | 81L |
| Methacrylic acid | 1.8-45 | 81 |
| Methacrylonitrile | 0.2-32 | 192 |
| Methaldehyde | 0.065-3.25 | 91L |
| Methanol | 20-1000 | 111L |
| Methanol | 2-56 | 111LL |
| Methanol | 0.002-4.5% | 111 |
| Methanol (for Automatic Air Sampling Pump) | 20-300 | 111TP |
| 1-Methoxy-2-propanol | 50-800 | 113L |
| 1-Methoxy-2-propanol | 15.2-152 | 113LL |
| Methy ethyl ketone (Dosi tube) | 2-600 | 152D |
| Methyl acrylate | 8-320 | 141L |
| 2-Methyl allyl chloride | 2.8-55 | 131La |
| N-Methyl aniline | 3.5-42 | 181 |
| Methyl bromide | 2.5-200 | 136L |
| Methyl bromide | 0.1-3.0 | 136LL |
| Methyl bromide | 10-600 | 136H |
| Methyl bromide | 1-36 | 136LA |
| 2-Methyl-3-butenenitrile | 0.4-12 | 191L |
| Methyl chloride | 12-480 | 51 |
| Methyl chloride | 1.6-86 | 51L |
| Methyl chloroform | 0.06-1.2% | 171 |
| Methyl chloroformate | 58-1160 | 131La |
| Methyl ether | 0.03-0.85% | 161 |
| Methyl ethyl ketone | 0.02-0.6% | 152 |
| Methyl ethyl ketone | 10-384 | 152L |
| Methyl ethyl ketone | 21-1,680 | 151L |
| Methyl ethyl ketone (Dosi tube) | 0.125-25 | 91D |
| Methyl ethyl ketone (Dosi tube) | 6.5-1,950 | 151D |
| Methyl ethyl ketone (for Automatic Air Sampling Pump) | 20-300 | 152TP |
| Methyl hydrazine | 0.6-12 | 185 |
| Methyl iodide | 0.32-32 | 121L |
| Methyl iodide | 100-34,800 | 230H |
| Methyl iodide | 0.5-108 | 230 |
| Methyl isobutyl ketone | 0.05-0.6% | 153 |
| Methyl isobutyl ketone | 2.5-130 | 153L |
| Methyl isobutyl ketone (Dosi tube) | 11.5-3,450 | 151D |
| Methyl isobutyl ketone (Dosi tube) | 4-1200 | 152D |
| Methyl mercaptan | 0.35-84 | 70 |
| Methyl mercaptan | 20-2,700 | 71H |
| Methyl mercaptan | 0.1-8 | 70L |
| Methyl mercaptan | 0.25-140 | 71 |
| Methyl methacrylate | 10-500 | 149 |
| N-Methyl morpholine | 5-100 | 180 |
| N-Methyl morpholine | 0.3-6 | 180L |
| 4-Methyl pyridine | 0.38-10.5 | 182 |
| N-Methyl pyrrolidone | 50-270 | 180 |
| Methylamine | 0.5-10 | 180L |
| Methylamine | 5-100 | 180 |
| Methylamine (Dosi tube) | 0.19-19 | 3DL |
| Methylcyclohexane | 0.04-0.84% | 102H |
| Methylcyclohexanol | 5-100 | 119 |
| Methylcyclohexanone | 2-100 | 155 |
| Methylene chloride | 1-54 | 51L |
| Methylene chloride | 4-150 | 138L |
| Methylene chloride | 20-500 | 138 |
| Methylene iodide | 0.22-22 | 121L |
| Monoethanolamine | 7-140 | 180 |
| Morpholine | 9-180 | 180 |
| Morpholine | 0.5-10 | 180L |
| Naphthalene | 0.5-14 | 60 |
| Nickel in Solution | 5-50mg/L | 291 |
| Nitric acid | 5-100 | 80 |
| Nitric acid | 0.1-40 | 15L |
