Gastec 5mm Detector Tubes

Gas or Vapour to be Measured Chemical Formula Tube No. & Name Tube Name Measuring Range (ppm)
Acetaldehyde
CH3CHO		 92 Acetaldehyde 300-750
10-300
5-10
  92M Acetaldehyde 5-100
2.5-5
  92L Acetaldehyde 1-20
Acetic acid
CH3CO2H		 81 Acetic acid 50-100
2-50
1-2
  81L Acetic acid 10-23.0
0.25-10
0.125-0.25
Acetic anhydride
(CH3CO)2O		 81 Acetic acid 0.6-15
  81L Acetic acid 0.15-6
Acetone
CH3COCH3		 151 Acetone 0.8-2.0%
0.05-0.8%
  151L Acetone 4000-12000
50-4000
Acetone cyanohydrin
(CH3)2C(OH)(CN)		 12L Hydrogen cyanide 2.5-60
Acetonitrile
CH3CN		 52 Nitro compounds
(Pyrotec tube)		 3-180
Acetylene
HC≡CH		 171 Acetylene 2.0-4.0%
0.1-2.0%
0.05-0.1%
  103 Hydrocarbons (Lower class) 1.8-3.6%
0.15-1.8%
0.075-0.15%
  172 Ethylene 32.5-1040
Acetylene dichloride See 1,2-Dichloroethylene    
Acid gases 80 Acid gases 40-80
2-40
1-2
Acrolein
CH2:CHCHO		 93 Acrolein 10-800
3.3-10
Acrylic acid
CH2:CHCO2H		 81 Acetic acid 2-50
  81L Acetic acid 0.45-18
Acrylonitrile
CH2:CHCN		 191 Acrylonitrile 120-360
5-120
2-5
  191L Acrylonitrile 6-18
0.2-6
0.1-0.2
  102L Hexane 600-14400
Aliphatic hydrocarbons 140 Aliphatic hydrocarbons 1000-3000
20-1000
6-20
Allyl amine
CH2:CHCH2NH2		 180 Amines 8.5-170
  180L Amines 0.4-8
Allyl isothiocyanate
CH2:CHCH2NCS		 149 Methyl methacrylate 4.4-88
Allyl chloride
CH2:CHCH2CI		 101L Gasoline  (Petrol) 0.1-3.4%
  131L Vinyl chloride 3.2-48
Amines
CH3NH2 calibration		 180 Amines 5-100
  180L Amines 0.5-10
2-Aminoethanol See Ethanolamine    
Ammonia
NH3		 3H Ammonia 16-32%
1-16%
0.2-1%
  3HM Ammonia 1.6-3.52%
0.05-1.6%
  3M Ammonia 500-1000
50-500
10-50
  3La Ammonia 100-220
5-100
2.5-5
  3L Ammonia 30-78
1-30
0.5-1
  180 Amines 1.5-30
Amyl acetate
CH3CO2(CH2)4CH3		 147 Amyl acetate 10-200
Aniline
C6H5NH2		 181 Aniline 30-60
2.5-30
1.25-2.5
Aromatic hydrocarbons 120 Aromatic hydrocarbons 100-200
2-100
0.4-2
Arsine
AsH3		 19LA Arsine 2.4-10
1.5-2.4
0.1-1.5
0.04-0.1
Benzaldehyde
C6H5CHO		 91L Formaldehyde 4-92
Benzene
C6H6		 121S Benzene 120-312
5-120
2-5
  121 Benzene 60-120
5-60
2.5-5
  121SL Benzene 20-100
1-20
  121SP Benzene 20-66
0.2-20
  121L Benzene 10-65
0.1-10
  171 Acetylene 0.03-0.6%
Benzyl bromide
C6H5CH2Br		 136L Methyl bromide 11-100
Benzyl chloride
C6H5CH2CI		 132L Trichloroethylene 1.6-20
Boron trichloride
BCI3		 12L Hydrogen cyanide 2.25-54
Bromine
Br2		 8La Chlorine 0.05-0.8
Bromochloromethane See Chlorobromomethane    
Bromoform
CHBr3		 136L Methyl bromide 1-50
1,3-Butadiene
CH2:CHCH:CH2		 174 1,3-Butadiene 50-800
  174L 1,3-Butadiene 5-100
2.5-5
  174LL 1,3-Butadiene 0.5-5
Butane 104 Butane 25-1400
C4H10 103 Hydrocarbons (Lower class) 0.84-1.68%
      0.07-0.84%
      0.035-0.07%
1-Butanol
CH3CH2CH2CH2OH		 114 1-Butanol 10-150
2-Butanol
CH3CH2CH(OH)CH3		 115 2-Butanol 5-150
2-Butanone See Methyl ethyl ketone (MEK)    
Butyl acetate
CH3CO2(CH2)3CH3		 142 Butyl acetate 0.05-0.8%
  142L Butyl acetate 10-300
tert-Butyl alcohol
(CH3)3COH		 102L Hexane 500-12000
Butyl acrylate
CH2:CHCO2C4H9		 142L Butyl acetate 7-210
Butylamine
CH3(CH2)3NH2		 180 Amines 8-160
  180L Amines 0.55-11
tert-Butylamine
(CH3)3CNH2		 180 Amines 5.5-110
n-Butyl bromide 136H Methyl bromide 24-360
C4H9Br 136L Methyl bromide 10-100
  136LA Methyl bromide 2.4-43.2
      1-18
Butyl mercaptan 70L Mercaptans 6.4-12.8
CH3(CH2)3SH     0.8-6.4
      0.32-0.8
      0.16-0.32
tert-Butyl mercaptan 75 tert-Butyl mercaptan 60-150mg/m3
(CH3)3CSH     30-60mg/m3
      2.5-30mg/m3
  75N tert-Butyl mercaptan 50-250mg/m3
      2.5-50mg/m3
      1.25-2.5mg/m3
  75L tert-Butyl mercaptan 15-30mg/m3
      1-15mg/m3
      0.5-1mg/m3
tert-Butyl mercaptan 75LN tert-Butyl mercaptan 15-39mg/m3
(CH3)3CSH     1-15mg/m3
      0.5-1mg/m3
  77 TBM and DMS 1-15mg/m3
  70L Mercaptans 4-8
      0.5-4
      0.2-0.5
