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The CEL-240 Series Sound Level Meter is Class 2 accuracy compliant with IEC61672. Ideal for walk through surveys and general occupational noise measurements. The 240 Series is an easy to use instrument with a high resolution graphical display. Implementing the latest digital...

Our personal noise indicators and sound detectors make it easier to measure sound and noise levels in real-time, and determine the level of hearing protection necessary in a particular environment.

From quantitative fit testing equipment to mask integrity testing equipment, TSI helps you comply with regulated standards to ensure your workers' respiratory safety.

TSI Quest and Casella offer a variety of noise dosimeters that are rugged, lightweight and designed for exceptional ease of use.

Casella Air Sampling Pumps enable efficient and accurate air sampling for a variety of industrial and environmental applications.

Extreme heat risks make heat stress monitoring essential for safety and productivity.

Respiratory protection is vital to shielding workers from hazardous airborne contaminants.

Available in the US and Canada. The PortaCount™ Respirator Fit Tester Model 8040-T Kit provides a consistent and objective quantitative respirator fit testing experience. The 8040-T Kit is bundled for your convenience. In addition to the 8040 Respirator Fit Tester, the Kit...

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 EVM Series Particulate Mass Concentration and Air Quality Monitors simultaneously measure particulates and gas concentration in real-time.