1. Reliable 2. Easy-to-use machine; 3. Portable, 4. Six size channels, 5. Built-in printer Airborne Particle Counter ... , 1.0, 3.0, 5.0, 10µm)Date and time displayFederal Standard 209E Calculation Built-in Printer, Multiple print-modeData ... rate0.1 cfm (2.83 lpm)Sensitivity0.3µmSelf Clean Time≤10minOperating Time8hOutputBuilt-in PrinterEnvironment OperatingTemperature 10~35°C,Relative Humidity ...