Flame Ionization Detectors
| MODEL | ANALYZER TYPE | RANGES |
| 4020 | Microprocessor based total trace hydrocarbon analyzer | 0-10, 0-100, 0-1000 ppm HC standard (CH4 equivalent, lower optional ranges available) |
| 4030 | Total hydrocarbon gas analyzer heated for emissions | 0-10, 0-100, 0-1000 ppm THC. Other ranges available. |
| 4060 | Benzene analyzer | 0-100 ppb, 0-1 ppm, 0-10 ppm benzene |
| 4080 | Hydrocarbon in water analyzer |
