Labtron Portable Airborne Particle Counter is a 6-channel, microcomputer-controlled unit. It simultaneously counts particles in 6 size ranges (0.3 µm to 10.0 µm) with real-time monitoring and a flow rate of 0.1 CFM (2.83 L/min). Suitable for Class 100 to Class 300,000 testing, it uses laser sensor-based detection.