Brush applied Chromate Conversion Coatings

Is it possible to achieve a conversion coating by brush or swab (for small areas) to match MIL-C-5541 class 3 or similar to - def-stan 03-18. If so how and who manufactures the materials?

Ref the Alocrom (Alodine in The United States) range of products (Henkel) there are products available i.e., Brush Alocrom.

We are using chemical named CHROMAL that can be used in 3 ways of dipping, swabbing , brushing & spraying. Fulfills MIL standard (3 classes). The coating can be adjusted from clear up to dark ,according to alloy being processed.

Iridite 14-2 brush on kits are available from Macdermid or its distributors

Just put on rubber rubber gloves ⇦ on eBay or Amazon [affil link] , use a Cotton Swab, or an old cloth, swab on some of the deox solution from the deox tank, then rinse, then using 4 times concentration of whatever chromate you have, swab it on until the yellow color does not wipe off, let cure 24 hours, ship.

We carry out this process on a large number of parts, the solution we use is alocrom 1200 made up to double strength, pre-clean the parts brush on until the correct shade is achieved and rinse off, depending on the size of parts you can air dry or blow dry.

We need sample and data sheet of ELPO chemicals in auto.