Low Gold Material (Oxide Matrix) – <0.002 ppm gold

Produced using a mixture of finely pulverised feldspars and basalt which had been analysed and found to found to have a low gold content, using aqua regia digestion followed by enhanced inductively coupled plasma mass spectrometry. The average of the 24 analyses was 0.4 parts per billion of gold, with the highest value being 0.6 parts per billion gold. This items is supplied in 50g sachets only with a 1 week lead time. Certificate of analysis is available on request.