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Gastec Standard Tubes


Gastec gas detector tubes are of the highest quality utilising colorimetric technology for accurately analysing a wide variety of gases, vapours and ground substances.

Short-term Gastec gas detector tubes safely allow users to perform field screening, spot sampling and tests in industrial environments to detect hazardous and toxic gases, and chemical vapours.

There are 10 tubes in a pack except GAS31B (Oxygen).


Tubes Guide
Tube List

Gastec Standard Tubes

Ordering Information


GAS1H Carbon Monoxide Gastec Detector Tubes 0.1 - 10%
GAS1HH Carbon Monoxide Gastec Detector Tubes 1 - 50%
GAS1L Carbon Monoxide Gastec Detector Tubes 2.5 - 2000ppm
GAS1LA Carbon Monoxide Gastec Detector Tubes 8 - 1000ppm
GAS1LC Carbon Monoxide Gastec Detector Tubes 1 - 30ppm
GAS1LK Carbon Monoxide Gastec Detector Tubes 5 - 600ppm
GAS1LKC Carbon Monoxide Gastec Detector Tubes 5 - 100ppm
GAS1LL Carbon Monoxide Gastec Detector Tubes 5 - 50ppm
GAS1LM Carbon Monoxide Gastec Detector Tubes 25 - 2000ppm
GAS1M Carbon Monoxide Gastec Detector Tubes 0.05 - 4%
GAS2H Carbon Dioxide Gastec Detector Tubes 0.5 - 20%
GAS2HH Carbon Dioxide Gastec Detector Tubes 2.5 - 40%
GAS2L Carbon Dioxide Gastec Detector Tubes 0.13 - 6%
GAS2LC Carbon Dioxide Gastec Detector Tubes 100 - 4000ppm
GAS2LL Carbon Dioxide Gastec Detector Tubes 300 - 5000ppm
GAS3H Ammonia Gastec Detector Tubes 0.2 - 32%
GAS3HM Ammonia Gastec Detector Tubes 0.05 - 3.52%
GAS3L Ammonia Gastec Detector Tubes 0.5 - 78ppm
GAS3La Ammonia Gastec Detector Tubes 2.5 - 200ppm
GAS3M Ammonia Gastec Detector Tubes 10 - 1000ppm
GAS4H Hydrogen Sulphide Gastec Detector Tubes 10 - 4000ppm
GAS4HH Hydrogen Sulphide Gastec Detector Tubes 0.1 - 4%
GAS4HM Hydrogen Sulphide Gastec Detector Tubes 25 - 1600ppm
GAS4HP Hydrogen Sulphide Gastec Detector Tubes 0.25 - 20%
GAS4HT Hydrogen Sulphide Gastec Standard Detector Tubes 1 - 40%
GAS4L Hydrogen Sulphide Gastec Detector Tubes 1 - 240ppm
GAS4LB Hydrogen Sulphide Gastec Detector Tubes 0.5 - 12ppm
GAS4LK Hydrogen Sulphide Gastec Detector Tubes 1 - 40ppm
GAS4LL Hydrogen Sulphide Gastec Detector Tubes 0.25 - 120ppm
GAS4LT Hydrogen Sulphide Gastec Detector Tubes 0.1 - 4ppm
GAS4M Hydrogen Sulphide Gastec Detector Tubes 12.5 - 500ppm
GAS5H Sulphur Dioxide Gastec Detector Tubes 0.05 - 8%
GAS5L Sulphur Dioxide Gastec Detector Tubes 1.25 - 200ppm
GAS5LA Sulphur Dioxide Gastec Detector Tubes 0.5 - 60ppm
GAS5LB Sulphur Dioxide Gastec Detector Tubes 0.05 - 10ppm
GAS5LC Sulphur Dioxide Gastec Detector Tubes 0.1 - 25ppm
GAS5M Sulphur Dioxide Gastec Detector Tubes 20 - 3600ppm
GAS6 Water Vapour Gastec Detector Tubes 0.5 - 32 mg/l
GAS6L Water Vapour Gastec Detector Tubes 0.05 - 2mg/l
