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Certified Reference Materials
Rocklabs is the world-leading producer of highquality certified reference materials (CRMs) for the gold, silver, platinum, and palladium minerals industries.
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 | Stock Level | ||
Platinum (ppm) | Palladium (ppm) | Gold (ppm) | (2.5kg jar) | ||
4.291 (+/- 0.046) | 6.028 (+/- 0.094) | 5.038 (+/- 0.051) | 50g sachets, 2.5kg jars | Low | |
0.903 (+/- 0.007) | 1.196 (+/- 0.014) | 1.004 (+/- 0.008) | 30g & 50g sachets, 2.5kg jars | High | |
0.430 (+/- 0.005) | 0.596 (+/- 0.006) | 0.519 (+/- 0.004) | 2.5kg jars | Low | |
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) |
Oxide | <0.002 | <0.2 | 50g sachets only | High | |
| SL107 | Sulphide (3.2% S) | 5.069 (+/- 0.03) | 30.1 (+/- 0.4) | 30g & 50g sachets, 2.5kg jars | High |
Sulphide (3.3% S) | 9.182 (+/- 0.057) | 46.7 (+/- 0.6) | 50g sachets, 2.5kg jars | Low | |
| SN118 | Sulphide (3.3% S) | 8.917 (+/- 0.055) | 49.9 (+/- 0.9) | 30g & 50g sachets, 2.5kg jars | High |
SP89* | Sulphide (3.5% S) | 18.46 (+/- 0.08) | 84.4 (+/- 1.1) | 30g & 50g sachets, 2.5kg jars | Low |
| Sulphide (3.5% S) | 18.2 (+/- 0.1) | 84 (+/- 1.5) | 30g & 50g sachets, 2.5kg jars | High | |
OxQ132* | Oxide | 34.69 (+/- 0.22) | 128.5 (+/- 1.9) | 50g sachets only | Low |
Oxide | 34.78 (+/- 0.23) | 128.0 (+/- 1.1) | 30g & 50g sachets, 2.5kg jars | High | |
Sulphide (10% S) | 39.47 (+/- 0.31) | 158.6 (+/- 2.8) | 30g & 50g sachets, 2.5kg jars | High | |
*certificates available on request
Reference Materials Certified for Au
Material | Matrix Type | Gold (ppm) assigned values | Packaging | Stock Level |
Oxide | <0.002 | 50g sachets only | High | |
| OxA187 | Oxide | 0.080 (+/- 0.001) | 30g & 50g sachets, 2.5kg jars | High |
| OxB186 | Oxide | 0.121 (+/- 0.001) | 30g & 50g sachets, 2.5kg jars | High |
Oxide | 0.216 (+/- 0.002) | 50g sachets only | Low | |
Oxide | 0.213 (+/- 0.002) | 50g sachets, 2.5kg jars | Medium | |
| OxC185 | Oxide | 0.218 (+/- 0.002) | 30g & 50g sachets, 2.5kg jars | High |
| SC127 | Sulphide (2.0% S) | 0.225 (+/- 0.002) | 30g & 50g sachets, 2.5kg jars | Low |
| SC129 | Sulphide (2.0% S) | 0.231 (+/- 0.002) | 30g & 50g sachets, 2.5kg jars | High |
Oxide | 0.399 (+/- 0.004) | 50g sachets only | Low | |
Oxide | 0.456 (+/- 0.004) | 30g & 50g sachets, 2.5kg jars | Please enquire | |
| OxD183 | Oxide | 0.453 (+/- 0.003) | 30g & 50g sachets, 2.5kg jars | High |
| OxD184 | Oxide | 0.414 (+/- 0.003) | 30g & 50g sachets, 2.5kg jars | High |
| SE125 | Sulphide (2.3% S) | 0.618 (+/- 0.004) | 30g & 50g sachets, 2.5kg jars | High |
| OxE182 | Oxide | 0.663 (+/- 0.004) | 30g & 50g sachets, 2.5kg jars | High |
Oxide | 0.832 (+/- 0.008) | 30g sachets only | Low | |
Oxide | 0.857 (+/- 0.005) | 50g sachets | Low | |
| Oxide | 0.814 (+/- 0.006) | 30g & 50g sachets, 2.5kg jars | High | |
SF141* | Sulphide (2.5% S) | 0.883 (+/- 0.008) | 30g & 50g sachets, 2.5kg jars | High |
Oxide | 0.930 (+/- 0.005) | 2.5kg jars only | Please enquire | |
| Oxide | 1.063 (+/- 0.009) | 2.5kg jars only | Medium | |
| OxG191 | Oxide | 1.093 (+/- 0.007) | 30g & 50g sachets, 2.5kg jars | High |
| OxG180 | Oxide | 0.971 (+/- 0.009) | 50g sachets only | High |
| OxG189 | Oxide | 0.987 (+/- 0.008) | 30g & 50g sachets, 2.5kg jars | High |
Sulphide (2.6% S) | 0.997 (+/- 0.008) | 2.5kg jars only | Low | |
Sulphide (2.6% S) | 1.024 (+/- 0.006) | 2.5kg jars only | Low | |