| Nitric acid (Dosi tube) | 0.8-80 | 14D |
| NItric acid (Dosi tube) | 0.32-32 | 17D |
| Nitroethane | 4-240 | 52 |
| 1-Nitropropane | 4.2-252 | 52 |
| 2-Nitropropane | 3.7-222 | 52 |
| Nitrogen dioxide | 0.5-125 | 9L |
| Nitrogen dioxide | 0.2-4 | 80 |
| Nitrogen dioxide | 0.5-30 | 52 |
| Nitrogen dioxide (Dosi tube) | 0.01-3.0 | 9DL |
| Nitrogen dioxide (Dosi tube) | 0.1-30 | 9D |
| Nitrogen dioxide (for Automatic Air Sampling Pump) | 0.02-0.2 | 9P |
| Nitrogen oxides | 0.04-16.5 | 11L |
| Nitrogen oxides | 50-2,500 | 11HA |
| Nitrogen oxides | 5-625 | 11S |
| Nitrogen oxides (Airtec tube) | 0.02-2 | 11A |
| Nitromethane | 5-300 | 52 |
| NO & NO2 (Separate Quantification) | 2.5-200 | 10 |
| Nonane | 130-3,900 | 105 |
| Octane | 100-3,000 | 105 |
| Octane | 0.036-0.72% | 101 |
| Oil mist (Airtec tube) | 0.3-1.5mg/m3 | 109A |
| Oil mist (Airtec tube) | 0.2-5mg/m3 | 109AD |
| Olefines | 0.34-13.6% | 100A |
| Oxygen | 3-24% | 31B |
| Ozone | 0.025-3 | 18L |
| Ozone | 4-400 | 18M |
| Ozone in Solution | 1-10mg/L | 218 |
| Pentachloroethane | 40-500 | 133L |
| 1,3-Pentadiene | 42.5-850 | 174L |
| 1,3-Pentadiene | 250-4,000 | 174 |
| Pentamethylenediamine | 0.75-15 | 180L |
| Pentane | 30-1,680 | 104 |
| Pentane | 0.0375-1.8% | 103 |
| 2-Pentenenitrile | 0.5-15 | 193 |
| 2-Pentenenitrile | 0.24-7.2 | 191L |
| 3-Pentenenitrile | 0.4-12 | 191L |
| Petroleum benzine | 0.5-28mg/L | 106 |
| Petroleum ether | 0.5-28mg/L | 106 |
| Petroleum naphtha | 0.5-28mg/L | 106 |
| Phenol | 0.4-187 | 60 |
| Phosgene | 0.05-20 | 16 |
| Phosphine | 2.5-1,000 | 7J |
| Phosphine | 200-5,500 | 7H |
| Phosphine | 2.5-100 | 7 |
| Phosphine | 0.15-5 | 7L |
| Phosphine | 0.05-9.8 | 7LA |
| a-Pinene | 95-1140 | 121 |
| Polytec I Unknown Gases | Qualitative | 107 |
| Polytec II (NH3,SO2,H2S,CO,NO2,) | Qualitative | 25 |
| Polytec III (NH3,H2S,CnHm) | Qualitative | 26 |
| Polytec IV (NH3,HCl,H2S,NO2,SO2,CO,CO2) | Qualitative | 27 |
| Propane | 0.05-2.4% | 103 |
| Propane (Injection tube) | 0.1-2% | 100B |
| Propionaldehyde | 24-1,880 | 151L |
| Propionaldehyde | 0.76-38 | 91L |
| Propionic acid | 0.25-10 | 81L |
| Propionic acid | 3-75 | 81 |
| Propionitrile | 50-1,200 | 191 |
| Propyl acetate | 20-500 | 145 |
| Propyl alcohol | 0.04-2.5% | 113 |
| Propyl alcohol | 13.6-136 | 113LL |
| Propyl alcohol | 65-1,040 | 113L |
| n-Propyl bromide | 1-18 | 136LA |
| Propyl mercaptan | 0.12-9.6 | 70L |
| Propyl mercaptan | 22.5-540 | 70 |
| Propylamine | 6-120 | 180 |
| Propylamine | 0.5-10 | 180L |
| Propylene | 0.02-0.8% | 100A |
