Below is our new range of UL Approved Smoke Detector Test Equipment by HSI Fire


PurCheck - Non-Flammable Smoke Detector Test Spray

PurCheck® is our totally non-flammable, environmentally safe smoke detector testing spray.

This UL & ULC Listed product is approved for testing both photoelectric and ionization smoke detectors and eliminates the risk of any harmful residue.

  • The only totally non-flammable testing product available, and an alternative to SmokeCheck®
  • Meets all NFPA 72 and International Fire Codes
  • 100% EPA compliant with no HFCs or CFCs
  • Effective: 300+ tests per can
  • UL and ULC Listed
  • Safe on sensors

Model Number Description Datasheets & Manuals
HO-30S PurCheck Smoke Detector Tester, 4.6oz MSDS
User Guide


DustAir - Smoke Detector Cleaning Aerosol

DustAir - Smoke Detector Cleaning Aerosol

DustAir™ is perfect for cleaning smoke detectors and electronic equipment prior to detector testing.

Trigger actuated Duster is not intended for use with Versa-Tools®.

  • 100% pure gas, no added chemicals, solvents or other ingredients
  • No ODP (Ozone Depletion Potential) and negligible GWP (Global Warming Potential)
  • Meets or exceeds all EPA and CARB regulation requirements


Model Number Description Datasheets & Manuals
HO-DUS97-10T DustAir Push Button Spray, 10oz MSDS
User Guide


CoCheck - Environmentally Friendly CO Detector Tester

CoCheck® has been used worldwide since 1997 to safely test carbon monoxide detectors.

After exhaustive testing, HSI Fire & Safety determined the key to functional CO testing is the length of exposure time and the level of concentration. CoCheck®, when used with Versa-Tools® Enclosed Delivery Tools, provides a safe concentration level isolation of CO.

  • 100% natural and non-flammable
  • Environmentally friendly: no HFCs or CFCs
  • Safe packaging prevents accidents or ill effects
  • 3-5 tests per can
  • UL Listed

Model Number Description Datasheets & Manuals
HO-CO2 CoCheck CO Detector Tester, 0.07oz MSDS
User Guide

Assessed to ISO 9001:2015 - Certificate Number 330 DBI BSI Intertek VdS