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TSI Instruments Ltd

As an international leader in measurement technology for over 50 years, TSI designs and manufactures precision instruments used for respirator fit testing, indoor air quality,exposure monitoring and other key parameters in the environment.

The PortaCount respirator fit tester is a quantitative fit testing solution to reliably fit test any tight-fitting respirators, even disposables. The instrument eliminates the guesswork associated with tedious and error-prone qualitative fit test methods and allows real-time fit for protection against hazardous environments.

Our occupational hygiene instruments help with the selection and implementation of effective workplace engineering controls, as well as the selection, use, and limitations of personal protective equipment.

The MCERTS certified DustTrak Environmental Monitor is a reliable solution for facilitating long-term outdoor environmental monitoring. The instrument provides near-reference method quality data and can be set up in less than an hour.

UK based service also ensures your instruments are calibrated by TSI in market leading turnaround time.