Gastec Detection Tubes (PYROTEC detector tubes)
Uses PYROTEC to pyrolytically decompose CFC gas, halogenated hydrocarbon and other gases, converting them into gases that can be measured by detector tube before using a gas sampling pump for measurements.
*Use a combination of a pyro tube, PYROTEC and a gas sampling pump to perform measurements. There are two types of PYROTEC available, No.840 and No.860.
| Chemical to measure | Measurement Range (ppm) | Tube No. |
| Acetonitrile | 3-180 | 52 |
| 2-Chloro-1,1,1,2-tetrafluoroethane (R124) | 45-1,800 | 51 |
| Chlorodifluoromethane (R22) | 2.5-135 | 51L |
| Chlorodifluoromethane (R22) | 25-1,000 | 51 |
| Chlorodifluoromethane (R22) | 0.1-2.4% | 51H |
| 1,1-Dichloro-1-fluoroethane (R141b) | 10-1,000 | 51 |
| 1,1-Dichloro-1-fluoroethane (R141b) | 1.1-22 | 51L |
| Dichlorodifluoromethane (R12) | 11-440 | 51 |
| Dichlorodifluoromethane (R12) | 1.8-97 | 51L |
| Dichlorodifluoromethane (R12) | 325-7,800 | 51H |
| Dichloropentafluoropropane (R225) | 1.4-28 | 51L |
| Dichloropentafluoropropane (R225) | 20-800 | 51 |
| 1,2-Dichloro-1,1,2,2-tetrafluoroethane (R114) | 20-800 | 51 |
| 1,2-Dichloro-1,1,2,2-tetrafluoroethane (R114) | 475-11400 | 51H |
| 1.2-Dichloro-1,1,2,2-tetrafluoroethane (R114) | 1.8-97 | 51L |
| 2,2-Dichloro-1,1,1-trifluoroethane (R123) | 14-1,600 | 51 |
| 2,2-Dichloro-1,1,1-trifluoroethane (R123) | 1.4-28 | 51L |
| Dimethyl disulphide | 0.3-6 | 53 |
| Dimethyl sulphide | 0.25-10 | 53 |
| Enflurane | 20-1200 | 51 |
| Enflurane | 25-145 | 51L |
| Halotane | 3-60 | 51L |
| Halothane | 240-960 | 51 |
| Halothane | 800-6,400 | 51H |
| Methyl chloride | 12-480 | 51 |
| Methyl chloride | 1.6-86 | 51L |
| Methylene chloride | 1-54 | 51L |
| Nitrogen dioxide | 0.5-30 | 52 |
| Nitromethane | 5-300 | 52 |
| 1,1,2,2-Tetrachloro-1,2-difluoroethane (R112) | 7-280 | 51 |
| 1,1,2,2-Tetrachloro-1,2-difluoroethane (R112) | 125-3,000 | 51H |
| 1,1,2,2-Tetrachloro-1,2-difluoroethane (R112) | 1-54 | 51L |
| Trichlorofluoromethane (R11) | 0.8-43 | 51L |
| Trichlorofluoromethane (R11) | 275-6,600 | 51H |
| Trichlorofluoromethane (R11) | 8-320 | 51 |
| 1,1,1-Trichloro-2,2,2-trifluoroethane (R113a) | 0.8-43 | 51L |
| 1,1,1-Trichloro-2,2,2-trifluoroethane (R113a) | 200-4,800 | 51H |
| 1,1,1-Trichloro-2,2,2-trifluoroethane (R113a) | 10-400 | 51 |
| 1,1,2-Trichloro-1,2,2-trifluoroethane (R113) | 1-54 | 51L |
| 1,1,2-Trichloro-1,2,2-trifluoroethane (R113) | 250-6000 | 51H |
| 1,1,2-Trichloro-1,2,2-trifluoroethane (R113) | 10-400 | 51 |