      0.1-0.2
  70LN Mercaptans 1-40
Butyric acid
CH3CH2CH2CO2H		 81L Acetic acid 0.325-13
Butyronitrile
CH3CH2CH2CN		 191L Acrylonitrile 6-180
Carbon dioxide 2HH Carbon dioxide 5-40%
CO2     2.5-5%
  2H Carbon dioxide 10-20%
      1-10%
      0.5-1%
  2L Carbon dioxide 3-6%
      0.25-3%
      0.13-0.25%
  2LL Carbon dioxide 300-5000
  2LC Carbon dioxide 2000-4000
      100-2000
Carbon disulphide 13M Carbon disulphide 1600-5120
CS2     50-1600
      15-50
  13 Carbon disulphide 50-100
      2.5-50
      1.25-2.5
      0.63-1.25
  13L Carbon disulphide 3.0-8.1
      0.1-3.0
Carbon monoxide 1HH Carbon monoxide 2-50%
CO     1-2%
  1H Carbon monoxide 5-10%
      0.2-5%
      0.1-0.2%
  1M Carbon monoxide 2-4%
      0.1-2%
      0.05-0.1%
  1LM Carbon monoxide 1000-2000
    (in Hydrogen) 50-1000
      25-50
  1L Carbon monoxide 1000-2000
      25-1000
      2.5-25
  1La Carbon monoxide 500-1000
      25-500
      12.5-25
      8-12.5
Carbon monoxide 1LK Carbon monoxide 300-600
CO   (in Hydrogen) 100-300
      5-100
  1LKC Carbon monoxide 5-100
    (in Hydrogen with Hydrocarbons)  
  1LL Carbon monoxide 5-50
  1LC Carbon monoxide 1-30
Carbon tetrachloride 134 Carbon tetrachloride 2.5-60
CCI4     0.5-2.5
  134L Carbon tetrachloride 5-11
      0.25-5
Carbonyl chloride See Phosgene    
Carbonyl sulphide 21 Carbonyl sulphide 100-200
COS     10-100
      5-10
  21LA Carbonyl sulphide 50-125
      5-50
      2-5
Chlorine 8HH Chlorine 0.5-10%
CI2     0.25-0.5%
  8H Chlorine 500-1000
      50-500
      25-50
  8La Chlorine 8-16
      0.5-8
      0.1-0.5
  8LL Chlorine 1-2
      0.05-1
      0.025-0.05
  80 Acid gases 0.7-14
Chlorine dioxide 23M Chlorine dioxide 5-10
CIO2     0.5-5
      0.1-0.5
  23L Chlorine dioxide 0.6-1.2
      0.05-0.6
      0.025-0.05
  8H Chlorine 45-450
  8La Chlorine 0.3-4.8
Chlorobenzene 126 Chlorobenzene 200-500
C6H5CI     5-200
      2-5
  126L Chlorobenzene 10-57
      0.5-10
Chlorobromomethane
CH2BrCI		 135 1,1,1-Trichloroethane
(Methyl chloroform)		 22-110
  136H Methyl bromide 18-270
  136L Methyl bromide 11-110
  136LA Methyl bromide 0.7-12.6
Chlorocyclohexane
C6H11CI		 102L Hexane 50-1200
Chlorodifluoromethane (R22)
CHCIF2		 51H Fluorochlorocarbons
(Pyrotec tube)		 0.8-2.4%
0.1-0.8%
  51 Fluorochlorocarbons
(Pyrotec tube)		 25-1000
  51L Fluorochlorocarbons
(Pyrotec tube)		 50-135
2.5-50
1-Chloro-2,3-epoxy propane See Epichlorohydrin    
2-Chloroethanol See Ethylene chlorohydrin    
Chloroethylene See Vinyl chloride    
Chloroform
CHCI3		 137 Chloroform 100-400
10-100
4-10
  137LA Chloroform 12-30
2-12
0.5-2
  137LL Chloroform 0.3-4.5
Chloropicrin
CI3CNO2		 233 Chloropicrin 10-22
0.1-10
0.045-0.1
  134 Carbon tetrachloride 2.5-60
  134L Carbon tetrachloride 0.28-5.5
2-Chloro-1,1,1,2-tetrafluoroethane(R124)
CHCIFCF3		 51 Fluorochlorocarbons
(Pyrotec tube)		 45-1800
m-Cresol
C6H4(CH3)OH		 61 o-Cresol 1-25
o-Cresol
C6H4(CH3)OH		 61 o-Cresol 25-67.5
1-25
0.35-1
p-Cresol
C6H4(CH3)OH		 61 o-Cresol 1-25
Cumene
C6H5CH(CH3)2		 122L Toluene 2-100
Cyclohexane
C6H12		 102H Hexane 0.6-1.2%
0.03-0.6%
0.015-0.03%
  102L Hexane 60-1440
Cyclohexanol
C6H11OH		 118 Cyclohexanol 5-100
Cyclohexanone
C6H10O		 154 Cyclohexanone 30-72
2-30
  91L Formaldehyde 10-470
Cyclohexene
C6H10		 151 Acetone 0.05-0.8%
Cyclohexylamine
C6H13N		 180 Amines 7-140
  180L Amines 0.5-10
Cymene
C10H14		 141L Ethyl acetate 2.4-96
n-Decane
CH3(CH2)8CH3		 105 Hydrocarbons (Higher class) 400-6000
200-400
Diacetone alcohol
(CH3)2C(OH)CH2COCH3		 154 Cyclohexanone 2-100
Diacetyl
CH3COCOCH3		 92 Acetaldehyde 25-1500
1,2-Diaminoethane See  Ethylenediamine    
Diborane
B2H6		 22 Diborane 2-5
0.05-2
0.02-0.05
1,1-Dibromoethane
CH3CHBr2		 136L Methyl bromide 7-70
1,2-Dibromoethane See Ethylene dibromide    
Dibromomethane
CH2Br2		 136L Methyl bromide 5-50
