^Rae SYSTEMS by Honeywell Humidity Filtering II Tube For MiniRAE 3000 and Other Photoionization Detectors The Humidity Filtering II Tube dries the sample gas entering pumped instruments. It is particularly suited for removing humidity effects on photoionization detectors (PIDs) while making VOC measurements, and typically lasts for about a half hour of continuous readings. The Humidity Filtering II Tube utilizes a solid adsorbent to remove moisture without impacting the detection and measurement of most VOCs. KEY FEATURES Accurate • Enables continuous reading of VOCs under extremely humid conditions for about one half hour (per tube) at room temperature • Prevents drifting readings at high humidity when the sensor is dirty. Versatile • Attaches to the Flex-I-Probe™ inlet with the same adapter used for ppbRAE 3000 VOC zeroing tubes. • Especially useful for measuring chlorinated solvents and fuels under high humidity conditions as are often encountered during soil and water remediation. • Can be used with other instruments having a built-in pump such as MiniRAE Lite, ppbRAE 3000, UltraRAE 3000, MultiRAE Lite, MultiRAE and MultiRAE Pro when humidity is an issue, when using a PID or making low-level LEL sensor measurements. • Caution: Absorbs some compounds such as ammonia and slows the response of heavy compounds, especially at low concentrations or low temperatures. (Check RAE Systems' Technical Note TN-178 for adapter connections or for further details.) APPLiCATiONS Use with photoionization detectors where humidity effects need to be removed during applications such as: • Soil and water remediation • VOCs in landfill sites • Facilitates quick, on-the-spot measurements of many gases and vapors • Extends the time needed between sensor cleanings

Humidity Filtering II TubeFor MiniRAE 3000 and Other Photoionization Detectors Table 1. Effect on VOC Response Note: The contents of the tubes are non-hazardous, but may absorb hazardous components from the sample gas. WORLDWIDE SALES OFFICES USA/Canada 1.877.723.2878 Europe +45.86.52.51.55 CORPORATE HEADQUARTERS RAE Systems by Honeywell 3775 North First Street San Jose, CA 95134 USA [email protected] DS-1014-04