GAS6LLP Water Vapour Gastec Detector Tubes 2 - 10LB/MMCF
GAS6LP Water Vapour Gastec Detector Tubes 3 - 100 LB/MMCF
GAS7 Phosphine Gastec Detector Tubes 2.5 - 100ppm
GAS7H Phosphine Gastec Detector Tubes 200 - 5500ppm
GAS7J Phosphine Gastec Detector Tubes 2.5 - 1000ppm
GAS7L Phosphine Gastec Detector Tubes 0.15 - 5ppm
GAS7LA Phosphine Gastec Detector Tubes 0.05 - 9.8ppm
GAS8H Chlorine Gastec Detector Tubes 25 - 1000ppm
GAS8HH Chlorine Gastec Detector Tubes 0.25 - 10%
GAS8LA Chlorine Gastec Detector Tubes 0.1 - 16ppm
GAS8LL Chlorine Gastec Detector Tubes 0.025 - 2ppm
GAS9L Nitrogen Dioxide Gastec Detector Tubes 0.5 - 125ppm
GAS10 Nitrogen Oxides (Separate Quantification) Gastec Detector Tubes 2.5 - 200ppm
GAS11HA Nitrogen Oxides (Total Quantification) Gastec Detector Tubes 50 - 2500ppm
GAS11L Nitrogen Oxides (Total Quantification) Gastec Detector Tubes 0.04 - 16.5ppm
GAS11S Nitrogen Oxides (Total Quantification) Gastec Detector Tubes 5 - 625ppm
GAS12H Hydrogen Cyanide Gastec Detector Tubes 0.05 - 1.6%
GAS12L Hydrogen Cyanide Gastec Detector Tubes 0.5 - 150ppm
GAS12LL Hydrogen Cyanide Gastec Detector Tubes 0.02 - 0.6%
GAS12LL Hydrogen Cyanide Gastec Detector Tubes 0.2 - 10ppm
GAS12M Hydrogen Cyanide Gastec Detector Tubes 17 - 2400ppm
GAS13 Carbon Disulphide Gastec Detector Tubes 0.63 - 100ppm
GAS13L Carbon Disulphide Gastec Standard Detector Tubes 0.8 - 8.1ppm
GAS13M Carbon Disulphide Gastec Detector Tubes 20 - 4000ppm
GAS14L Hydrogen Chloride Gastec Detector Tubes 0.2 - 76ppm
GAS14M Hydrogen Chloride (Hydrochloric Acid) Gastec Detector Tubes 10 - 1000ppm
GAS14R Hydrogen Chloride Gastec Detector Tubes 50 - 5000ppm
GAS15L Nitric Acid Gastec Detector Tubes 0.1 - 1ppm
GAS16 Phosgene Gastec Detector Tubes 0.05 - 20ppm
GAS17 Hydrogen Fluoride Gastec Detector Tubes 0.25 - 100ppm
GAS17L Hydrogen Fluoride Gastec Detector Tubes 0.09 - 72ppm
GAS17LL Hydrogen Fluoride Gastec Detector Tubes 0.05 - 24ppm
GAS18L Ozone Gastec Detector Tubes 0.025 - 3ppm
GAS18M Ozone Gastec Detector Tubes 4 - 400ppm
GAS19LA Arsine Gastec Detector Tubes 0.04 - 10ppm
GAS21 Carbonyl Sulphide Gastec Detector Tubes 5 - 200ppm
GAS21LA Carbonyl Sulphide Gastec Detector Tubes 2 - 125ppm
GAS22 Diborane Gastec Detector Tubes 0.02 - 5ppm
GAS23L Chlorine Dioxide Gastec Detector Tubes 0.025 - 1.2ppm
GAS23M Chlorine Dioxide Gastec Detector Tubes 0.1 - 10ppm
GAS30 Hydrogen Gastec Detector Tubes 0.5 - 2%
GAS31B Oxygen Gastec Detector Tubes 3 - 24%
GAS32 Hydrogen Peroxide Gastec Detector Tubes 0.5 - 10ppm
GAS35 Sulphuric Acid Gastec Detector Tubes 0.5 - 5mg/m3
GAS40 Mercury Vapour Gastec Detector Tubes 0.05 - 132mg/m3
GAS45H Hydrogen Sulphide + Sulphur Dioxide (total) Gastec Detector Tubes 0.02 - 8%
GAS45S Hydrogen Sulphide + Sulphur Dioxide (Seperate) Gastec Detector Tubes 0.25 - 20ppm SO2) & 1.25 - 120ppm (H2S)