Di-n-butylamine
(CH3CH2CH2CH2)2NH		 180 Amines 5-100
  180L Amines 0.4-8
m-Dichlorobenzene
C6H4CI2		 127 o-Dichlorobenzene 2.5-300
o-Dichlorobenzene
C6H4CI2		 127 o-Dichlorobenzene 2.5-300
p-Dichlorobenzene
C6H4CI2		 127 o-Dichlorobenzene 2.5-300
Dichlorodifluoromethane (R12)
CCI2F2		 51H Fluorochlorocarbons
(Pyrotec tube)		 2600-7800
325-2600
  51 Fluorochlorocarbons
(Pyrotec tube)		 11-440
  51L Fluorochlorocarbons
(Pyrotec tube)		 36-97.2
1.8-36
1,1-Dichloroethane
CH3CHCI2		 135 1,1,1-Trichloroethane
(Methyl chloroform)		 90-450
1,2-Dichloroethane See Ethylene dichloride    
1,1-Dichloroethylene See Vinylidene chloride    
1,2-Dichloroethylene
CICH:CHCI		 139 1,2-Dichloroethylene 100-250
10-100
5-10
  132HA Trichloroethylene 80-800
  132LL Trichloroethylene 0.375-6.0
1,1-Dichloro-1-fluoroethane (R141b)
CH3CCI2F		 51 Fluorochlorocarbons
(Pyrotec tube)		 400-1000
10-400
  51L Fluorochlorocarbons
(Pyrotec tube)		 1.1-22
Dichloromethane See Methylene chloride    
Dichloropentafluoropropane (R225) 51 Fluorochlorocarbons
(Pyrotec tube)		 20-800
  51L Fluorochlorocarbons
(Pyrotec tube)		 1.4-28
1,2-Dichloropropane See Propylene dichloride    
1,3-Dichloropropene
CICH2CH:CHCI		 132HA Trichloroethylene 45-450
  131La Vinyl chloride 0.5-10
1,2-Dichloro-1,1,2,2- tetrafluoroethane (R114) CCIF2CCIF2 51H Fluorochlorocarbons
(Pyrotec tube)		 3800-11400
475-3800
  51 Fluorochlorocarbons
(Pyrotec tube)		 20-800
  51L Fluorochlorocarbons
(Pyrotec tube)		 36-97.2
1.8-36
2,2-Dichloro-1,1,1- trifluoroethane (R123) CHCI2CF3 51 Fluorochlorocarbons
(Pyrotec tube)		 560-1600
14-560
  51L Fluorochlorocarbons
(Pyrotec tube)		 1.4-28
Dichlorvos
C4H7CI2O4P		 132LL Trichloroethylene 0.11-1.8
Diethylamine
(C2H5)2NH		 180 Amines 5.5-110
  180L Amines 0.45-9
Diethylaminoethanol
(C2H5)NCH2CH2OH		 180L Amines 0.6-12
Diethyl benzene
C6H4(C2H5)2		 122L Toluene 2-150
Diethylenetriamine
H2NCH2CH2NHCH2CH2NH2		 180L Amines 0.95-19
Diethylethanolamine
(C2H5)2NC2H4OH		 180 Amines 6-120
Diethyl ether See Ethyl ether    
Diethyl ketone
C5H10O		 142L Butyl acetate 5-513
Diisobutylene
(CH3)3CCH:C(CH3)2		 121 Benzene 45-540
Diisobutyl ketone
[(CH3)2CHCH2]2CO		 102L Hexane 0.2-1%
  91L Formaldehyde 0.58-29
Diisopropylamine
[(CH3)2CH]2NH		 180 Amines 5-100
  180L Amines 0.3-6
Diisopropyl benzene
C6H5N [CH(CH3)2]2		 141L Ethyl acetate 16-108
1,2-Dimethoxyethane
C4H10O2		 114 1-Butanol 100-1030
N,N-Dimethyl acetamide
CH3CON(CH3)2		 184 N,N-Dimethyl acetamide 60-240
5-60
1.5-5
Dimethylamine
(CH3)2NH		 3H Ammonia 1.2-19.2%
  180 Amines 5.5-110
  180L Amines 0.45-9
2-Dimethylaminoethanol
(CH3)2NCH2CH2OH		 180 Amines 6.5-130
  180L Amines 0.65-13
Dimethylaminopropylamine
(CH3)2NCH2CH2CH2NH2		 180 Amines 8-160
  180L Amines 0.6-12
N,N-Dimethylaniline
C6H5N(CH3)2		 181 Aniline 2.5-30
Dimethylbenzene See Xylene    
Dimethyl disulphide
(CH3)2S2		 53 Dimethyl sulphide
(Pyrotec tube)		 0.3-6
Dimethylethanolamine See 2-Dimethylaminoethanol    
N,N-Dimethylethylamine
C2H5N(CH3)2		 180 Amines 4-80
  180L Amines 0.3-6
N,N-Dimethyl formamide
HCON(CH3)2		 183 N,N-Dimethyl formamide 30-90
2-30
0.8-2
2,6-Dimethyl-4-heptanone See Diisobutyl ketone    
Dimethylhydrazine
NH2N(CH3)2		 185 Hydrazine 0.1-2
Dimethyl sulphide
(CH3)2S		 53 Dimethyl sulphide
(Pyrotec tube)		 0.5-10
0.15-0.5
  77 TBM and DMS 1-15mg/m3
1,4-Dioxane
C4H8O2		 159 Tetrahydrofuran 25-144
  163 Ethylene oxide 0.1-6.0%
Dipropylamine
(CH3CH2CH2)2NH		 180 Amines 4-80
  180L Amines 0.35-7
Divinyl benzene
C6H4(CH:CH2)2		 124L Styrene 1-15
Divinyl methoxysilane
(CH2:CH2)2CH3OSi		 113L Isopropyl alcohol 6.5-25.0
Enflurane (2-Chloro-1,1,2- trifluoroethyl difluoromethyl ether) CHCIFCH2OCHF2 51 Fluorochlorocarbons
(Pyrotec tube)		 110-1230
  51L Fluorochlorocarbons
(Pyrotec tube)		 25-145
Epichlorohydrin
