OREAS 21j

OREAS 21j has been prepared from quartz sand to which 0.5% iron oxide has been added to produce a pinkish-tan coloured pulp. This colouring gives the material an appearance of oxide origin (i.e., light orange-brown clay or light iron ore colour). It is characterised by extremely low background gold of less than 1 ppb (parts per billion; 1 x 10-9) ≡ µg/kg.

Note: Analyte values are indicative only and may change when certified.
Analyte Indicative Value 1SD Expanded Uncertainty Low Expanded Uncertainty High Method
Au, Gold (ppb) < 1.0 IND IND IND Pb Fire Assay
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