Along with the RAAS2.5-200 Audit Sampler, the Single Filter RAAS2.5-100 (RFPS-0598-119) and the Sequential Sampler RAAS2.5-300 (RFPS-0598-120) have US EPA Designation. Andersen Instruments, Inc.ersen contends that it currently is the only manufacturer awarded a U.S. EPA contract for all four required types of PM2.5 monitors. These include the three FRM types plus a filter pack style speciation monitor, which currently is being evaluated by EPA.
The company claims that preliminary data from RTI show good correlation between the FRM PM2.5 samplers and the PM2.5 channels in the Andersen Speciation Monitor. (Speciation sampling sites are Phoenix, AZ; Philadelphia, PA; RTP, NC; and Rubidoux, CA.)
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