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  • 2017 CPC Promotion

    LIMITED TIME ONLY  I  30% OFF TRADE-IN TSI IS CALLING ALL CONDENSATION PARTICLE COUNTERS Order a new 375x series butanol condensation particle counter and receive a 30% discount when you send back your old

  • 2018 PortaCount Trade-In Promotion
    Trade-in your existing Respirator Fit Testers and get CREDIT to trade-up to the newest equipment TSI offers!
  • Airflow Wanted Dead or Alive Trade-in Promotion
    Airflow is excited to announce its “Wanted: Dead or Alive” trade-in promotion. We will accept any electronic air velocity meter, micromanometer, rotating vane anemometer, IAQ meter or capture hood, functional or non-functional, as a trade-in for one of the products listed below.
  • Optical Particle Sizer Multi-Unit Promotion

    TSI is offering a multiple unit discount for purchases of two or more Optical Particle Sizers Model 3330. Save up to 15%!

  • Research Instrument Trade-In Promotion

    For select instruments, TSI is offering a trade-in discount of 15% credit towards the purchase of a new instrument, when an equivalent older model is traded in. 

  • Ventilation and IAQ Instrument Trade-in Promotion

    Trade-in your outdated (working or not) ventilation test or IAQ instrumentation (ours and/or our competitors) and get a CREDIT towards the purchase of the newest instrumentation TSI offers.

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