ARCHIVED REPORTS_REMOVAL ACTION COMPLETION REPORT

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• Plug in cyclone into its attachment cup • Start pump and run at about 1 liter/minute. Observe real-time concentration (CONC)reading • Increase flow rate very slowly and gradually until CONC reading is one-half of the initial concentration measured without the cyclone. Continue sampling at this flow rate for about one minute and confirm that TWA reading is about one-half of the initial one. Otherwise readjust flow rate. Note final flow rate at which the TWA value has decreased to one-half the value noted without the cyclone. • Enter the final flow rate for which the TWA value is one-half of the initial value into the graph of Fig. 7 and read the corresponding d50 particle size in micrometers. This represents the mass median particle diameter of the aerosol. For example,if the TWA value without the cyclone was 0.8 mg/m3, and the flow rate (with the cyclone attached) required to reduce the TWA to 0.4 mg/m3 is 2 liters/minute, the mass median particle size (as obtained from the curve of Fig. 7) is approximately 5.5 µm. 15.0 CONVERSION BETWEEN personalDataRAM VERSIONS The personalDataRAM user has the option to convert from a model pDR-1000AN to a modelpDR-1200 or vice versa using the appropriate conversion kit.To convert from a pDR-1000AN to a pDR-1200 (i.e., from a passive air sampling configuration to an active one),the user requires the model pDR-ASC conversion kit.To convert from a pDR-1200 to a pDR-1000AN (i.e., from an active air sampling configuration to a passive one),the user requires the model pDR-UB conversion kit. 15.1 Conversion Procedure From pDR-1000AN to pDR-1200 To effect this conversion use model pDR-ASC conversion kit. As you remove parts from the pDR-1000AN, in order to attach the conversion kit components,store these parts carefully for possible future re-conversion. Proceed as follows: • Remove the two screws on the top of the large protective bumper that covers the sensing chamber (see Figure 1). This bumper is not used on the pDR-1200; • Remove the large protective bumper by lifting it firmly upwards and away from the sensing chamber; • Reinsert in the upper two threaded holes and tighten the two screws that had held the protective bumper; • Remove the socket-head screws on the front and back black covers that were exposed by removal of the large top bumper. Lift away the freed front and back covers of the sensing chamber;store them carefully for future use, ensuring that their surfaces are not scratched or marred; 33