Fine Gold (set of CRM 10151-2012)

CRM 10151-2012 is designed for the certification of measurement methods and the calibration of measuring equipment used to determine refined gold composition by spectral methods of analysis, in order to control the accuracy of measurements.

CRM can be manufactured as the following: 

  • discs of 39±1 mm diameter, 5-7 mm high;
  • plates of 30×35 mm, 1mm thickness;
  • shavings of a maximum size of 1 mm.

CRM in the form of shavings is supplied in plastic jars with screw caps. Minimum supplied weight is 20 g.

Lifetime is 50 years.

The assessment of the metrological properties was performed by interlaboratory certification with the following laboratories participated: 

  • JSC "Krastsvetmet", Krasnoyarsk; 
  • JSC "Novosibirsk Refining Plant", Novosibirsk; 
  • JSC "Ekaterinburg Nonferrous Metals Processing Plant", Ekaterinburg; 
  • JSC "Shchelkovsky Secondary Precious Metals Processing Plant", Shchelkovo; 
  • CJSC "Kyshtymsky Electrolytic Copper Plant", Kyshtym.

Each laboratory used several independent methods for analysis.

Metrological properties/characteristics of CRM 10151-2012

Certified values (%)

ElementIndex of certified reference material in the set
CRM Au 1CRM Au 2CRM Au 3CRM Au 4CRM Au 5CRM Au 6
Aluminium 0.0045 0.00040 0.00012
Bismuth 0.0104 0.00028 0.0011 0.00050
Iron 0.0203 0.0011 0.008 0.0031 0.00026 0.00011
Cadmium 0.0044 0.0009 0.0023 0.009 0.00013
Cobalt 0.0028 0.00047 0.0008 0.00014
Silicon 0.0049
Magnesium 0.00033 0.0048 0.0010 0.00021 0.00019
Manganese 0.0011 0.00025 0.0047 0.00074 0.00007
Copper 0.0047 0.00035 0.0061 0.00009
Arsenic 0.00035 0.0078 0.0025 0.0048
Nickel 0.00103 0.0006 0.0042
Tin 0.00101 0.00037 0.011 0.0023
Palladium 0.0021 0.00136 0.0050 0.0110 0.00032
Platinum 0.025 0.00120 0.0050 0.00048
Rhodium 0.00057 0.0014 0.0045 0.00122
Lead 0.0029 0.0005 0.0008 0.0064
Silver 0.0095 0.00041 0.0040 0.00085 0.00025
Antimony 0.0020 0.0011 0.0089
Tellurium 0.0012
Titanium 0.0035 0.00009
Chrome 0.00032 0.00043 0.0072 0.00111
Zinc 0.00009 0.010 0.00111


The range of absolute uncertainty of certified values, Р=0.95, %

Corresponds to the value of the relative expanded uncertainty (U) of certified value for k = 2 (P = 0.95)

ElementIndex of certified reference material in the set
CRM Au 1CRM Au 2CRM Au 3CRM Au 4CRM Au 5CRM Au 6

Aluminic

0.0002 0.00007 0.00004

Bismuth

0.0007 0.00007 0.0002 0.00006

Iron

0.0015 0.0002 0.001 0.0002 0.00004 0.00002
Cadmium 0.0005 0.0001 0.0002 0.002 0.002
Cobalt 0.0002 0.00006 0.0001 0.00003
Silicon 0.0006
Magnesium 0.00003 0.0003 0.0002 0.00004 0.00003
Manganese 0.0001 0.00003 0.0005 0.00005 0.00001
Copper 0.0004 0.00007 0.0010 0.00001
Arsenium 0.00010 0.0006 0.0005 0.0008
Nickel 0.00007 0.0001 0.0004
Tin 0.00012 0.00006 0.001 0.0004
Palladium 0.0001 0.00014 0.0003 0.0007 0.00003
Platinum 0.002 0.00014 0.0003 0.00006
Rhodium 0.00005 0.0002 0.0003 0.00006
Lead 0.0002 0.0001 0.0001 0.0009
Silver 0.0006 0.00003 0.0006 0.00008 0.00004
Antimony 0.0001 0.0001 0.0012
Tellurium 0.0003
Titanium 0.0001 0.00003
Chrome 0.00004 0.00003 0.0003 0.00001
Zinc 0.00003 0.001 0.00015


Additional information

Mass percentage of elements, assigned approximately (%)

Element

Index of certified reference sample in the set

CRM Au 1CRM Au 2CRM Au 3CRM Au 4CRM Au 5CRM Au 6

Aluminium

0.0003 0.0008 0.001

Bismuth

0.0002 0.00006

Iridium

0.0007 0.009 0.008 0.0006

Cadmium

0.00015

Silicon

0.00014 0.0002 0.0014 0.00015

Magnesium

0.00008

Copper

0.00015

Arsenic

0.0011

Nickel

0.00014

Tin

0.0001 0.00008

Palladium

0.00011

Rhodium

0.00006

Lead

0.0001

Silver

0.0010

Antimony

0.0005 0.00011 0.00011
Tellurium 0.0002 0.005 0.0007
Titanium 0.0013 0.0006 0.00006
Chrome 0.00012
Zinc 0.00033 0.0001