The MET ONE 3445+ portable air particle counter is a high-flow, ISO 21501-4 compliant instrument designed for routine environmental monitoring in GMP cleanrooms. It provides high-sensitivity particle counting, flexible data handling for SOP-driven sampling, and robust performance for classification and contamination control.
- High-flow sampling at 100 L/min for rapid, representative measurements.
- Detects particles down to 0.5 μm with standard channels to 10 μm.
- ISO 21501-4 compliance for airborne particle counting accuracy.
- Particle size channels: 0.5, 1.0, 2.0, 3.0, 5.0, 10.0 μm.
- Low coincidence loss: 10% at 5,000,000 particles/m3.
- Lightweight design for portable use; weight without battery approximately 8.65 kg (19.0 lb).
- Rechargeable battery operation for field and point checks (configuration-dependent battery count).