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The DustTrak™ II Aerosol Monitor provides real-time aerosol mass readings with gravimetric sampling. For use in occupational hygiene, indoor air quality, outdoor environmental, emissions, remote monitoring and process monitoring.Looking for quick reporting and easier data...

Ammonia (NH3) Module for TSI OmniTrak™ Solution.This product is only available in the US, Canada, United Kingdom, European Union, Switzerland, Norway and Australia. 

The QUESTemp° 44/46/48N utilizes a waterless wet bulb sensor designed for working environments where daily instrument upkeep is difficult.

NOTE: Now Available in the US, Canada, Australia, New Zealand, Guam and Puerto Rico. Coming soon to more regions. TSI Quest™ Edge 7 Personal Noise Dosimeter is a powerful and intuitive instrument designed for identifying hearing loss threats and informing the design of hearing...

Quest™ SoundPro™ SE-DL Series Sound Level Meters come in a variety of models to meet your sound measurement needs. Several models feature octave band analysis, giving you the ability to conduct environmental noise monitoring and noise control evaluation.

The Quest™ Sound Detector SD-200 is a compact, lightweight sound level meter designed for measurement of workplace noise levels.

The P-Trak Ultrafine Particle Counter Model 8525 measures workplace ultrafine particulate levels, as well as helping eliminate indoor air quality or IAQ problems.

The 7545 IAQ Meter simultaneously measures and data logs multiple parameters, including CO, CO2, temperature, humidity; and calculations are dew point, wet bulb temperature, and percent of outside air.

The 9630 VelociCalc is a portable, handheld Multi-Function micromanometer featuring a menu-driven user interface for easy operation. The high-resolution color screen displaying multiple measurements simultaneously in real-time with on-screen prompts to guide you through...

The Air Velocity Transducer 8455 (general purpose) is ideal for both temporary and permanent installations for air velocity measurements in research and development labs, manufacturing processes, and other applications.