Gold Precipitation Kit Sodium Metabisulfite SMB Urea Gold Refining Stannous

Comprehensive Overview of the Gold Precipitation Kit

Gold Precipitation & Testing Kit – SMB Gold Precipitant + Urea + Stannous Chloride

Complete the final stages of the gold refining process with this Gold Precipitation & Testing Kit. This bundle includes the essential chemicals used to neutralize excess nitric acid, verify dissolved gold in solution, and precipitate gold from aqua regia.

Designed for refiners working with scrap gold, jewelry, electronics, and e-waste, this kit provides the core chemicals used during the gold recovery stage.

What’s Included

1 lb Sodium Metabisulfite (SMB) – GTE Gold Precipitant

Sodium Metabisulfite is commonly used to precipitate dissolved gold from aqua regia and gold chloride solutions. When mixed with water, it releases sulfur dioxide which selectively causes gold to fall out of solution as fine gold powder.

1 lb JSP Urea - Nitric Neutralizer

Urea is used to neutralize excess nitric remaining in aqua regia before precipitation. Proper neutralization helps ensure efficient gold recovery when SMB is added.

Stannous Chloride JSP Gold Testing Solution

Stannous chloride is used to test refining solutions for dissolved gold. A small drop placed on a testing surface will react with the solution to confirm the presence of gold before precipitation.

How the Process Works

During the aqua regia refining process:

Scrap gold is dissolved into solution.

Stannous chloride is used to confirm gold is present in the solution.

Urea neutralizes excess nitric.

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

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

Ideal For

• Scrap gold refining

• E-waste gold recovery

• Aqua regia refining

• Precious metal recycling

• Hobbyist and professional refiners

Additional Information

• Fresh refining solutions

Key Components of the Gold Precipitation Kit

The Gold Precipitation Kit comes equipped with essential reagents such as sodium metabisulfite (SMB), urea, and stannous chloride, designed specifically for efficient gold refining. Sodium metabisulfite acts as a powerful reducing agent to facilitate gold precipitation from solution, while urea neutralizes residual nitric acid to optimize the refining environment. Stannous chloride enhances the purity of the recovered gold. Together, these components create a balanced and effective kit, ensuring a high yield of refined gold suitable for industrial or hobbyist use.

How the Gold Precipitation Kit Works in Gold Refining

The Gold Precipitation Kit simplifies the process of separating gold from aqua regia solutions by chemically reducing dissolved gold ions. When added to a gold-bearing solution, sodium metabisulfite triggers precipitation, turning the gold into a solid form. Urea is then applied to safely neutralize excess acids that can damage equipment or lower final purity. Stannous chloride is used to remove impurities, resulting in highly refined and pure gold. This process is efficient, cost-effective, and environmentally considerate for gold recovery.

Advantages of Using This Gold Precipitation Kit

Utilizing the Gold Precipitation Kit offers numerous benefits including consistent, high-purity gold recovery, ease of use, and chemical stability. The carefully balanced formulation reduces processing time and waste while maximizing yield. Its components are packaged for safe handling and long shelf life, making it ideal for both small-scale refiners and larger operations. Additionally, the kit supports environmentally responsible refining by minimizing hazardous byproducts and simplifying waste management, thereby contributing to safer and more sustainable gold recovery practices.