RANGER-An acid free, non-toxic stamp cleaner specially developed for clear acrylic and photopolymer stamps. This cleaner is a gentle yet effective cleanser that will not deteriorate clear stamps. It will remove both waterbased and water resistant ink from clear stamps, however, it will not remove discoloration caused by certain dyes and pigments. Contains 2 fluid ounces. Non-toxic and acid free. Conforms to ASTM D4236.