GAS60 Phenol Gastec Detector Tubes 0.4 - 187ppm
GAS61 o-Cresol Gastec Detector Tubes 0.4 - 62.5ppm
GAS70 Mercaptans Gastec Detector Tubes 0.5 - 120ppm
GAS70L Mercaptans Gastec Detector Tubes 0.1 - 8ppm
GAS71 Methyl Mercaptan Gastec Detector Tubes 0.25 - 140ppm
GAS71H Methyl Mercaptan Gastec Detector Tubes 20 - 2700ppm
GAS72 Ethyl Mercaptan Gastec Detector Tubes 0.5 - 120ppm
GAS72L Ethyl Mercaptan Gastec Detector Tubes 0.2 - 75ppm
GAS75 tert-Butyl Mercaptan Gastec Standard Detector 2.5 - 150mg/m3
GAS75L tert-Butyl Mercaptan Gastec Standard Detector 0.5 - 30mg/m3
GAS76 Tetrahydrothiophene Gastec Detector Tubes 1 - 10ppm
GAS76H Tetrahydrothiophene Gastec Detector Tubes 10 - 200ppm
GAS76M Tetrahydrothiophene Gastec Detector Tubes 10 - 100mg/m3
GAS77 Dimethyl Sulphide (inc tert-Butyl Mercaptan tube) Gastec Detector Tubes 1 - 15mg/m3
GAS80 Acid Gases Gastec Detector Tubes 1 - 80ppm
GAS81 Acetic Acid Gastec Gas Detector Tubes 1 - 100ppm
GAS81L Acetic Acid Gastec Gas Detector Tubes 0.125 - 25ppm
GAS91L Formaldehyde Gastec Detector Tubes 0.1 - 40ppm
GAS91LL Formaldehyde Gastec Detector Tubes 0.05 - 1ppm
GAS91M Formaldehyde Gastec Detector Tubes 8 - 6400ppm
GAS92 Acetaldehyde Gastec Detector Tubes 5 - 750ppm
GAS92L Acetaldehyde Gastec Detector Tubes 1 - 20ppm
GAS92M Acetaldehyde Gastec Detector Tubes 2.5 - 100ppm
GAS93 Acrolein Gastec Detector Tubes 3.3 - 800ppm
GAS100A LPG (Liquified Petroleum Gas) Gastec Detector Tubes 0.02 - 0.8%
GAS101 Gasoline Gastec Detector Tubes 0.015 - 1.2%
GAS101L Gasoline Gastec Detector Tubes 30 - 2000ppm
GAS102H Hexane Gastec Detector Tubes 0.015 - 1.2%
GAS102L Hexane Gastec Standard Detector Tubes 4 - 1200ppm
GAS104 Butane Gastec Detector Tubes 25 - 1400ppm
GAS105 Hydrocarbons (Higher Class) Gastec Detector Tubes 100 - 3000ppm
GAS106 Petroleum Naptha Gastec Detector Tubes 0.5 - 28mg/l
GAS111 Methanol Gastec Detector Tubes 0.002 - 4.5%
GAS111L Methanol Gastec Detector Tubes 20 - 1000ppm
GAS111LL Methanol Gastec Detector Tubes 2 - 56ppm
GAS112 Ethanol Gastec Detector Tubes 0.01 - 7.5%
GAS112L Ethanol Gastec Detector Tubes 50 - 200ppm
GAS113 Isopropyl Alcohol (IPA) Gastec Detector Tubes 0.02 - 5%
GAS113L Isopropyl Alcohol (IPA) Gastec Detector Tubes 25 - 800ppm
GAS113LL Isopropyl Alcohol (IPA) Gastec Detector Tubes 20 - 440ppm
GAS114 n-Butanol (1-Butanol) Gastec Detector Tubes 10 - 150ppm
GAS115 Butanol-2 Gastec Detector Tubes 5 - 150ppm
GAS116 Isobutyl Alcohol Gastec Detector Tubes 10 - 150ppm
GAS117 Isoamyl Alcohol Gastec Detector Tubes 5 - 300ppm
GAS118 Cyclohexanol Gastec Detector Tubes 5 - 100ppm
GAS119 Methylcyclohexanol Gastec Detector Tubes 5 - 100ppm
GAS120 Aromatic Hydrocarbons Gastec Detector Tubes 0.4 - 200ppm
GAS121 Benzene Gastec Detector Tubes 2.5 - 120ppm
