Certified Reference Materials

Rocklabs Certified Reference Materials are recognised as being the most accurate and reliable reference materials globally and certified for Gold, Silver and Platinum Group Elements

Reference Materials Hero 1440x1440

Also known as laboratory standards, Reference Materials, are pulverised rock with known gold content suitable for analysis by fire assay, aqua regia dissolution or cyanide dissolution. They are low-cost aids used by laboratories and exploration companies for quality assurance and quality control management.

Rocklabs Reference Materials are recognised as being the most accurate and reliable reference materials globally and certified for Gold, Silver and Platinum Group Elements. The certificate, which includes details of the production and characterisation of the Reference Material, is issued with each consignment of sachets or jars sold.

Scott has a team of chemists, geologists and statisticians to advise on the use of the reference materials and the analysis of results. Typically, exploration and mine geologists can submit one sachet with each batch of samples they send to the laboratory for gold analysis, or one sachet with every 50 samples (for large batches). Our broad range of Au, Au-Ag and Pt-Pd-Au are available in 30, 50 and 100-gram sachets or 2.5 kg jars.

A significant amount of work goes into certifying the homogeneity, accuracy and precision of the assigned analyte concentration. An international proficiency test (round robin) is run for each manufacturing cycle, typically involving, 50-60 well known mining laboratories from around the world. The final values are assigned by an independent Statistician.

Reference Materials Certified for Pt, Pd and Au

Material

Assigned Values & 95% Confidence Intervals

Packaging

Stock Level

Platinum (ppm)

Palladium (ppm)

Gold (ppm)

(2.5kg jar)

PK3

4.291 (+/- 0.046)

6.028 (+/- 0.094)

5.038 (+/- 0.051)

30g & 50g sachets, 2.5kg jars

High

PG04

0.903 (+/- 0.007)

1.196 (+/- 0.014)

1.004 (+/- 0.008)

30g & 50g sachets, 2.5kg jars

High

PD05

0.430 (+/- 0.005)

0.596 (+/- 0.006)

0.519 (+/- 0.004)

30g & 50g sachets, 2.5kg jars

Low

PD06

0.424(+/- 0.004)

0.590 (+/- 0.008)

0.507 (+/- 0.004)

30g & 50g sachets, 2.5kg jars

High

Reference Materials Certified for Au and Ag

Material

Matrix Type

Assigned Values & 95% Confidence Intervals

Packaging

Stock Level

Gold (ppm)

Silver (ppm)

(2.5kg jar)

AgAuBlank

Oxide

<0.002

<0.2

50g sachets only

High

SL107Sulphide (3.2% S)5.069 (+/- 0.03)30.1 (+/- 0.4)30g & 50g sachets, 2.5kg jarsHigh

SN104

Sulphide (3.3% S)

9.182 (+/- 0.057)

46.7 (+/- 0.6)

50g sachets, 2.5kg jars

Low

SN118Sulphide (3.3% S)8.917 (+/- 0.055)49.9 (+/- 0.9)30g & 50g sachets, 2.5kg jarsHigh

SP89*

Sulphide (3.5% S)

18.46 (+/- 0.08)

84.4 (+/- 1.1)

30g & 50g sachets, 2.5kg jars

Low

SP132

Sulphide (3.5% S)18.2 (+/- 0.1)84 (+/- 1.5)30g & 50g sachets, 2.5kg jarsHigh

OxQ132*

Oxide

34.69 (+/- 0.22)

128.5 (+/- 1.9)

50g sachets only

Low

OxQ153

Oxide

34.78 (+/- 0.23)

128.0 (+/- 1.1)

30g & 50g sachets, 2.5kg jars

High

SQ130

Sulphide (10% S)

39.47 (+/- 0.31)

158.6 (+/- 2.8)

30g & 50g sachets, 2.5kg jars

Please enquire

*certificates available on request

Reference Materials Certified for Au

Material

Matrix Type

Gold (ppm) assigned values
& 95% Confidence Intervals

Packaging

Stock Level
(2.5kg jar)

Au Blank111

Oxide

<0.002

50g sachets only

High

OxA187Oxide0.080 (+/- 0.001)30g & 50g sachets, 2.5kg jarsHigh

OxB130*

Oxide

0.125 (+/- 0.002)

30g & 50g sachets, 2.5kg jars

Medium

OxB186Oxide0.121 (+/- 0.001)30g & 50g sachets, 2.5kg jarsHigh

OxC152

Oxide

0.216 (+/- 0.002)

50g sachets only

Medium

OxC168

Oxide

0.213 (+/- 0.002)