| Propylene dichloride | 40-800 | 131La |
| Propylene imine | 5.5-110 | 180 |
| Propylene imine | 0.35-7 | 180L |
| Propylene oxide | 0.065-3.9% | 163 |
| Propylene oxide | 1-100 | 163L |
| Pyridine | 0.2-35 | 182 |
| Stoddard solvent | 50-8,000mg/m3 | 128 |
| Styrene | 10-1,500 | 124 |
| Styrene | 2-100 | 124L |
| Styrene | 0.075-0.9% | 153 |
| Styrene (Dosi tube) | 26-6,500 | 122DL |
| Sulphide Ion in Solution | 0.5-20 | 211LL |
| Sulphide Ion in Solution | 10-1,000 | 211H |
| Sulphide Ion in Solution | 1-100 | 211 |
| Sulphide Ion in Solution | 2-300 | 211M |
| Sulphur dioxide | 0.05-8% | 5H |
| Sulphur dioxide | 1.25-200 | 5L |
| Sulphur dioxide | 0.5-60 | 5La |
| Sulphur dioxide | 0.1-25 | 5LC |
| Sulphur dioxide | 0.05-10 | 5Lb |
| Sulphur dioxide | 1.5-30 | 80 |
| Sulphur dioxide | 20-3,600 | 5M |
| Sulphur dioxide (Dosi tube) | 10-600 | 5DH |
| Sulphur dioxide (Dosi tube) | 0.2-100 | 5D |
| Sulphuric acid | 0.5-5mg/m3 | 35 |
| Sulphuryl Fluoride (Requires Pyrotec Pyrolyzer IG860) | 1-20 | 231 |
| TBM,DMS | 1-15mg/m3 | 77 |
| 1,1,2,2-Tetrabromoethane | 0.92-9.2 | 135L |
| 1,1,2,2-Tetrachloro-1,2-difluoroethane (R112) | 7-280 | 51 |
| 1,1,2,2-Tetrachloro-1,2-difluoroethane (R112) | 125-3,000 | 51H |
| 1,1,2,2-Tetrachloro-1,2-difluoroethane (R112) | 1-54 | 51L |
| 1,1,2,2-Tetrachloroethane | 2-30 | 131L |
| Tetrachloroethylene | 7-900 | 133HA |
| Tetrachloroethylene | 2-250 | 133M |
| Tetrachloroethylene | 0.1-9 | 133LL |
| Tetrachloroethylene | 0.075-1.5% | 132HH |
| Tetrachloroethylene | 1-75 | 133L |
| Tetrachloroethylene (Dosi tube) | 1.5-150 | 132D |
| Tetrachloroethylene (Dosi tube) | 3-150 | 133D |
| Tetrachloroethylene (for Automatic Air Sampling Pump) | 20-720µg/m3 | 133P |
| Tetrachloroethylene (for Automatic Air Sampling Pump) | 5-80 | 133TP |
| Tetrahydrofuran | 5-232 | 159L |
| Tetrahydrofuran | 20-800 | 159 |
| Tetrahydrofuran | 0.056-1.4% | 161 |
| Tetrahydrothiophene | 10-100mg/m3 | 76M |
| Tetrahydrothiophene | 1-10 | 76 |
| Tetrahydrothiophene | 10-200 | 76H |
| Tetramethylenediamine | 0.8-16 | 180L |
| Tetramethylenediamine | 8.5-170 | 180 |
| Thionyl chloride | 1.44-21.6 | 5La |
| Toluene | 1-100 | 122L |
| Toluene | 0.02-0.8% | 161 |
| Toluene | 5-690 | 122 |
| Toluene (Dosi tube) | 2-500 | 122DL |
| Toluene (for Automatic Air Sampling Pump) | 100-7,000µg/m3 | 122P |
| Toluene (for Automatic Air Sampling Pump) | 2-80 | 122TP |
| o-Toluidine | 5-60 | 181 |
| Trichloroacetic acid | 1-37.5 | 15L |
| 1,2,4-Trichlorobenzene | 0.65-13 | 131La |