GAS121L Benzene Gastec Detector Tubes 0.1 - 65ppm
GAS121S Benzene Gastec Detector Tubes 2 - 312ppm
GAS121SL Benzene Gastec Detector Tubes 1 - 100ppm
GAS121SP Benzene Gastec Detector Tubes 0.2 - 66ppm
GAS122 Toluene Gastec Detector Tubes 5 - 690ppm
GAS122L Toluene Gastec Detector Tubes 1 - 100ppm
GAS123 Xylene Gastec Detector Tubes 6 - 625ppm
GAS123L Xylene Gastec Detector Tubes 2 - 200ppm
GAS124 Styrene Gastec Detector Tubes 10 - 1500ppm
GAS124L Styrene Gastec Detector Tubes 2 - 100ppm
GAS126 Chlorobenzene Gastec Detector Tubes 2 - 500ppm
GAS126L Chlorobenzene Gastec Detector Tubes 0.5 - 43ppm
GAS127 o-Dichlorobenzene Gastec Detector Tubes 2.5 - 300ppm
GAS128 Stoddard Solvent Gastec Detector Tubes 50 - 8000mg/m3
GAS130L Vinylidene Chloride Gastec Detector Tubes 0.4 - 40.6ppm
GAS131 Vinyl Chloride Gastec Detector Tubes 0.025 - 2%
GAS131L Vinyl Chloride Gastec Detector Tubes 0.1 - 6.6ppm
GAS131LA Vinyl Chloride Gastec Detector Tubes
GAS131LA Vinyl Chloride Gastec Detector Tubes 0.25 - 54ppm
GAS131LB Vinyl Chloride Gastec Detector Tubes 0.25 - 70ppm
GAS132HA Trichloroethylene Gastec Detector Tubes 20 - 1300ppm
GAS132HH Trichloroethylene Gastec Detector Tubes 0.05 - 2.5%
GAS132L Trichloroethylene Gastec Detector Tubes 1 - 70ppm
GAS132LL Trichloroethylene Gastec Detector Tubes 0.125 - 8.8ppm
GAS132M Trichloroethylene Gastec Detector Tubes 2 - 250ppm
GAS133HA Tetrachloroethylene Gastec Detector Tubes 7 - 900ppm
GAS133L Tetrachloroethylene Gastec Detector Tubes 1 - 75ppm
GAS133LL Tetrachloroethylene Gastec Detector Tubes 0.1 - 9ppm
GAS133M Tetrachloroethylene Gastec Detector Tubes 2 - 250ppm
GAS134 Carbon Tetrachloride Gastec Detector Tubes 0.5 - 60ppm
GAS134L Carbon Tetrachloride Gastec Detector Tubes 0.25 - 12ppm
GAS135 Trichloroethane-1,1,1 Gastec Detector Tubes 100 - 2000ppm
GAS135L Trichloroethane-1,1,1 Gastec Detector Tubes 6 - 900ppm
GAS136H Methyl Bromide Gastec Detector Tubes 10 - 600ppm
GAS136L Methyl Bromide Gastec Detector Tubes 2.5 - 200ppm
GAS136LA Methyl Bromide Gastec Detector Tubes 1 - 36ppm
GAS136LL Methyl Bromide Gastec Detector Tubes 0.1 - 3ppm
GAS137 Chloroform Gastec Detector Tubes 4 - 400ppm
GAS137LA Chloroform Gastec Detector Tubes 0.5 - 30ppm
GAS137LL Chloroform Gastec Detector Tubes 0.3 - 4.5ppm
GAS138 Methylene Chloride Gastec Detector Tubes 20 - 500ppm
GAS138L Methylene Chloride Gastec Detector Tubes 10 - 150ppm
GAS139 Dichloroethylene-1,2 Gastec Detector Tubes
GAS139 Dichloroethylene-1,2 Gastec Detector Tubes 5 - 250ppm
GAS140 Aliphatic Hydrocarbons Gastec Detector Tubes 6 - 3000ppm
GAS141 Ethyl Acetate Gastec Detector Tubes 0.1 - 1.5%
GAS141L Ethyl Acetate Gastec Detector Tubes 20 - 800ppm
GAS142 Butyl Acetate Gastec Detector Tubes 0.05 - 0.8%
