Met One Instruments, Inc, offers a variety of Indoor and Controlled Environment monitoring products. Hand-Held and Bench-Top Particle Counters are a convenient and portable way to test your indoor air quality, spot check or verify clean rooms and test air filter efficiency. Our products are cost-effective, accurate and reliable. Our units offer one-touch-monitoring and are extremely user friendly.

Met One Instruments is an ISO 9001:2008 certified company. All units are NIST traceable and compliant to industry standards. All new units include a certificate of calibration and a One-year warranty, guaranteeing our products to be of the highest quality.

Proudly manufactured in the USA, our units are in stock and available for immediate shipment. Met One’s philosophy is to strive for continuous improvement in our quality management system to assure a quality product, delivered on time for total customer satisfaction. Accuracy you demand at an unbelievable value.