Water solution of KOH was added to cover the transistors with additions of iodine
KI solution (plastic cup) is used for transistors rinsing
after the leach was complete the leachant and the rinsing waters were combined
HCl was used to acidify the solution
Then SMB was added and solution was left to settle overnight
on the next day....
gold was transferred to a smaller beaker
left to settle
decanted and dried
boiled in HNO3
After boiling in distilled water
stripped magnetic transistors look yellow on this light but it's just reflection.
dried gold powder
Thanks for watching!