22-651 = REPLENISHER for OLD GOLD #99 (2 ozt pack)

Use when casting scrap gold to give it a new luster. No flux is needed. It helps eliminates pink color, porosity, and pits. Each package contains enough to cast approximately 800dwt (40oz) of scrap gold. Purpose #99 Alloy Replenisher is designed to de-oxidize used gold for casting. Can be used for yellow and white gold. Mixing 10K scrap - Add 5 dwt #99, and 3.57 dwt of fine gold for each 100 dwt of 10K scrap being melted. 14K scrap - Add 4 dwt #99, and 5.60 dwt of fine gold for each 100 dwt of 14K scrap being melted. 18K scrap - Add 2 dwt #99, and 6.00 dwt of fine gold for each 100 dwt of 18K scrap being melted. For white gold, the above ratios can be used, but use will be limited to 1 or 2 times due to the yellowing of the white color. If #99 is to be used with scrap and fresh mixes in continuous reuse, use ½ of the amounts listed above. This will prevent excessive buildup of deoxidizers in the metal. Melting Place #99 in bottom of crucible when melting, with scrap on top. When the mixture becomes fluid, stir with a carbon or quartz rod to clean surface of any oxides produced. Fluxing may be necessary, depending on condition of old gold. Boric Acid is the recommended flux. #99 will work best when old metal is clean from heavy surface oxides and investment powder. If metal is contaminated with cuprous oxide (the red copper oxide), only limited positive results can be expected. Notes Use carbon rods only with gas fired furnace or torch melt. Quartz rods should be used for all electric induction melting.