CH2OCHCH2CI		 163L Ethylene oxide 1.2-120
1,2-Epoxypropane See Propylene oxide    
Ethanethiol See Ethyl mercaptan    
Ethanol
C2H5OH		 112 Ethanol 2.5-7.5%
0.05-2.5%
0.01-0.05%
  112L Ethanol 100-2000
50-100
Ethyl alcohol See Ethanol    
Ethanolamine (Monoethanolamine)
H2NCH2CH2OH		 180 Amines 7-140
  180L Amines 1.95-39
Ethyl acetate
CH3CO2C2H5		 141 Ethyl acetate 0.1-1.5%
  141L Ethyl acetate 20-800
Ethyl acrylate
CH2:CHCO2C2H5		 141L Ethyl acetate 8.4-336
Ethylamine
C2H5NH2		 180 Amines 5-100
  180L Amines 0.45-9
Ethyl benzene
C6H5C2H5		 122 Toluene 11-330
  122L Toluene 1-70
p-Ethyl benzylchloride
C6H4(C2H5)CH2CI		 131La Vinyl chloride 2.5-50
Ethyl bromide
C2H5Br		 136L Methyl bromide 100-200
10-100
2.5-10
Ethyl chloroformate
CICO2C2H5		 131La Vinyl chloride 7-140
Ethyl chloride
C2H5CI		 138 Methylene chloride 15-150
Ethylene
CH2:CH2		 172 Ethylene 800-1680
25-800
  172L Ethylene 50-100
0.2-50
  103 Hydrocarbons (Lower class) 8.4-16.8%
0.7-8.4%
0.35-0.7%
  171 Acetylene 0.1-2.0%
Ethylene chlorohydrin
CICH2CH2OH		 111L Methanol 80-200
Ethylenediamine
H2NCH2CH2NH2		 180 Amines 14-280
  180L Amines 0.9-18
Ethylene dibromide
BrCH2CH2Br		 136H Methyl bromide 14-210
  136L Methyl bromide 8-80
Ethylene dichloride
CICH2CH2CI		 232 1,2-Dichloroethane 15-39
1-15
  135 1,1,1-Trichloroethane
(Methyl chloroform)		 400-2000
  135L 1,1,1-Trichloroethane
(Methyl chloroform)		 104-1040
Ethylene glycol
HOCH2CH2OH		 165L Ethylene glycol 10-100mg/m3
Ethylene glycol monobutyl ether
CH3(CH2)3OCH2CH2OH		 113L Isopropyl alcohol 200-1000
  113LL Isopropyl alcohol 60-400
Ethylene glycol monoethyl ether
C2H5OCH2CH2OH		 113L Isopropyl alcohol 110-1000
  113LL Isopropyl alcohol 46-460
Ethylene glycol monomethyl ether
CH3OCH2CH2OH		 113L Isopropyl alcohol 75-760
  113LL Isopropyl alcohol 44-440
Ethylene glycol monomethyl ether acetate See 2-Methoxyethyl acetate    
Ethylene oxide C2H4O 163 Ethylene oxide 0.05-3.0%
  163L Ethylene oxide 100-550
1-100
0.4-1
  163LL Ethylene oxide 5-10
0.1-5
Ethyl ether
(C2H5)2O		 161 Ethyl ether 0.04-1.0%
  161L Ethyl ether 400-1120
10-400
Ethylidene chloride See 1,1-Dichloroethane    
Ethyl mercaptan C2H5SH 72 Ethyl mercaptan 5-120
0.5-5
  72L Ethyl mercaptan 30-75
0.5-30
0.2-0.5
  72LN Ethyl mercaptan 25-57.5
0.5-25
0.15-0.5
  70 Mercaptans 5-120
0.5-5
  70L Mercaptans 4-8
0.5-4
0.2-0.5
0.1-0.2
  70LN Mercaptans 4.4-10.4
0.55-4.4
0.25-0.55
0.13-0.25
  71H Methyl mercaptan 100-3800
N-Ethyl morpholine
C6H13NO		 180 Amines 5-100
  180L Amines 0.3-6
Fluorine
F2		 17 Hydrogen fluoride 0.5-50
Fluorotrichloromethane See Trichlorofluoromethane  (R11)    
Formaldehyde
HCHO		 91M Formaldehyde 2000-6400
20-2000
8-20
  91 Formaldehyde 50-100
20-50
2-20
  91L Formaldehyde 5.0-45.0
0.1-5.0
  91LL Formaldehyde 0.05-1
Formic acid
HCO2H		 81 Acetic acid 5.2-130
  81L Acetic acid 0.5-20
Furfural
C5H4O2		 154 Cyclohexanone 2-30
Gasoline (Petrol)
CnHm		 101 Gasoline  (Petrol) 0.6-1.2%
0.03-0.6%
0.015-0.03%
  101L Gasoline (Petrol) 1000-2000
30-1000
  1M Carbon monoxide 0.1-2%
Halothane (2-Bromo-2-chloro- 1,1,1 – trifluoroethane) CF3CHBrCI 51H Fluorochlorocarbons
(Pyrotec tube)		 800-6400
  51 Fluorochlorocarbons
(Pyrotec tube)		 24-960
  51L Fluorochlorocarbons
(Pyrotec tube)		 3-60
Heptane 101 Gasoline (Petrol) 0.6-1.2%
CH3(CH2)5CH3     0.03-0.6%
      0.015-0.03%
  101L Gasoline (Petrol) 1000-2000
      30-1000
  103 Hydrocarbons (Lower class) 0.84-1.68%
      0.07-0.84%
      0.035-0.07%
  105 Hydrocarbons (Higher class) 180-2700
      90-180
Hexamethylenediamine
H2N(CH2)6NH2		 180L Amines 1.55-31
Hexane 102H Hexane 0.6-1.2%
CH3(CH2)4CH3     0.03-0.6%
      0.015-0.03%
  102L Hexane 50-1200
      25-50
      9-25
      3.5-9
  103 Hydrocarbons (Lower class) 0.6-1.2%
      0.05-0.6%
      0.025-0.05%
