Sensitivity solution with bitter taste for fit testing. Uses a test solution of denatonium benzoate to produce an extremely bitter-tasting spray. 55 ml bottle. Available with two alternative test solutions as a small percentage of the population is unable to detect sodium saccharine, in which case the bitter solution should be used (or vice versa). For professional use only. 

• Uses a test solution of denatonium benzoate to produce an extremely bitter taste. 
• Supplied in 55 ml bottle. 
• Available in bitter and sweet to cover people who are unable to detect one or the other. 
• Used to test the fit of particulate respirators.