30g & 50g sachets, 2.5kg jars

Medium

OxC185Oxide0.218 (+/- 0.002)30g & 50g sachets, 2.5kg jarsHigh

SC110

Sulphide (2.0% S)

0.235 (+/- 0.003)

30g & 50g sachets, 2.5kg jars

Please enquire

SC127Sulphide (2.0% S)0.225 (+/- 0.002)30g & 50g sachets, 2.5kg jarsHigh

OxD151

Oxide

0.430 (+/- 0.003)

30g & 50g sachets, 2.5kg jars

Please enquire

OxD157

Oxide

0.399 (+/- 0.004)

50g sachets only

Medium

OxD169

Oxide

0.456 (+/- 0.004)

30g & 50g sachets, 2.5kg jars

Please enquire

OxD183Oxide0.453 (+/- 0.003)30g & 50g sachets, 2.5kg jarsHigh
OxD184Oxide0.414 (+/- 0.003)30g & 50g sachets, 2.5kg jarsHigh

SE114

Sulphide (2.3% S)

0.634 (+/- 0.005)

30g & 50g sachets, 2.5kg jars

Low

SE125Sulphide (2.3% S)0.618 (+/- 0.004)30g & 50g sachets, 2.5kg jarsHigh

OxE150

Oxide

0.658 (+/- 0.005)

30g sachets only

Low

OxE166

Oxide

0.652 (+/- 0.005)

30g & 50g sachets, 2.5kg jars

Please enquire

OxE182Oxide0.663 (+/- 0.004)30g & 50g sachets, 2.5kg jarsHigh

OxF162

Oxide

0.832 (+/- 0.008)

30g sachets only

Low

OxF165

Oxide

0.857 (+/- 0.005)

30g & 50g sachets, 2.5kg jars

Low

OxF181

Oxide0.814 (+/- 0.006)30g & 50g sachets, 2.5kg jarsHigh

SF100

Sulphide (2.5% S)

0.860 (+/- 0.005)

30g & 50g sachets, 2.5kg jars

Please enquire

OxG140

Oxide

1.019 (+/- 0.007)

30g & 50g sachets, 2.5kg jars

Low

OxG141

Oxide

0.930 (+/- 0.005)

2.5kg jars only

Please enquire

OxG179

Oxide1.063 (+/- 0.009)30g & 50g sachets, 2.5kg jarsMedium
OxG191Oxide1.093 (+/- 0.007)30g & 50g sachets, 2.5kg jarsHigh
OxG180Oxide0.971 (+/- 0.009)50g sachets onlyHigh
OxG189Oxide0.987 (+/- 0.008)30g & 50g sachets, 2.5kg jarsHigh

SG99

Sulphide (2.6% S)

1.041 (+/- 0.006)

30g sachets only

Low

SG102

Sulphide (2.6% S)

0.997 (+/- 0.008)

2.5kg jars only

Please enquire

SG113

Sulphide (2.6% S)

1.024 (+/- 0.006)

2.5kg jars only

High

SG115Sulphide (2.6% S)1.017 (+/- 0.005)2.5kg jars onlyHigh

OxH149

Oxide

1.279 (+/- 0.011)

30g sachets only

Low

OxH178

Oxide

1.291 (+/- 0.008)

30g & 50g sachets, 2.5kg jars

High

SH82*

Sulphide (2.8% S)

1.333 (+/- 0.007)

30g & 50g sachets, 2.5kg jars

Please enquire

SH98*

Sulphide (2.7% S)

1.400 (+/- 0.008)

30g & 50g sachets, 2.5kg jars

High

Oxi164

Oxide

1.790 (+/- 0.011)

30g & 50g sachets, 2.5kg jars

Low

Oxi177Oxide1.811 (+/- 0.013)30g & 50g sachets, 2.5kg jarsHigh

Si81

Sulphide (3.0% S)

1.790 (+/- 0.008)

30g & 50g sachets, 2.5kg jars

High

OxJ161

Oxide

2.501 (+/- 0.016)

30g & 50g sachets only

Please enquire

OxJ176

Oxide2.385 (+/- 0.016)30g & 50g sachets, 2.5kg jarsHigh

SJ111

Sulphide (3.0% S)

2.812 (+/- 0.021)

30g & 50g sachets, 2.5kg jars

Please enquire

SJ121

Sulphide (3.0% S)2.715 (+/- 0.021)30g & 50g sachets, 2.5kg jarsHigh

HiSilK4*

Sulphide (1.0% S)

3.463 (+/- 0.026)

2.5kg jars only

Please enquire

Hi Sil K6Sulphide (1.0% S)3.446 (+/- 0.033)30g & 50g sachets, 2.5kg jarsHigh
SK137Sulphide (3.0% S)4.089 (+/- 0.033)30g & 50g sachets, 2.5kg jarsHigh
OxK175Oxide3.843 (+/- 0.023)30g & 50g sachets, 2.5kg jars

