Gas or Vapour
to be Measured
Chemical Formula |
Réf
tube |
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 |
SeeTrichlorofluoromethane(R11) |
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 |
| 93 |
Acrolein |
0.025-2% |
1 |
2* |
T |
Formic acid
HCO2HFuran |
81 |
Acetic acid |
5.2-130 |
1 |
3 |
H |
5 |
Furfural
C5H4O2 |
154 |
Cyclohexanone |
1.1-16.5 |
4 |
2* |
T |
2 |
T:Temp Correction H:Humidity Correction +:Twin Tubes ++:Nine Tubes *:Refrigerator Store
| Mesh:Correction Factor/Chart |
