The supplied floor stripper was diluted to 1:20 (5%) and 1:12 (8.3) concentrations using DI water as requested by client. Each solution was applied to a coated floor tile and allowed to soak for 8 minutes. Tiles were coated with J-Green 36 Finish (20% solids) Non-Zinc Floor finish. One tile had 4 coats and the second had 7 coats. The 1:20 dilution was tested on both the 4 and 7 coats and the 1:12 was only tested on the 7-coat tile.
After soaking, the coupons were scrubbed clean using a section of a floor stripping buffing pad. The pad was placed in a Gardner Straight Line washability unit and the unit was run for 50 oscillations. At the end of the scrubbing, the tile was blotted dry with a paper towel and then observed to determine the amount of finish remaining. If the tile was not completely stripped, additional stripper was applied and the unit was run for another 50 cycles. The total number of oscillations to remove the coatings were recorded as a measure of removability.
The method used followed the recommendations for GS 40 (which referenced ASTM D1792-06).