GAS142L Butyl Acetate Gastec Detector Tubes 10 - 300ppm
GAS143 Vinyl Acetate Gastec Detector Tubes 5 - 250ppm
GAS144 Isobutyl Acetate Gastec Detector Tubes 10 - 300ppm
GAS145 Propyl Acetate Gastec Detector Tubes 20 - 500ppm
GAS146 Isopropyl Acetate Gastec Detector Tubes 10 - 500ppm
GAS147 Amyl Acetate Gastec Detector Tubes 10 - 200ppm
GAS148 Isoamyl Acetate Gastec Detector Tubes 10 - 200ppm
GAS149 Methyl Methacrylate Gastec Detector Tubes 10 - 500ppm
GAS151 Acetone Gastec Detector Tubes 0.05 - 2%
GAS151L Acetone Gastec Detector Tubes 50 - 12000ppm
GAS152 Methyl Ethyl Ketone (MEK) Gastec Detector Tubes 0.02 - 0.6%
GAS152L Methyl Ethyl Ketone (MEK) Gastec Detector Tubes 10 - 384ppm
GAS153 Methyl Isobutyl Ketone Gastec Detector Tubes 0.05 - 0.6ppm
GAS153L Methyl Isobutyl Ketone Gastec Detector Tubes 2.5 - 130ppm
GAS154 Cyclohexanone Gastec Detector Tubes 2 - 75ppm
GAS155 Methylcyclohexanone Gastec Detector Tubes 2 - 100ppm
GAS159 Tetrahydrofuran Gastec Detector Tubes 20 - 800ppm
GAS159L Tetrahydrofuran Gastec Detector Tubes 5 -232ppm
GAS161 Ethyl Ether Gastec Detector Tubes 0.04 - 1%
GAS161L Ethyl Ether Gastec Detector Tubes 10 - 1200ppm
GAS163 Ethylene Oxide Gastec Detector Tubes 0.05 - 3%
GAS163L Ethylene Oxide Gastec Detector Tubes 0.4 - 350ppm
GAS163LL Ethylene Oxide Gastec Detector Tubes 0.1 - 10ppm
GAS165L Ethylene Glycol Gastec Detector Tubes 10 - 100mg/m3
GAS171 Acetylene Gastec Detector Tubes 0.04% - 4%
GAS172 Ethylene Gastec Detector Tubes 25 - 800ppm
GAS172L Ethylene Gastec Detector Tubes 0.2 - 50ppm
GAS174 Butadiene-1,3 Gastec Detector Tubes 50 - 800ppm
GAS174L Butadiene-1,3 Gastec Detector Tubes 2.5 - 100ppm
GAS174LL Butadiene-1,3 Gastec Detector Tubes 0.5 - 5ppm
GAS180 Amines Gastec Detector Tubes 5 - 100ppm
GAS180L Amines Gastec Detector Tubes 0.5 - 10ppm
GAS181 Aniline Gastec Detector Tubes 1.25 - 60ppm
GAS182 Pyridine Gastec Detector Tubes 0.2 - 35ppm
GAS183 N,N-Dimethyl Formamide Gastec Detector Tubes 0.8 - 90ppm
GAS184 N,N-Dimethyl Acetamide Gastec Detector Tubes 1.5 - 240ppm
GAS185 Hydrazine Gastec Detector Tubes 0.05 - 2ppm | Hydrazine Detection
GAS191 Acrylonitrile Gastec Detector Tubes 2 - 360ppm
GAS191L Acrylonitrile Gastec Detector Tubes 0.1 - 18ppm
GAS192 Methacrylonitrile Gastec Detector Tubes 0.2 - 32ppm
GAS193 Pentenenitrile-2 Gastec Detector Tubes 0.5 - 15ppm
GAS230 Methyl Iodide Gastec Detector Tubes 0.5 - 108ppm
GAS230H Methyl Iodide Gastec Detector Tubes 100 - 34800ppm
GAS232 Dichloroethane-1,2 Gastec Detector Tubes 1 - 39ppm
GAS233 Chloropicrin Gastec Detector Tubes 0.045 - 22ppm



Please note - Product designs and specifications are subject to change without notice. The user is responsible for determining the suitability of this product.

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