| 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 | 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 | |||
| 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 |