| SG115 | Sulphide (2.6% S) | 1.017 (+/- 0.005) | 30g & 50g sachets, 2.5kg jars | Medium |
Oxide | 1.291 (+/- 0.008) | 50g sachets, 2.5kg jars | Low | |
OxH188* | Oxide | 1.318 (+/- 0.012) | 30g & 50g sachets, 2.5kg jars | Medium |
SH82* | Sulphide (2.8% S) | 1.333 (+/- 0.007) | 50g sachets only | Low |
SH98* | Sulphide (2.7% S) | 1.400 (+/- 0.008) | 30g & 50g sachets, 2.5kg jars | High |
Oxide | 1.790 (+/- 0.011) | 50g sachets, 2.5kg jars | Low | |
| Oxi177 | Oxide | 1.811 (+/- 0.013) | 30g & 50g sachets, 2.5kg jars | High |
Sulphide (3.0% S) | 1.790 (+/- 0.008) | 30g & 50g sachets, 2.5kg jars | Low | |
| Si96* | Sulphide (3.0% S) | 1.801 (+/- 0.009) | 30g & 50g sachets, 2.5kg jars | High |
| Oxide | 2.385 (+/- 0.016) | 30g & 50g sachets, 2.5kg jars | High | |
Sulphide (3.0% S) | 2.812 (+/- 0.021) | 2.5kg jars only | Low | |
| Sulphide (3.0% S) | 2.715 (+/- 0.021) | 30g & 50g sachets, 2.5kg jars | High | |
| Hi Sil K6 | Sulphide (1.0% S) | 3.446 (+/- 0.033) | 30g & 50g sachets, 2.5kg jars | High |
| SK137 | Sulphide (3.0% S) | 4.089 (+/- 0.033) | 30g & 50g sachets, 2.5kg jars | High |
| OxK175 | Oxide | 3.843 (+/- 0.023) | 30g & 50g sachets, 2.5kg jars | Low |
| OxK197 | Oxide | 3.753 (+/- 0.029) | 30g & 50g sachets, 2.5kg jars | High |
| SL136 | Sulphide (3.2% S) | 5.899 (+/- 0.039) | 30g & 50g sachets, 2.5kg jars | High |
Oxide | 5.849 (+/- 0.042) | 50g sachets only | Low | |
| OxL196 | Oxide | 5.818 (+/- 0.056) | 30g & 50g sachets, 2.5kg jars | High |
Sulphide (3.3% S) | 8.520 (+/- 0.047) | 50g sachets only | Low | |
Sulphide (3.3% S) | 8.476 (+/- 0.049) | 30g & 50g sachets, 2.5kg jars | Please enquire | |
| SN135 | Sulphide (3.3% S) | 8.510 (+/- 0.072) | 30g & 50g sachets, 2.5kg jars | High |
| SN117 | Sulphide (3.3% S) | 8.443 (+/- 0.036) | 30g & 50g sachets, 2.5kg jars | Medium |
| OxN173 | Oxide | 7.668 (+/- 0.046) | 30g & 50g sachets, 2.5kg jars | Low |
HiSilP3* | Sulphide (2.0% S) | 12.24 (+/- 0.071) | 2.5kg jars | Please enquire |
| HiSilP5 | Sulphide (2.0% S) | 12.05 (+/- 0.064) | 30g & 50g sachets, 2.5kg jars | High |
| OxP133* | Oxide | 15.14 (+/- 0.08) | 50g sachets only | Low |
Oxide | 15.150 (+/- 0.106) | 2.5kg jars only | Please enquire | |
| OxP194 | Oxide | 15.10 (+/- 0.8) | 30g & 50g sachets, 2.5kg jars | High |
| Sulphide (3.5% S) | 18.091 (+/- 0.103) | 50g sachets, 2.5kg jars | Please enquire | |
| SP122 | Sulphide (3.5% S) | 18.044 (+/- 0.122) | 50g sachets only | Low |
| SP133* | Sulphide (3.5% S) | 18.14 (+/- 0.11) | 30g & 50g sachets, 2.5kg jars | High |
| OxQ115 | Oxide | 25.22 (+/- 0.18) | 50g sachets only | Low |
| OxQ170 | Oxide | 24.939 (+/- 0.182) | 30g & 50g sachets, 2.5kg jars | High |
SQ87* | Sulphide (3.5% S) | 30.87 (+/- 0.21) | 50g sachets only | Low |
| SQ131 | Sulphide (3.5% S) | 30.68 (+/- 0.23) | 30g & 50g sachets, 2.5kg jars | High |
*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.
- Reference Materials Plotting Chartv2 2 3 Download
- Safety Data Sheet - Hi Sil v2 2023 (EN) Download
- Safety Data Sheet - Au Blank v2 2023 (EN) Download
- Safety Data Sheet - Oxide v2 2023 (EN) Download
- Safety Data Sheet - Sulphide v2 2023 (EN) Download
- Safety Data Sheet - Hi Sil v2 2023 (FR) Download
- Safety Data Sheet - Au Blank v2 2023 (FR) Download
- Safety Data Sheet - Oxide v2 2023 (FR) Download
- Safety Data Sheet - Sulphide v2 2023 (FR) Download
Certified Reference Material Enquiry
