3M Fit Test Adapter, 601, 1/pack The 3M Fit Test Adapter 601 is used to conduct quantitative fit testing on 3M Reusable Respirator Facepieces with bayonet-style cartridge/filter holders. Product Information Brand 3M Part # 7000001945 Origin Country USA Product Type Adapters Extra Product InformationFilters for the 3M Fit Test Adapter 601 are sold separatelyThe correct respirator fit is essential to ensuring the maximum protection possible, and as a result, the greatest safety for those who use it.Product Information3M Particulate Filter (not included) required for fit testingFor specific use on 3M Reusable Respirator Facepieces, 6000 Series, 6500 series and 3M Reusable Respirator Facepieces, 7000 Series, 7500 seriesFor workplace/occupational use onlyPackage contents: adaptor, plastic tubing, suction cups, and a retainer clipUsed to conduct quantitative fit testing on 3M Reusable Respirator Facepieces with bayonet-style cartridge/filter holdersWith respirator fit testing, your respirator can be fitted correctly