Delta F's family of ultra trace moisture analyzers (DF 700 Series) use Tunable Diode Laser Absorption Spectroscopy (TLDAS) technololgy to measure moisture in UHP/semiconductor gases, both inert and reactive. TDLAS works according to the fundamental principle of Beer's Law; thererfore the reading is stable over time and does not require calibration. Other benefits include drift free operation, high accuracy/low maintenance, and unparalleled performance - sub-ppb level readings instantly.

With the TDLAS technology moisture sensor, Delta F analzyers can deliver superior performance:
- 100 ppt senstivity
- 200 ppt low detection limit
- Broad range: 0 to 10 ppm (linear)
- Ambient range of 10 to 40 Celsius
- Fast response and clean up