Particle Size Channels: 0.3, 0.5, 1.0, 2.5, 5.0, and 10.0 ïm Flow Rate: 0.1 CFM (ïï2.83 L/min) Counting Efficiency: 50% @ 0.3 ïm; 100% > 0.45 ïm Concentration Limit: Up to 4,000,000 particles/ftï Detection Modes: Cumulative, differential, and concentration counts Additional Measurements: Temperature, relative humidity (optional) Display: 2.8"ï4.3" TFT LCD Data Storage: Up to 5,000ï45,000 sample records, USB or memory card export Power Supply: Rechargeable battery (4ï10 hours) or AC adapter Compliance Standards: ISO 21501-4, ISO 14644-1, JIS B9921 Operating Conditions: +5 C to +40 C; ï95% RH non-condensing