Low

OxK197Oxide3.753 (+/- 0.029)30g & 50g sachets, 2.5kg jarsHigh

SL76*

Sulphide (3.0% S)

5.960 (+/- 0.052)

50g sachets only

Low

SL123Sulphide (3.2% S)5.885 (+/- 0.044)30g & 50g sachets, 2.5kg jars

High

SL136Sulphide (3.2% S)5.899 (+/- 0.039)30g & 50g sachets, 2.5kg jarsHigh

OxL159

Oxide

5.849 (+/- 0.042)

30g & 50g sachets, 2.5kg jars

Low

OxL196Oxide5.818 (+/- 0.056)30g & 50g sachets, 2.5kg jarsHigh

SN103

Sulphide (3.3% S)

8.520 (+/- 0.047)

30g & 50g sachets only

Low

SN124

Sulphide (3.3% S)

8.476 (+/- 0.049)

30g & 50g sachets, 2.5kg jars

Please enquire

SN135Sulphide (3.3% S)8.510 (+/- 0.072)30g & 50g sachets, 2.5kg jarsHigh
SN117Sulphide (3.3% S)8.443 (+/- 0.036)30g & 50g sachets, 2.5kg jarsHigh

OxN155

Oxide

7.776 (+/- 0.050)

50g sachets only

Please enquire

OxN173Oxide7.668 (+/- 0.046)30g & 50g sachets, 2.5kg jarsPlease enquire

HiSilP3*

Sulphide (2.0% S)

12.24 (+/- 0.071)

30g & 50g sachets, 2.5kg jars

Please enquire

HiSilP5Sulphide (2.0% S)12.05 (+/- 0.064)30g & 50g sachets, 2.5kg jarsHigh

OxP154

Oxide

15.26 (+/- 0.084)

50g sachets only

Please enquire

OxP158

Oxide

15.150 (+/- 0.106)

2.5kg jars only

Please enquire

OxP172Oxide15.057 (+/- 0.115)30g & 50g sachets, 2.5kg jars

Medium

OxP194Oxide15.10 (+/- 0.8)30g & 50g sachets, 2.5kg jarsHigh

SP73

Sulphide (3.5% S)

18.17 (+/- 0.12)

2.5kg jars only

Please enquire

SP116

Sulphide (3.5% S)18.091 (+/- 0.103)30g & 50g sachets, 2.5kg jars

Please enquire

SP122Sulphide (3.5% S)18.044 (+/- 0.122)30g & 50g sachets, 2.5kg jarsMedium
OxQ170Oxide24.939 (+/- 0.182)30g & 50g sachets, 2.5kg jarsHigh

SQ87*

Sulphide (3.5% S)

30.87 (+/- 0.21)

30g & 50g sachets, 2.5kg jars

Please enquire

SQ131Sulphide (3.5% S)30.68 (+/- 0.23)30g & 50g sachets, 2.5kg jarsHigh

*certificates available on request

Certificates of Analysis for Older Reference Materials

Certificates of Older Reference Materials can be made available upon request.

Please note that "30g" and "50g" are nominal values only. Approximately 2 grams extra are included in each sachet so that it is easier to scoop out the nominal weight without having to scrape out the last traces of powder in the bottom of the sachet.

The sachets are available with either Labcheck or Geocheck labels. Labcheck labels have the name of the Reference Material (e.g. WG2) clearly stated on the label. Geocheck labels do not have the name of the Reference Material stated on the label but do have a unique number for ready identification by the purchaser. Jars are packed in cartons containing 6 jars (i.e. 15 kg) but the minimum order is one jar.

Customised Reference Materials

Do you have mine material or an exploration target that has an unusual matrix? We may be able to produce a Reference Material that has a similar mineral composition to your material. We would make this from materials known to be stable and from screened minerals that contain finely divided gold.

The matrix-matched mineral components will be blended together and packaged in sachets or jars (your preference) and a formal homogeneity test carried out. Samples can be sent out for consensus testing and a formal certificate supplied if required. To obtain a quote, contact us directly or your nearest Rocklabs agent.

Telarc Certfications 1440x880
Rocklabs Certification

Rocklabs products are manufactured under management systems that have been certified by Telarc to the following standards:

  • ISO 9001:2015 Quality Management System
  • ISO 14001:2015 Environmental Management System
  • ISO 45001:2018 Occupational Health and Safety Management System

Certified Reference Material Enquiry

Personal data provided in this form will be processed by Scott to handle your query / request.