OREAS 22c

OREAS 22c has been prepared from quartz sand to which 0.5% iron oxide has been added to produce a pale grey pulp. It is characterised by extremely low background gold of less than 2 parts per billion. It has been certified for Au, Ag, As, Ba, Bi, Cd, Co, Cu, Mo, Ni, Pb, Sb, Sn, Th, U, W and Zn.

Analyte Certified Value 1SD 95% Confidence Limits Low 95% Confidence Limits High Method
Au, Gold (ppb) < 2 IND IND IND Pb Fire Assay
U, Uranium (ppm) 0.18 0.04 0.16 0.19 4-Acid Digestion
Co, Cobalt (ppm) 0.81 0.060 0.77 0.86 4-Acid Digestion
Ag, Silver (ppm) < 0.100 IND IND IND 4-Acid Digestion
As, Arsenic (ppm) < 1.00 IND IND IND 4-Acid Digestion
Ba, Barium (ppm) 4.50 0.70 3.50 5.40 4-Acid Digestion
Cd, Cadmium (ppm) < 0.10 IND IND IND 4-Acid Digestion
Cu, Copper (ppm) 10.0 1.0 9.0 11.0 4-Acid Digestion
Mo, Molybdenum (ppm) 4.30 0.300 4.00 4.60 4-Acid Digestion
Ni, Nickel (ppm) 6.30 1.60 5.10 7.60 4-Acid Digestion
Pb, Lead (ppm) 1.00 0.50 5.00 1.50 4-Acid Digestion
Sb, Antimony (ppm) 0.20 0.04 0.18 0.22 4-Acid Digestion
Sn, Tin (ppm) 0.69 0.08 0.61 0.76 4-Acid Digestion
Th, Thorium (ppm) 0.70 0.060 0.65 0.74 4-Acid Digestion
W, Tungsten (ppm) 0.27 0.08 0.18 0.36 4-Acid Digestion
Zn, Zinc (ppm) 7.50 6.00 8.90 4-Acid Digestion
Downloads
Certificate DataPack SDS NRAM (231 KB)
Archived

This CRM is no longer available.
Information is provided for reference only.

Specifications