  105 Hydrocarbons (Higher class) 160-2400
      80-160
Hexone See Methyl isobutyl ketone    
2-Hexyl alcohol
CH3(CH2)3CH(OH)CH3		 141L Ethyl acetate 168-1680
Hexylamine
CH3(CH2)5NH2		 180 Amines 9-180
  180L Amines 0.65-13
Hydrazine
N2H4		 185 Hydrazine 0.1-2
0.04-0.1
Hydrocarbons (Higher Class) 105 Hydrocarbons (Higher class) 200-3000
100-200
Hydrocarbons (Lower Class) 103 Hydrocarbons (Lower class) 1.2-2.4%
      0.1-1.2%
      0.05-0.1%
Hydrogen
H2		 30 Hydrogen 0.5-2%
Hydrogen bromide
HBr		 15L Nitric acid 0.8-16
Hydrogen chloride 14R Hydrogen chloride 200-5000
HCI   (for Low Humidity) 50-200
  14M Hydrogen chloride 500-1000
      20-500
      10-20
  14L Hydrogen chloride 20-76
      1-20
      0.2-1
  8HH Chlorine 1.5-30%
  80 Acid gases 8-160
Hydrogen cyanide 12H Hydrogen cyanide 0.05-1.6%
HCN 12M Hydrogen cyanide 800-2400
      50-800
      17-50
  12L Hydrogen cyanide 60-150
      2.5-60
      1.25-2.5
      0.5-1.25
  12LL Hydrogen cyanide 5-10
      0.2-5
Hydrogen fluoride 17 Hydrogen fluoride 20-100
HF     0.5-20
0.25-0.5
  17L Hydrogen fluoride 10-72
      0.2-10
      0.09-0.2
  17LL Hydrogen fluoride 6.9-24
      3.0-6.9
      0.05-3.0
Hydrogen peroxide
H2O2		 32 Hydrogen peroxide 0.5-10
Hydrogen sulphide 4HT Hydrogen sulphide 20-40%
H2S     2-20%
      1-2%
  4HP Hydrogen sulphide 10-20%
      0.5-10%
      0.25-0.5%
  4HH Hydrogen sulphide 2-4%
      0.1-2%
  4H Hydrogen sulphide 2000-4000
      100-2000
      10-100
  4HM Hydrogen sulphide 800-1600
      50-800
      25-50
  4M Hydrogen sulphide 250-500
      25-250
      12.5-25
  4L Hydrogen sulphide 120-240
      10-120
      1-10
  4LL Hydrogen sulphide 60-120
      2.5-60
      0.25-2.5
  4LK Hydrogen sulphide 20-40
      2-20
      1-2
  4LB Hydrogen sulphide 6-12
      1-6
      0.5-1
  4LT Hydrogen sulphide 2.0-4.0
      0.1-2.0
      0.05-0.1
  45S Hydrogen sulphide, H2S: 60-120
    Sulphur dioxide 2.5-60
    (Separate quantification) 1.25-2.5
Hydrogen sulphide 45H Hydrogen sulphide 4.0-8.0%
+ Sulphur dioxide (Total Quantification)   + Sulphur dioxide 0.2-4.0%
H2S+SO2     0.02-0.2%
4-Hydroxy-4-methyl-2-pentanone See Diacetone alcohol    
Iodine
I2		 9L Nitrogen dioxide 0.2-12
  80 Acid gases 0.12-2.4
Isoamyl acetate
CH3CO2(CH2)2CH(CH3)2		 148 Isoamyl acetate 10-200
Isoamyl alcohol
(CH3)2CH(CH2)2OH		 117 Isoamyl alcohol 5-300
Isobutane 103 Hydrocarbons (Lower class) 0.84-1.68%
(CH3)3CH     0.07-0.84%
      0.035-0.07%
  104 Butane 55-3080
Isobutene
(CH3)2C:CH2		 101L Gasoline  (Petrol) 0.07-2.2%
Isobutyl acetate
CH3CO2CH2CH(CH3)2		 144 Isobutyl acetate 10-300
Isobutyl acrylate
CH2:CHCO2CH2CH(CH3)2		 142L Butyl acetate 5.5-165
Isobutyl alcohol
(CH3)2CHCH2OH		 116 Isobutyl alcohol 10-150
3.7-10
Isooctane
(CH3)3CCH2CH(CH3)2		 101 Gasoline  (Petrol) 0.027-0.54%
Isopentane 103 Hydrocarbons (Lower class) 1.08-2.16%
(CH3)2CHCH2CH3     0.09-1.08%
      0.045-0.09%
Isopentyl acetate See lsoamyl acetate    
Isopentyl alcohol See lsoamyl alcohol    
Isophorone
C9H14O		 154 Cyclohexanone 2-30
Isopropyl acetate
CH3CO2CH(CH3)2		 146 Isopropyl acetate 10-500
Isopropyl alcohol 113 Isopropyl alcohol 2.5-5.0%
CH3CH(OH)CH3 (i-C3H7OH)     0.04-2.5%
      0.02-0.04%
  113L Isopropyl alcohol 50-800
      20-50
  113LL Isopropyl alcohol 200-460
      20-200
Isopropyl amine
(CH3)2CHNH2		 180 Amines 5.5-110
  180L Amines 0.45-9
Isopropyl ether
[(CH3)2(CH)]2O		 141L Ethyl acetate 17.6-704
  161 Ethyl ether 0.018-0.45%
Isopropyl mercaptan
(CH3)2CHSH		 70 Mercaptans 10-240
Isovaleric acid
(CH3)2CHCH2CO2H		 81 Acetic acid 2-50
  81L Acetic acid 0.38-15
LPG (Liquified petroleum gas) 100A LPG 0.02-0.8%
Maleic anhydride
C4H2O3		 81 Acetic acid 0.8-20
Mercaptans
R・SH		 70 Mercaptans 5-120
0.5-5
  70L Mercaptans 4-8
0.5-4
0.2-0.5
0.1-0.2
  70LN Mercaptans 4-8
0.5-4
0.2-0.5
0.1-0.2
