Yef
Member
Dear Sir,
Can someone help me for exact formula to make testing acid for gold 18k and 14k.
I tried many times using commercial HNO3 and HCl acids. But in vain.
Thanks in advance.
Yef
Can someone help me for exact formula to make testing acid for gold 18k and 14k.
I tried many times using commercial HNO3 and HCl acids. But in vain.
Thanks in advance.
Yef