The GRG (gravity recoverable gold) test is a widely accepted industry test used to determine the theoretical maximum amount of gold that can be recovered from a sample. It is also the most popular test performed in KRTC facilities.
This test is a multi stage test that utilizes the KC-MD 3 laboratory Knelson Concentrator with sequential grinding. A 30kg of sample crushed to -1.7mm (sample crushing can be arranged at an extra charge) is required to perform a GRG test.
The price of the GRG test includes all assays at an independent lab and a comprehensive metallurgical test report detailing testing results and analysis.
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“In addition to its high throughput capability, low water requirement and outstanding gold recovery, the Knelson has performed excellently in terms of availability and maintenance requirements”.
- Steve Tadie, Mill Manager - How Mine, Zimbabwe
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The GRG (gravity recoverable gold) test is a widely accepted industry test used to determine the theoretical maximum amount of gold that can be recovered from a sample. It is also the most popular test performed in KRTC facilities. 