2-Mercaptoethanol
HSCH2CH2OH		 75L tert-Butyl mercaptan 0.5-7.5
Mercury vapour
Hg		 40 Mercury vapour 6-13.2mg/m3
0.25-6mg/m3
0.05-0.25mg/m3
Mesityl oxide
(CH3)2C:CHCOCH3		 141L Ethyl acetate 72-1080
Methacrylic acid
CH2:C(CH3)COOH		 81 Acetic acid 1.8-45
  81L Acetic acid 0.35-14
Methacrylonitrile
CH2:C(CH3)CN		 192 Methacrylonitrile 10-32
0.5-10
0.2-0.5
Metaldehyde
(CH3CHO)n		 91L Formaldehyde 0.065-3.25
Methanethiol See Methyl mercaptan    
Methanol
CH3OH		 111 Methanol 1.5-6.0%
0.02-1.5%
0.007-0.02%
0.002-0.007%
  111L Methanol 40-1000
20-40
  111LL Methanol 20-62
2-20
2-Methoxyethyl acetate
CH3CO2CH2CH2OCH3		 113L Isopropyl alcohol 300-1300
1-Methoxy-2-propanol
CH3OCH2CH(OH)CH3		 113LL Isopropyl alcohol 26-260
Methyl alcohol See Methanol    
Methyl acrylate
CH2:CHCO2CH3		 141L Ethyl acetate 7.2-288
2-Methyl allyl chloride
CH2:C(CH3)CH2CI		 131La Vinyl chloride 2.8-55
Methylamine
CH3NH2		 180 Amines 5-100
  180L Amines 0.5-10
N-Methyl aniline
C6H5NHCH3		 181 Aniline 3.5-42
Methyl bromide
CH3Br		 136H Methyl bromide 300-600
20-300
10-20
  136L Methyl bromide 100-200
10-100
2.5-10
  136LA Methyl bromide 18-36
1-18
  136LL Methyl bromide 1.2-3.0
0.1-1.2
2-Methyl-3-butenenitrile
CH2:CHCH(CH3)CN		 191L Acrylonitrile 0.4-12
Methyl tert-butyl ether
CH3OC(CH3)3		 166 Methyl tert-butyl ether 200-660
10-200
Methyl chloride
CH3CI		 51 Fluorochlorocarbons
(Pyrotec tube)		 12-480
  51L Fluorochlorocarbons
(Pyrotec tube)		 32-86.4
1.6-32
Methyl chloroform See 1,1,1-Trichloroethane    
Methyl chloroformate
CICO2CH3		 131La Vinyl chloride 58-1160
Methylcyclohexane
C6H11CH3		 102H Hexane 0.04-0.84%
Methylcyclohexanol
CH3C6H10OH		 119 Methylcyclohexanol 5-100
Methylcyclohexanone
C7H12O		 155 Methylcyclohexanone 50-80
2-50
Methylene chloride
CH2CI2		 138 Methylene chloride 50-500
30-50
  138L Methylene chloride 60-150
10-60
4-10
  51L Fluorochlorocarbons
(Pyrotec tube)		 20-54
1-20
Methylene iodide
CH2I2		 121L Benzene 0.22-22
Methyl ether
CH3OCH3		 161 Ethyl ether 0.034-0.85%
Methyl ethyl ketone
CH3COC2H5		 152 Methyl ethyl ketone 0.02-0.6%
  152L Methyl ethyl ketone 120-384
10-120
  151L Acetone 21-1680
Methyl hydrazine
H2NNHCH3		 185 Hydrazine 0.6-12
Methyl iodide
CH3I		 230H Methyl iodide 15000-34800
6000-15000
100-6000
  230 Methyl iodide 46-108
20-46
1-20
0.5-1
  121L Benzene 0.32-32
Methyl isobutyl ketone
(CH3)2CHCH2COCH3		 153 Methyl isobutyl ketone 0.05-0.6%
  153L Methyl isobutyl ketone 50-130
2.5-50
Methyl isothiocyanate
CH3NCS		 166 Methyl tert-butyl ether 88.3-1766
39.8-796
  141L Ethyl acetate 5.4-216
  234L Methyl isothiocyanate 10-25
0.3-10
0.07-0.3
Methyl mercaptan
CH3SH		 71H Methyl mercaptan 1000-2700
50-1000
20-50
  71 Methyl mercaptan 70-140
2.5-70
0.25-2.5
  70 Mercaptans 3.5-84
0.35-3.5
  70L Mercaptans 4-8
0.5-4
0.2-0.5
0.1-0.2
  70LN Mercaptans 4-8
0.5-4
0.2-0.5
0.1-0.2
Methyl methacrylate
CH2:C(CH3)CO2CH3		 149 Methyl methacrylate 200-500
10-200
N-Methyl morpholine
CH3N(C2H4)2O		 180 Amines 5-100
  180L Amines 0.3-6
4-Methyl pyridine
C6H7N		 182 Pyridine 0.38-10.5
N-Methyl pyrrolidone
C5H9NO		 180 Amines 13.5-270
Monochlorobenzene See Chlorobenzene    
Morpholine
NH(C2H4)O		 180 Amines 9-180
  180L Amines 0.5-10
Naphthalene
C10H8		 60 Phenol 0.5-14
Nitric acid
HNO3		 15L Nitric acid 20-40
1-20
0.1-1
  80 Acid gases 5-100
Nitroethane
CH3CH2NO2		 52 Nitro compounds
(Pyrotec tube)		 4-240
Nitrogen dioxide
NO2		 9L Nitrogen dioxide 30-125
0.5-30
  10 Nitrogen oxides (NO & NO2)
(Separate quantification)		 2.5-200
  80 Acid gases 0.2-4
  52 Nitrogen compounds
(Pyrotec tube)		 0.5-30
Nitrogen oxide
NO		 10 Nitrogen oxides (NO & NO2)
(Separate quantification)		 5-200
2.5-5
Nitrogen oxides
NO+NO2		 11HA Nitrogen oxides (NO+NO2)
(Total quantification)		 50-2500
  11S Nitrogen oxides (NO+NO2) (Total quantification) 250-625
