Who better than Henkel to describe their own products? Here's what their brochure says about the 871 Touch-N-Prep Pen: "Henkel developed Alodine 871 coating with the convenient Touch-N-Prep applicator pen to provide a clean, easy-to-use method of repairing conversion coatings on aircraft and aircraft part surfaces.
The unique Alodine 871 Touch-N-Prep no-rinse conversion coating effectively repairs bare aluminum substrates to prevent corrosion. It does not require rinsing, and can be air-dried or force-dried with hot air.
The high-density acrylic tip of the Touch-N-Prep pen can be modified with a single-edge razor blade to form any shape. The design of the Touch-N-Prep Dry pen allows repair of hard-to-reach places or the underside of aircraft. This new application method controls the amount of coating applied to the surface. Use Alodine 871 Touch-N-Prep sparingly – a little goes a long way. This optimized application method greatly reduces the amount of chemical used and generates no secondary waste associated with other repair methods.
Touch-N-Prep coatings represent a dramatic environmental improvement over current methods of chemical coatings touch up. The easy-to-use, dry-in-place coating is a cost-effective and safe method of touch-up repairs of aircraft and aircraft part surfaces.