Allegro Bitrex Sensitivity Solution 2041-11K RKI Portable Multi Gas Monitors RKI Portable they do not require hoses

they do not require hoses and belt packs that often get in the way while working

Easy to recognize pillow pack provides convenient storage case

Built-in concussion proof boot

The scratch-resistant polycarbonate lenses protect against 99 percent of harmful UV-A and UV-B rays

Allegro Bitrex Sensitivity Solution 2041-11K RKI Portable Multi Gas Monitors RKI Portable they do not require hosesReplacement pack of sensitivity solution only. Contains 6 vials (ampules) of Bitrex Sensitivity Solution Applicators. Each applicator contains solution to perform approximately 3 fit tests meaning each pack can do approximately 18 tests. Instructions: With applicator tip pointing upward and away from face, pinch along full length of applicator tube with thumb and forefinger until glass ampoule is completely crushed. Insert applicator tip into opening