Gold Precipitation Kit 2lb Sodium Metabisulfite SMB Gold Refining Recovery

2 lb Sodium Metabisulfite (SMB) – Gold Precipitant for Gold Refining

Recover dissolved gold efficiently with this 2 lb Sodium Metabisulfite (SMB) Gold Precipitant, commonly used during the aqua regia gold refining process. Sodium Metabisulfite is one of the most widely used chemicals for precipitating dissolved gold from refining solutions.

When added to a prepared refining solution, sodium metabisulfite releases sulfur dioxide which causes dissolved gold to fall out of solution as fine gold powder. The recovered gold can then be filtered, washed, dried, and melted into refined metal.

This larger quantity is ideal for refiners processing scrap jewelry, electronic waste, and other gold-bearing materials.

Product Details

2 lb Sodium Metabisulfite (SMB) – GTE Gold Precipitant

• Used to precipitate dissolved gold from aqua regia and gold chloride solutions

• Commonly used in gold refining and precious metal recovery

• Ideal for scrap gold refining and e-waste recovery

• Packaged for convenient use in refining applications

Common Applications

• scrap gold refining

• electronic waste gold recovery

• aqua regia refining processes

• precious metal recycling

• hobby and professional gold refining

How It Is Used

During the gold refining process:

Gold is dissolved into solution using refining methods such as aqua regia.

The solution is prepared and neutralized as needed.

Sodium Metabisulfite (SMB) is added to precipitate dissolved gold from solution.

The gold settles as a fine powder which can be filtered and melted into refined gold.

Additional Information

• Fresh refining chemical

• Suitable for common gold recovery methods

• Used by refiners, jewelers, and precious metal recyclers