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

Accuracy that leaves chance in the dust.

Rocklabs is the world-leading producer of high-quality certified reference materials (CRMs) for the gold, silver, platinum, and palladium minerals industries. Used by laboratories and exploration companies worldwide, our reference materials are an accurate and reliable way to determine quality assurance and control management in conjunction with sample testing. CRMs (also known as laboratory standards), are pulverised rock with known mineral content, suitable for analysis by fire assay or aqua regia digest. The final values are always assigned by an independent statistician, and a certificate, which includes details of the production and characterisation of the reference material, is issued with all sachets and jars. Our professional team of chemists, geologists and statisticians are on hand to advise on the use of reference materials and the analysis of results to enable you to make better mining decisions.

Reference Materials Certified for Pt, Pd and Au

Material

Assigned Values & 95% Confidence Intervals

Packaging

Platinum (ppm)

Palladium (ppm)

Gold (ppm)

PK3

4.291 (+/- 0.046)

6.028 (+/- 0.094)

5.038 (+/- 0.051)

50g sachets, 2.5kg jars

PG04

0.903 (+/- 0.007)

1.196 (+/- 0.014)

1.004 (+/- 0.008)

30g & 50g sachets, 2.5kg jars

PD05

0.430 (+/- 0.005)

0.596 (+/- 0.006)

0.519 (+/- 0.004)

2.5kg jars

PD06

0.424(+/- 0.004)

0.590 (+/- 0.008)

0.507 (+/- 0.004)

30g & 50g sachets, 2.5kg jars

Reference Materials Certified for Au and Ag

Material

Matrix Type

Assigned Values & 95% Confidence Intervals

Packaging

Gold (ppm)

Silver (ppm)

AgAuBlank

Oxide

<0.002

<0.2

50g sachets only

SL107 Sulphide (3.2% S) 5.069 (+/- 0.03) 30.1 (+/- 0.4) 30g & 50g sachets, 2.5kg jars

SN104

Sulphide (3.3% S)

9.182 (+/- 0.057)

46.7 (+/- 0.6)

50g sachets, 2.5kg jars

SN118 Sulphide (3.3% S) 8.917 (+/- 0.055) 49.9 (+/- 0.9) 30g & 50g sachets, 2.5kg jars

SP89*

Sulphide (3.5% S)

18.46 (+/- 0.08)

84.4 (+/- 1.1)

30g & 50g sachets, 2.5kg jars

SP132

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

OxQ132*

Oxide

34.69 (+/- 0.22)

128.5 (+/- 1.9)

50g sachets only

OxQ153

Oxide

34.78 (+/- 0.23)

128.0 (+/- 1.1)

30g & 50g sachets, 2.5kg jars

SQ130

Sulphide (10% S)

39.47 (+/- 0.31)

158.6 (+/- 2.8)

30g & 50g sachets, 2.5kg jars

*certificates available on request

Reference Materials Certified for Au

Material

Matrix Type

Gold (ppm) assigned values
& 95% Confidence Intervals

Packaging

Au Blank111

Oxide

<0.002

50g sachets only

OxA187 Oxide 0.080 (+/- 0.001) 30g & 50g sachets, 2.5kg jars
OxB186 Oxide 0.121 (+/- 0.001) 30g & 50g sachets, 2.5kg jars

OxC152

Oxide

0.216 (+/- 0.002)

50g sachets only

OxC168

Oxide

0.213 (+/- 0.002)

50g sachets, 2.5kg jars

OxC185 Oxide 0.218 (+/- 0.002) 30g & 50g sachets, 2.5kg jars
SC127 Sulphide (2.0% S) 0.225 (+/- 0.002) 50g sachets only
SC129 Sulphide (2.0% S) 0.231 (+/- 0.002) 30g & 50g sachets, 2.5kg jars

OxD157

Oxide

0.399 (+/- 0.004)

50g sachets only

OxD169

Oxide

0.456 (+/- 0.004)

30g & 50g sachets, 2.5kg jars

OxD183 Oxide 0.453 (+/- 0.003) 30g & 50g sachets, 2.5kg jars
OxD184 Oxide 0.414 (+/- 0.003) 30g & 50g sachets, 2.5kg jars
SE125 Sulphide (2.3% S) 0.618 (+/- 0.004) 30g & 50g sachets, 2.5kg jars
OxE182 Oxide 0.663 (+/- 0.004) 30g & 50g sachets, 2.5kg jars

OxF165

Oxide

0.857 (+/- 0.005)

50g sachets

OxF181

Oxide 0.814 (+/- 0.006) 30g & 50g sachets, 2.5kg jars

SF141*

Sulphide (2.5% S)

0.883 (+/- 0.008)

