Gold recovery bath - 1 litre

The preparations are based on thiourea. Manufactured from chemically pure reagents and distilled water. This makes them very stable in terms of operating parameters.

1 - Gold recovery bath contains mineral and organic acids in addition to thiourea
2 - Gold recovery bath with brightening agent contains a brightening agent - antipyrine - in addition to thiourea and mineral acid.

After the recovery bath, tumbling is necessary. If gold recovery is carried out well in a bath with a brightening agent, it is even possible to avoid tumbling and certainly to reduce its duration and intensity.

Each precious metal processing plant has its own specific operating conditions and equipment, which makes it necessary to select the operating parameters of the gold recovery bath individually. The general principles are as follows:

- voltage 6 - 12 V
- current density 1 - 5 A/dm² (for a 3g workpiece, current 1 A)
- electrodes made of stainless steel, platinum, graphite or copper
- temperature 80 - 95 ^oC (in case of water jacket heating, water in the jacket should boil)
- add a new batch of preparation as the bath is used up
- move the bath or the workpiece as much as possible
- use as large a surface area as possible for the electrodes (cathodes)
- make sure that the workpiece subject to gold recovery and the electrodes have good contact
- work under extraction ventilation - the fumes have an unpleasant smell

Dilute the contents to a volume of 2 litres with distilled or boiled water.


Once the above-mentioned conditions are fulfilled, adjust the bathing process: time of dehydration, current density, voltage (in exceptional cases). We guarantee that once the conditions are correctly chosen, you will be very satisfied with the use of the gold recovery baths from AG-AU DUBER.

Gold recovery

Some gold is deposited on the cathodes. It can be scraped off from time to time. The remaining gold in the form of a precipitate is at the bottom of the vessel. Gold recovery involves boiling the used bath for as long as possible (adding "normal" water from time to time) to drive off as many chemical compounds as possible from the bath. Then thermally decompose the residual compounds by burning and refining the recovered gold.

Canister capacity: 1 litre.