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Allegro™ Bitrex Fit Test Kit

Offers qualitative OSHA compliant fit testing for disposable and reusable dust and mist respirators

Manufacturer:  Allegro™ 2041

Catalog No. 19-088-508

Please call Customer Service at 1-800-234-7437 or send an email to help@thermofisher.com for assistance.




  • Bitrex creates bitter taste that indicates breakthrough on the respirator fit
  • New disposable glass ampules make pouring solution into nebulizers easier and reduce the chance of contamination
  • Additional Bitrex sensitivity solution ampules and Bitrex test solution ampules also available


Kit includes:

Test Hood

  • Poly-coated
  • Clear viewing window
  • Surged seams
  • Reusable
Sensitivity Nebulizer and Test Nebulizer
  • Natural Latex rubber air bulb for easy operation
  • Converts 5cc (mL) of liquid into aerosol 0.3 to 5.0 microns particle size
  • Complete with extra jet and replaceable plastic caps
  • Break-resistant polycarbonate plastic (Lexan™) that easily disassembles for washing
  • Dimensions: 2 x 2 x 7 in. (5 x 5 x 17.7cm)
Bitrex Sensitivity Solution and Bitrex Test Solution
  • Box of 6 glass ampules each
  • With pre-drilled plastic cap for easy pouring
  • Plastic protection from broken glass
  • One-time use
  • Averages 3 to 5 fit tests per tube
  • Contains 2.5cc of solution




Test hood, 2 x 2 x 7 in. sensitivity nebulizer, test nebulizer, 6 ampules of sensitivity solution and 6 ampules of test solution
1 Ea.
For disposable and reusable dust and mist respirators
Bitrex Fit Test Kit
Product Certifications