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TSI's IAQ-Calc™ Indoor Air Quality Meters are outstanding instruments for investigating and monitoring indoor air quality (IAQ).

Ozone (O₃) Module for TSI OmniTrak™ Solution.This product is only available in the US, Canada, United Kingdom, European Union, Switzerland, Norway and Australia. 

The Automated Filter Tester Model 8130A continues to be the best solution for testing particulate respirator filters, disposable filtering face pieces, and a wide assortment of filter media. TSI filter testers have been used in quality control and manufacturing by leading...

The Model 131B is a high flow impactor (HFI) ideal for sampling particles at low concentrations (pristine environments), for collecting more mass per stage as compared with conventional MOUDI™ impactors, or for obtaining samples in shorter sampling intervals. 

Soft X-ray charge conditioner designed specifically for use in the Model 3938 Scanning Mobility Particle Sizer (SMPS)

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 Q-Trak XP Indoor Air Quality Monitor Model 7585 unites gas and particle measurements with traditional IAQ parameters—in one lightweight, handheld instrument that is easy to use, configure and calibrate in the field. Designed for IAQ and industrial hygiene professionals...

The Condensation Particle Counter (CPC) 3750-CEN10 is designed in full compliance with EN 16976:2024*. This CPC ensures precise monitoring of ultrafine particles (UFPs) in the atmosphere, meeting the highest standards of accuracy and reliability.

Designed to measure total solid particle number concentrations directly from the tailpipe, whether in the field or during in-use testing.

The Aerosol Electrometer 3068B provides accurate measurements of electrical current and flow rate. It measures total net charge on aerosol particles from 0.002 to 5 µm.