Gastec Tubes and Sampling Pump
Short terms quick measuring detector tubes 
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Gas sampling pump kit and accessories
 
 
 
Index of target gases/substances : H
Gas or Vapour
to be Measured
Chemical Formula
Gastec Tube
No. & Name
Measuring
Range
(ppm)
No.of
Pump
Strokes
Shelf
Life
(year)
Note TLV-
TWA,C
(ACGIH)
(ppm)
Halothane(2-Bromo-2-chloro-1,1,1-trifluoroethane)
CF3CHBrCl
51H FluorochloroCarbons
(Pyrotec tube)
800-6400 1 3 T 50
51 FluorochloroCarbons
(Pyrotec tube)
240-960 1 3 +
51L FluorochloroCarbons
(Pyrotec tube)
3-60 2 3 +
Heptane
CH3(CH2)5CH3
101 Gasoline(Petrol) 0.6-1.2% 1/2 3 - -
0.03-0.6% 1
0.015-0.03% 2
101L Gasoline(Petrol) 1000-2000 1 3 -
30-1000 2
103 Hydrocarbons
(LowerClass)
0.84-1.68% 1/2 2 ++
0.07-0.84% 1
0.035-0.07% 2
105 Hydrocarbons
(HigherClass)
180-2700 1 3 -
90-180 2
Hexamethylenediamine
H2N(CH2)6NH2
180L Amines 1.55-31 1 2 T -
n-Hexane
CH3(CH2)4CH3
102H n-Hexane 0.6-1.2% 1/2 3 - 50
0.03-0.6% 1
0.015-0.03% 2
102L n-Hexane 50-1200 1 3 -
10-50 5
103 Hydrocarbons
(LowerClass)
0.6-1.2% 1/2 2 ++
0.05-0.6% 1
0.025-0.05% 2
105 Hydrocarbons
(HigherClass)
160-2400 1 3 -
80-160 2
Hexone :
Methyl isobutyl ketone
(CH3)2CHCH2COCH
3
153 Methyl isobutyl ketone 0.05-0.6% 2 3 T 50
153L Methyl isobutyl ketone 2.5-50 1 1 T
50-130 1/2
2-Hexyl alcohol
CH3(CH2)3CH(OH)CH3
141L Ethyl acetate 75-2400 3 2 T -
Hexylamine
CH3(CH2)5NH2
180 Amines 9-180 1 3 T -
180L Amines 0.65-13 1 2 T
Hydrazine
N2H4
185 Hydrazine 0.1-2 5 3 H 0.01
0.05-0.1 10
Hydrocarbons
(HigherClass)
105 Hydrocarbons
(HigherClass)
200-3000 1 3 - -
100-200 2
Hydrocarbons
(LowerClass)
103 Hydrocarbons
(LowerClass)
1.2-2.4% 1/2 2 ++ -
0.1-1.2% 1
0.05-0.1% 2
Hydrogen
H2
30 Hydrogen 0.5-2% 1 3 - -
Hydrogen bromide
HBr
15L Nitricacid 0.8-16 1 3 H C 3
Hydrogen chloride
HCl
14R Hydrogen chloride
(for Low Humidity)
200-5000 1 3 - C 2
50-200 2-4
14M Hydrogen chloride 500-1000 1/2 3 -
20-500 1
10-20 2
14L Hydrogen chloride 20-76 1/2 3 -
1-20 1
0.2-1 2-5
80 Acid gases 8-160 2 2 -
8HH Chlorine 1.5-30% 1/2 3 -
Hydrogen cyanide
HCN
12H Hydrogen cyanide 0.05-1.6% 1 3 T C 4.7
12M Hydrogen cyanide 800-2400 1/2 3 -
50-800 1
17-50 2
12L Hydrogen cyanide 60-120 1/2 2 H
2.5-60 1
1.25-2.5 2
0.36-1.25 5
12LL   0.2-7 2 2 H
Hydrogen fluoride
HF
17 Hydrogen fluoride 20-100 1 3 H 0.5
0.5-20 4
0.25-0.5 7
17L Hydrogen fluoride 10-72 1 2 H
0.2-10 3
0.09-0.2 5
17LL Hydrogen fluoride 6.9-24 1 2 T
H
3.0-6.9 3
0.05-3.0 5
Hydrogen peroxide
H2O2
32 Hydrogen peroxide 0.5-10 5 3 T 1
Hydrogen sulphide
H2S
4HT Hydrogen sulphide 20-40% 1/2 3 - 10
2-20% 1
1-2% 2
4HP Hydrogen sulphide 10-20% 1/2 3 -
0.5-10% 1
0.25-0.5% 2
4HH Hydrogen sulphide 2-4% 1/2 3 -
0.1-2% 1
4H Hydrogen sulphide 2000-4000 1/2 3 -
100-2000 1
10-100 2-10
4HM Hydrogen sulphide 800-1600 1/2 3 -
50-800 1
25-50 2
4M Hydrogen sulphide 250-500 1/2 3 -
25-250 1
12.5-25 2
4L Hydrogen sulphide 120-240 1/2 3 -
10-120 1
1-10 2-10
4LL Hydrogen sulphide 60-120 1/2 3 -
2.5-60 1
0.25-2.5 2-10
4LB Hydrogen sulphide 6-12 1/2 2  
1-6 1
0.5-1 2
4LT Hydrogen sulphide 2-4 1/2 2* T
0.2-2 1
0.1-0.2 2
4LK Hydrogen sulphie 20-40 1/2 3 -
2-20 1
1-2 2
45S Hydrogen sulphide,
sulphur dioxide
60-120 1/2 3 +
2.5-60 1
1.25-2.5 2
Hydrogen sulphide
+Sulphur dioxide
(Total Quantification)
H2S+SO2
45H Hydrogen sulphide
+Sulphur dioxide
4-8% 1/2 3 - 2
0.2-4% 1
0.02-0.2% 2-10
4-Hydroxy-4-methyl -2-pentanone :
Diacetone alcohol
(CH3)2C(OH)CH2COCH
3
154 Cyclohexanone 2.5-100 2 2* T 50
T:Temp Correction H:Humidity Correction *:Refrigerator Store Mesh:Correction Factor/Chart
 
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