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 : F
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)
Fluorine F2 17 Hydrogen fluoride 1.25-50 1 3 H 1
Fluorotrichloromethane :
Trichlorofluoromethane
(R11)
CCl3F
51H Fluorochlorocarbons
(Pyrotec tube)
2200-6600 1 3 + C 100
275-2200 2
51 Fluorochlorocarbons
(Pyrotec tube)
8-320 1 3 +
51L Fluorochlorocarbons
(Pyrotec tube)
16-43 1 3 +
0.8-16 2
Formaldehyde
HCHO
91 Formaldehyde 20-100 1/2 3 + C 0.3
20-50 1
2-20 2
91M Formaldehyde 2000-6400 1/2 2* -
20-2000 1
8-20 2
91L Formaldehyde 5-40 1 3* T
0.1-5 5
91LL Formaldehyde 0.05-1 5 1* T
Formic acid
HCO2HFuran
81 Acetic acid 5.2-130 1 3 H 5
81L Acetic acid 0.5-20 1 2* T
Furfural
C5H4O2
154 Cyclohexanone 2-30 4 2* T 2
T:Temp Correction H:Humidity Correction *:Refrigerator Store Mesh:Correction Factor/Chart
 
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