Black stain spreading on keris during vinegar cleaning

[David]

Originally Posted by milandro

There is a lot of empiricism involved in this and very little science. The person who washes my krises all of a sudden went through a phase when the warangan no longer responded en was ineffective. Now he says everything is back to normal.

I don’t think he knows why.

As stated by Alan above, not all realgar is equal. So if you guy uses realgar as his source for arsenic it is quite possible he just obtained an ineffective batch. In it's naturally sourced form there is just no consistency in strength. That is why it is great if you can get a hold of the lab quality arsenic trioxide. It will always be the same strength each and every time.