... Particle Counter Features:1. 1 cfm (28.3 lpm) flow rate2. Large LCD display3. 2 counting modes()4. Six particle ... .5, 1.0, 2.0, 3.0, 5.0µm)5. Date and time display6. Federal Standard 209E Calculation 7 ... .5, 1.0, 2.0, 3.0, 5.0(µm)Sample Period1min~10minClockDate and TimeCounts DataTotal Counts, Counts/ft3 and ... 0 KgOptional accessoriesSerial port(RS232/485) LCD screen & big flow rate Air Particle Counter