10-250
5-10
  11L Nitrogen oxides (NO+NO2) (Total quantification) 5.0-14
0.2-5.0
0.06-0.2
0.03-0.06
Nitromethane
CH3NO2		 52 Nitro compounds
(Pyrotec tube)		 5-300
1-Nitropropane
CH3CH2CH2NO2		 52 Nitro compounds
(Pyrotec tube)		 4.2-252
2-Nitropropane
(CH3)2CHNO2		 52 Nitro compounds
(Pyrotec tube)		 3.7-222
Nitrotrichloromethane See Chloropicrin    
Nonane
CH3(CH2)7CH3		 105 Hydrocarbons (Higher class) 260-3900
130-260
Octane
CH3(CH2)6CH3		 101 Gasoline (Petrol) 0.036-0.72%
  105 Hydrocarbons(Higher class) 200-3000
100-200
Oxygen
O2		 31B Oxygen 6-24%
3-6%
Ozone
O3		 18M Ozone 200-400
20-200
4-20
  18L Ozone 3-6
0.6-3
0.05-0.6
0.025-0.05
Pentachloroethane
CI2CHCCI3		 133L Tetrachloroethylene 40-500
1,3-Pentadiene
CH3CH:CHCH:CH2		 174 1,3-Butadiene 250-4000
  174L 1,3-Butadiene 42.5-850
Pentamethylenediamine
H2N(CH2)5NH2		 180L Amines 0.75-15
n-Pentane
CH3(CH2)3CH3		 103 Hydrocarbons (Lower class) 0.9-1.8%
0.075-0.9%
0.0375-0.075%
  104 Butane 30-1680
2-Pentenenitrile
CH3CH2CH:CHCN		 193 2-Pentenenitrile 6-15
0.5-6
  191L Acrylonitrile 0.24-7.2
3-Pentenenitrile
CH3CH:CHCH2CN		 191L Acrylonitrile 0.4-12
Pentyl acetate See n-Amyl acetate    
Perchloroethylene See Tetrachloroethylene    
Petroleum benzine 106 Petroleum naphtha 14-28mg/L
1-14mg/L
0.5-1mg/L
Petroleum distillates See Gasoline (Petrol)    
Petroleum ether 106 Petroleum naphtha 14-28mg/L
1-14mg/L
0.5-1mg/L
Petroleum naphtha 106 Petroleum naphtha 14-28mg/L
1-14mg/L
0.5-1mg/L
Phenol
C6H5OH		 60 Phenol 70-183
25-70
1-25
0.12-1
Phenylethylene See Styrene    
Phosgene
COCI2		 16 Phosgene 5-20
0.1-5
0.05-0.1
Phosphine
PH3		 7H Phosphine 2500-5500
200-2500
  7J Phosphine 500-1000
25-500
2.5-25
  7 Phosphine 50-100
5-50
2.5-5
  7L Phosphine 0.3-5
0.15-0.3
  7LA Phosphine 2.5-9.8
1.5-2.5
0.1-1.5
0.05-0.1
α-Pinene
C10H16		 121 Benzene 95-1140
Propane
CH3CH2CH3		 103 Hydrocarbons(Lower class) 1.2-2.4%
0.1-1.2%
0.05-0.1%
1-Propanethiol See Propyl mercaptan    
Propionaldehyde
CH3CH2CHO		 91L Formaldehyde 0.76-38
  151L Acetone 24-1880
Propionic acid
CH3CH2COOH		 81 Acetic acid 3-75
  81L Acetic acid 0.25-10
Propionitrile
CH3CH2CN		 191 Acrylonitrile 50-1200
Propyl acetate
CH3CO2CH2CH2CH3		 145 Propyl acetate 20-500
Propyl alcohol
CH3(CH2)2OH		 113 Isopropyl alcohol 0.04-2.5%
  113L Isopropyl alcohol 130-560
  113LL Isopropyl alcohol 55-170
Propylamine
CH3(CH2)2NH2		 180 Amines 6-120
  180L Amines 0.5-10
n-Propyl bromide
CH3(CH2)2Br		 136LA Methyl bromide 1-18
Propylene
CH3CH:CH2		 100A LPG 0.02-0.8%
Propylene dichloride
CH3CHCICH2CI		 131La Vinyl chloride 40-800
Propylene imine
CH3CHCH2NH		 180 Amines 5.5-110
  180L Amines 0.35-7
Propylene oxide
CH3CHCH2O		 163 Ethylene oxide 0.065-3.9%
  163L Ethylene oxide 1-100
Propyl mercaptan
CH3(CH2)2SH		 70 Mercaptans 22.5-540
  70L Mercaptans 4.8-9.6
0.6-4.8
0.24-0.6
0.12-0.24
  70LN Mercaptans 1-25
Pyridine
C5H5N		 182 Pyridine 14-36.4
0.5-14
0.2-0.5
Stoddard solvent 128 Stoddard solvent 50-8000mg/m3
Styrene
C6H5CH:CH2		 124 Styrene 500-1500
20-500
10-20
  124L Styrene 25-100
2-25
  153 Methyl isobutyl ketone 0.15-2.3%
Sulphur dioxide
SO2		 5H Sulphur dioxide 4-8%
0.5-4%
0.05-0.5%
  5M Sulphur dioxide 1800-3600
100-1800
20-100
  5L Sulphur dioxide 100-200
5-100
2.5-5
1.25-2.5
  5La Sulphur dioxide 30-60
2-30
1-2
0.5-1
  5LC Sulphur dioxide 10-22
0.25-10
0.1-0.25
  5Lb Sulphur dioxide 5-10
0.2-5
0.1-0.2
0.05-0.1
  45S Hydrogen sulphide, Sulphur dioxide
(Separate quantification)		 SO2: 10-20
0.5-10
0.25-0.5
  80 Acid gases 1.5-30
Sulphur dioxide
+Hydrogen sulphide (Total Quantification)
SO2+H2S		 45H Hydrogen sulphide
+Sulphur dioxide		 4.0-8.0%
0.2-4.0%
0.02-0.2%
Sulphuric acid
H2SO4		 35 Sulphuric acid 0.5-5mg/m3
Sulphuryl fluoride See page 31    
1,1,2,2-Tetrabromoethane
Br2CHCHBr2		 135L 1,1,1-Trichloroethane
