3M FT-31 ~ Sensitivity Solution Bitter 7100004635 by 3M $150.51 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Backordered Covid-19 product shortage Product and delivery - on a first-come-first-serve basis. All 3M Respirator sales are final and no cancellations will be processed. No ETAs available due to worldwide shortage 3M Sensitivity Solution FT-31, bitter 3M Sensitivity Solution FT-31 is used to test the sensitivity of the respirator wearer to a bitter solutionIt is used with the 3M Qualitative Fit Test Apparatus FT-30. Brand 3M Origin Country United States