Apr 11, 2013 · Is there such thing as a silver acid test color chart? I can't find one anywhere. I have tested between 15-20 lbs of flatware and jewelry and didn't find very much but I only kept …

Dec 20, 2008 · In the forum handbook it lists stannous chloride test colors which are different than Hoke states. The handbook says a platinum solution will show red, and Hoke says it will range …

Feb 28, 2007 · Here are the formulas that came with a test kit I once bought. It came with empty glass bottles and gave the formulas to make up the solutions. 10K - 3/4 ounce, by volume, …

Jan 24, 2013 · The way most scrap gold buyers who buy jewelry by the piece work is they put the karat test needle streak they assume the piece is and then one below it. Then they run a …

Sep 29, 2024 · Pure (or fine) gold is 24 carat; 14 carat is 14/24 (58%) gold by weight, the balance an alloy metal. Test to distinguish gold from non-gold: File a notch in the piece to be tested. …

Feb 21, 2009 · You can use 18k gold testing acid just as you described. If it turns a milky white there is silver. It's not a perfect test, but should be fine for what you want to do. Using either …

Mar 31, 2018 · From "stannous chloride use": The colors should appear with the appropriate color of metal powder, generally black (except gold – chocolate). From what I've read, color also …

Jan 25, 2022 · I started refining 800 ARG silver with 70% nitric acid. diluting it with 50% nitric and 50% diluted water until it dissolved the silver. At first it turned light blue , as I let the solution sit …

Nov 26, 2010 · Jack Nicholson - Mars Attacks - Why Can't We All Just Get Along? ·

Jun 11, 2008 · The color of the test for gold will vary with gold concentration. Purple is the most common, with black (actually a dark purple) being extremely saturated. I dip a cotton swab in …