30g & 50g sachets, 2.5kg jars

OxG179

Oxide 1.063 (+/- 0.009) 2.5kg jars only
OxG191 Oxide 1.093 (+/- 0.007) 30g & 50g sachets, 2.5kg jars
OxG180 Oxide 0.971 (+/- 0.009) 50g sachets only
OxG189 Oxide 0.987 (+/- 0.008) 30g & 50g sachets, 2.5kg jars

SG102

Sulphide (2.6% S)

0.997 (+/- 0.008)

2.5kg jars only

SG113

Sulphide (2.6% S)

1.024 (+/- 0.006)

2.5kg jars only

SG115 Sulphide (2.6% S) 1.017 (+/- 0.005) 2.5kg jars only

OxH178

Oxide

1.291 (+/- 0.008)

50g sachets, 2.5kg jars

OxH188*

Oxide 1.318 (+/- 0.012) 50g sachets only
OxH199* Oxide 1.323 (+/- 0.011) 30g & 50g sachets, 2.5kg jars

SH82*

Sulphide (2.8% S)

1.333 (+/- 0.007)

50g sachets only

SH98*

Sulphide (2.7% S)

1.400 (+/- 0.008)

30g & 50g sachets, 2.5kg jars

SH140* Sulphide (2.6% S) 1.256 (+/- 0.0011) 30g & 50g sachets, 2.5kg jars

Oxi164

Oxide

1.790 (+/- 0.011)

50g sachets, 2.5kg jars

Oxi177 Oxide 1.811 (+/- 0.013) 30g & 50g sachets, 2.5kg jars

Si81

Sulphide (3.0% S)

1.790 (+/- 0.008)

50g sachets, 2.5kg jars

Si96* Sulphide (3.0% S) 1.801 (+/- 0.009) 30g & 50g sachets, 2.5kg jars

OxJ176

Oxide 2.385 (+/- 0.016) 30g & 50g sachets, 2.5kg jars

SJ111

Sulphide (3.0% S)

2.812 (+/- 0.021)

2.5kg jars only

SJ121

Sulphide (3.0% S) 2.715 (+/- 0.021) 30g & 50g sachets, 2.5kg jars
Hi Sil K6 Sulphide (1.0% S) 3.446 (+/- 0.033) 30g & 50g sachets, 2.5kg jars
SK137 Sulphide (3.0% S) 4.089 (+/- 0.033) 30g & 50g sachets, 2.5kg jars
OxK175 Oxide 3.843 (+/- 0.023) 50g sachets only
OxK197 Oxide 3.753 (+/- 0.029) 30g & 50g sachets, 2.5kg jars
SL136 Sulphide (3.2% S) 5.899 (+/- 0.039) 30g & 50g sachets, 2.5kg jars

OxL159

Oxide

5.849 (+/- 0.042)

50g sachets only

OxL196 Oxide 5.818 (+/- 0.056) 30g & 50g sachets, 2.5kg jars

SN103

Sulphide (3.3% S)

8.520 (+/- 0.047)

50g sachets only

SN135 Sulphide (3.3% S) 8.510 (+/- 0.072) 30g & 50g sachets, 2.5kg jars
SN117 Sulphide (3.3% S) 8.443 (+/- 0.036) 50g sachets only
OxN173 Oxide 7.668 (+/- 0.046) 30g & 50g sachets, 2.5kg jars

HiSilP3*

Sulphide (2.0% S)

12.24 (+/- 0.071)

2.5kg jars

HiSilP5 Sulphide (2.0% S) 12.05 (+/- 0.064) 30g & 50g sachets, 2.5kg jars
OxP133* Oxide 15.14 (+/- 0.08) 50g sachets only

OxP158

Oxide

15.150 (+/- 0.106)

2.5kg jars only

OxP194 Oxide 15.10 (+/- 0.8) 30g & 50g sachets, 2.5kg jars

SP116

Sulphide (3.5% S) 18.091 (+/- 0.103) 2.5kg jars only
SP122 Sulphide (3.5% S) 18.044 (+/- 0.122) 50g sachets only
SP133* Sulphide (3.5% S) 18.14 (+/- 0.11) 30g & 50g sachets, 2.5kg jars
OxQ115 Oxide 25.22 (+/- 0.18) 50g sachets only
OxQ170 Oxide 24.939 (+/- 0.182) 30g & 50g sachets, 2.5kg jars

SQ87*

Sulphide (3.5% S)

30.87 (+/- 0.21)

50g sachets only

SQ131 Sulphide (3.5% S) 30.68 (+/- 0.23) 30g & 50g sachets, 2.5kg jars

*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

For mine material or exploration targets that have an unusual matrix, we may be able to produce a custom reference material for you. We use only known, stable materials and screened minerals with finely divided gold to match your matrix. The matrix-matched mineral components will be blended and packaged to your preference in sachets or jars, and a formal homogeneity test carried out. Samples can be sent out for consensus testing and a formal certificate can be supplied if required.

Certified Reference Material Enquiry

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