Sterling silver Alloy preparing

I am a newcomer to this forum, and salute you, all the veterans. I am
a practicing jewelry making for my fun, and found this forum while
searching for a formulation to prepare for myself Sterling silver
for casting, and include the necessary deoxidizer and grain refiner.
Who can give me the composition for this ?

Thanks.
Dr. Jean Ramon

Dear Jean, United Precious Metals sells all the alloys to mix every
karat and several sterling’s. The deox agents are mixed with the
pure metals or purchased ready to cast. They are at
http://www.unitedpmr.com Best Regards, Todd Hawkinson