| 1,1,1-Trichloroethane(Methyl chloroform) | 100-2,000 | 135 |
| 1,1,1-Trichloroethane(Methyl chloroform) | 6-900 | 135L |
| 1,1,2-Trichloroethane | 220-750 | 135 |
| Trichloroethylene | 20-1300 | 132HA |
| Trichloroethylene | 0.05-2.5% | 132HH |
| Trichloroethylene | 0.125-8.8 | 132LL |
| Trichloroethylene | 1-70 | 132L |
| Trichloroethylene | 2-250 | 132M |
| Trichloroethylene (Dosi tube) | 3-300 | 132D |
| Trichloroethylene (for Automatic Air Sampling Pump) | 20-1,200µg/m3 | 132P |
| Trichloroethylene (for Automatic Air Sampling Pump) | 1-33 | 132TP |
| Trichlorofluoromethane (R11) | 0.8-43 | 51L |
| Trichlorofluoromethane (R11) | 275-6,600 | 51H |
| Trichlorofluoromethane (R11) | 8-320 | 51 |
| 1,2,3-Trichloropropane | 36-360 | 135L |
| 1,1,1-Trichloro-2,2,2-trifluoroethane (R113a) | 0.8-43 | 51L |
| 1,1,1-Trichloro-2,2,2-trifluoroethane (R113a) | 200-4,800 | 51H |
| 1,1,1-Trichloro-2,2,2-trifluoroethane (R113a) | 10-400 | 51 |
| 1,1,2-Trichloro-1,2,2-trifluoroethane (R113) | 1-54 | 51L |
| 1,1,2-Trichloro-1,2,2-trifluoroethane (R113) | 250-6000 | 51H |
| 1,1,2-Trichloro-1,2,2-trifluoroethane (R113) | 10-400 | 51 |
| Triethylamine | 0.3-6 | 180L |
| Triethylamine | 4.5-90 | 180 |
| Triethylamine (Dosi tube) | 5.3-2,100 | 3D |
| Trimethyl benzene | 10-300 | 123 |
| Trimethylamine | 3.5-70 | 180 |
| Trimethylamine | 0.25-5 | 180L |
| Trimethylamine | 25-250 | 3M |
| Trimethylamine (Dosi tube) | 0.23-23 | 3DL |
| Valeric acid | 0.38-15 | 81L |
| Vinyl acetate | 0.06-0.9% | 141 |
| Vinyl acetate | 5-250 | 143 |
| Vinyl chloride | 0.25-54 | 131La |
| Vinyl chloride | 0.025-2% | 131 |
| Vinyl chloride | 0.25-70 | 131LB |
| Vinyl chloride | 0.1-6.6 | 131L |
| Vinyl Chloride (Dosi tube) | 1.56-240 | 174D |
| Vinyl chloride (for Automatic Air Sampling Pump) | 50-1,500µg/m3 | 131P |
| Vinyl trimethoxysilane | 2.5-40 | 113L |
| Vinylidene chloride | 0.4-40.6 | 130L |
| Water vapour | 3-100LB/MMCF | 6LP |
| Water vapour | 2-10LB/MMCF | 6LLP |
| Water vapour | 0.5-32mg/L | 6 |
| Water vapour | 0.05-2mg/L | 6L |
| Water vapour (Airtec tube) | 150-3,000mg/m3 | 6Ag |
| Water vapour (Airtec tube) | 30-80mg/m3 | 6A |
| Water vapour (Airtec tube) | 500-5,000 | 6AH |
| Xylene | 5-625 | 123 |
| Xylene | 2-200 | 123L |
| Xylene | 2-200 | 122L |
| Xylene | 0.1-1.2% | 100A |
| Xylene (Dosit tube) | 3.4-850 | 122DL |
| Xylene (for Automatic Air Sampling Pump) | 2-80 | 123TP |
| p-Xylene (for Automatic Air Sampling Pump) | 540-13,500mg/m3 | 122P |
| Zinc in Solution | 3-20mg/L | 285 |
