Clarity Watermark Fluid highlights changes in density created by a watermark or a repair, but do not allow the printed image on the face of the stamp to bleed through. The image of the watermark is therefore clearly visible. Clarity was designed to evaporate slowly to allow time to study the watermark. It leaves no residue following evaporation.
Clarity contains no solvents, no CFCs, no HCFCs and will not affect inks, adhesives or taggents on the stamp. It is made from non-flammable, non-toxic and non-hazardous materials.
It is by far the best watermark fluid available and the ONLY watermark fluid recommended by the AMERICAN PHILATELIC SOCIETY