(Methyl chloroform)		 0.92-9.2
1,1,2,2-Tetrachloro-1,2- difluoroethane (R112) CCI2FCCI2F 51H Fluorochlorocarbons
(Pyrotec tube)		 1000-3000
125-1000
  51 Fluorochlorocarbons
(Pyrotec tube)		 7-280
  51L Fluorochlorocarbons
(Pyrotec tube)		 20-54
1-20
1,1,2,2-Tetrachloroethane
CI2CHCHCI2		 131L Vinyl chloride 2-30
Tetrachloroethylene
CI2C:CCI2		 133HA Tetrachloroethylene 300-900
20-300
7-20
  133M Tetrachloroethylene 100-220
5-100
2-5
  133L Tetrachloroethylene 25-75
2-25
1-2
  133LL Tetrachloroethylene 3.0-6.6
0.2-3.0
0.1-0.2
  132HH Trichloroethylene 0.075-1.5%
Tetrachloromethane See Carbon tetrachloride    
Tetrahydrofuran
C4H8O		 159 Tetrahydrofuran 50-800
25-50
  159L Tetrahydrofuran 80-232
5-80
  161 Ethyl ether 0.056-1.4%
Tetrahydrothiophene
C4H8S		 76H Tetrahydrothiophene 10-200
  76 Tetrahydrothiophene 1-10
  76M Tetrahydrothiophene 10-100mg/m3
Tetramethylenediamine
H2N(CH2)4NH2		 180 Amines 8.5-170
  180L Amines 0.8-16
Thionyl chloride
SOCI2		 5La Sulphur dioxide 1.44-21.6
Toluene
C6H5CH3		 122 Toluene 300-690
10-300
5-10
  122L Toluene 50-100
2-50
1-2
  161 Ethyl ether 0.02-0.8%
Toluol See Toluene    
o-Toluidine
C6H4(CH3)(NH2)		 181 Aniline 5-60
Trichloroacetic acid
CCI3COOH		 15L Nitric acid 1-37
1,2,4-Trichlorobenzene
C6H3CI3		 131La Vinyl chloride 0.65-13
1,1,1-Trichloroethane (Methyl chloroform) CH3CCI3 135 1,1,1-Trichloroethane
(Methyl chloroform)		 500-2000
100-500
  135L 1,1,1-Trichloroethane (Methyl chloroform) 200-900
20-200
6-20
  171 Acetylene 0.06-1.2%
1,1,2-Trichloroethane
CI2CHCH2CI		 135 1,1,1-Trichloroethane
(Methyl chloroform)		 220-750
Trichloroethylene
CI2C:CHCI		 132HH Trichloroethylene 1-2.5%
0.05-1%
  132HA Trichloroethylene 500-1300
50-500
20-50
  132M Trichloroethylene 100-270
5-100
2-5
  132L Trichloroethylene 25-90
2-25
0.8-2
  132LL Trichloroethylene 4.0-8.8
0.25-4.0
0.125-0.25
Trichlorofluoromethane (R11)
CCI3F		 51H Fluorochlorocarbons
(Pyrotec tube)		 2200-6600
275-2200
  51 Fluorochlorocarbons
(Pyrotec tube)		 8-320
  51L Fluorochlorocarbons
(Pyrotec tube)		 16-43.2
0.8-16
Trichloromethane See Chloroform    
Trichloronitromethane See Chloropicrin    
1,2,3-Trichloropropane
CH2CICHCICH2CI		 135L 1,1,1-Trichloroethane
(Methyl chloroform)		 36-360
1,1,2-Trichloro-1,2,2- trifluoroethane (R113) CCIF2CCI2F 51H Fluorochlorocarbons
(Pyrotec tube)		 2000-6000
250-2000
  51 Fluorochlorocarbons
(Pyrotec tube)		 10-400
  51L Fluorochlorocarbons
(Pyrotec tube)		 20-54
1-20
1,1,1-Trichloro-2,2,2- trifluoroethane (R113a) CCI3CF3 51H Fluorochlorocarbons
(Pyrotec tube)		 1600-4800
200-1600
  51 Fluorochlorocarbons
(Pyrotec tube)		 10-400
  51L Fluorochlorocarbons
(Pyrotec tube)		 16-43.2
0.8-16
Triethylamine
(C2H5)3N		 180 Amines 4.5-90
  180L Amines 0.3-6
Trimethylamine
(CH3)3N		 3M Ammonia 25-250
  180 Amines 3.5-70
  180L Amines 0.25-5
Trimethyl benzene
C6H3(CH3)3N		 123 Xylene 10-300
Valeric acid
CH3(CH2)3COOH		 81L Acetic acid 0.38-15
Vinyl acetate
CH3CO2CH:CH2		 143 Vinyl acetate 100-250
10-100
5-10
  141 Ethyl acetate 0.06-0.9%
Vinyl benzene See Styrene    
Vinyl chloride
CH2:CHCI		 131 Vinyl chloride 1-2%
0.05-1%
0.025-0.05%
  131LB Vinyl chloride 20-70
1-20
0.4-1
  131La Vinyl chloride 20-54
1-20
0.5-1
0.25-0.5
  131L Vinyl chloride 3-6.9
0.2-3
0.1-0.2
Vinyl cyanide See Acrylonitrile    
Vinylidene chloride
CH2:CCI2		 130L Vinylidene chloride 14-40.6
1-14
0.4-1
Vinyl trimethoxysilane
CH2:CHSi(OCH3)3		 113L Isopropyl alcohol 6.5-25.0
Water vapour
H2O		 6 Water vapour 18-32mg/L
1-18mg/L
0.5-1mg/L
  6L Water vapour 1-2mg/L
0.05-1mg/L
  6LP Pipeline Dew Point Tube 40-100LB/MMCF
3-40LB/MMCF
  6LLP Pipeline Dew Point Tube 2-10LB/MMCF
Xylene
C6H4(CH3)2		 123 Xylene 250-625
10-250
5-10
  123L Xylene 100-200
2-100
  100A LPG 0.1-1.2%
  122L Toluene 100-200
4-100
2-4