mukhlisinfebrianto0307
New member
- Joined
- Apr 8, 2022
- Messages
- 2
good afternoon sir... let me ask.. i have the material that i have mashed.. after i grind it with fineness mesh which is really fine.. i put it in a pyrex glass and give AR.. after i deposit it i strain and I neutralized it with urea.. after I neutralized it I added water 4 times from AR material.. then I precipitated it with SMB.. I stirred. In the solution I put the copper wire.. I waited all night but there was no gold deposit.. where is my mistake .. ask for guidance from people who have succeeded because I am a beginner