The bitter sensitivity solution helps in checking that there's a safe respiratory seal It's used with the 3M FT-30 Fit Test Apparatus to ensure the respirator meets OSHA standards This solution uses denatonium benzoate to produce a bitter taste It allows organizations to meet regulatory fit-testing requirements for respirators This 3M sensitivity solution works with a nebulizer and collar to test the fit of dust masks and respirators 1 Each / Each Product Specifications McKesson # 352740 Manufacturer # FT-31 Brand 3M™ Manufacturer 3M Company Country of Origin Unknown Application Bitter Sensitivity Solution, Bitter Buy American Act (BAA) Compliant No For Use With For 3M™ Qualitative Fit Test Apparatus FT-30 Specifications 55 mL, Clear Bottle Trade Agreement Act (TAA) Compliant No UNSPSC Code 46182009 Latex Free Indicator Not Made with Natural Rubber Latex