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Flux Cleaning Salts
Post braze cleaning of the brazed joint can sometimes present a problem. The traditional method has been to use dilute sulphuric acid.
Transportation difficulties, sealed batteries and legislation relating to its transport and disposal have made it more difficult for the model engineer to obtain and use it.
CuP Alloys introduce their flux cleaning salt.
It is non-toxic, can be sent by post and there are no disposal problems. It can be put down any drain.
Mix 40gm of salt with 1 litre of water. Immerse the brazed joints for approx 30 minutes. Remove and rinse with cold water to leave a component clean and free of flux residues.
Safety Considerations
Although non-toxic the salts are irritating to the eyes, and skin. In case of contact with eyes wash with plenty of water and seek medical advice. Salts contain Citric Acid.
The pickling solution can under certain circumstances develop unsightly algae on the surface. Prevent this by adding a few drops of domestic bleach to the solution.
The salts and solution present no danger to children or pets.
Spent solution can be simply washed down the sink.
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