Quote Originally Posted by alloy2 View Post
From left to right, sample pulled from leach, pdf filter then he cat.

The majority of the comb in he leach is from the DPF filter the green color indicates a combination of Pt / Pd. far right is from the cat, color indicates platinum.

If your wondering why the comb was submitted to the sonic treatment beforehand it removed the carbon and some of the precious metals but most importantly per-conditioned the comb for the leaching process.

My error, it's the chlorine that is giving the leach the green color.