Geochemistry Guide 2025

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Sample preparation

Sample preparation procedures

SPLITTING CODE

ANALYTE CODE

DESCRIPTION

G_SPL G_SPL G_SPL DRYING CODE G_DRY G_DRY

SPL_RF

Manual Riffle Splitting

SPL_X

Split additional representative samples

SPL_RO

Rotary Split <3 kg

ANALYTE CODE

DESCRIPTION

DRY105 DRY60

Sample Drying, 105ºC, <3 kg Sample Drying, 60ºC, <3 kg

G_DRY_KG

DRY_XT_WT

Sample Drying, Excessively Wet Samples

If you require additional or other options, please contact your SGS customer service agent.

CRUSHING CODE

ANALYTE CODE

DESCRIPTION

G_CRU G_CRU

CRU6

Coarse crush 6 mm

CRU75

Crush <3 kg, 75% passing 2 mm

G_CRU_KG

CRU75_WT

Crush >3kg, per kg, 75% passing 2 mm

G_CRU

CRU90

Crush <3 kg, 90% passing 2 mm

G_CRU_KG

CRU90_WT

Crush >3 kg, per kg, 90% passing 2 mm

G_PUL G_PUL

CRM

Continous Ring Mill Pulverize <3 kg, 90% passing 1 mm Continous Ring Mill Pulverize >3 kg, per kg, 90% passing 1 mm

CRM_KG

If you require additional or other options, please contact your SGS customer service agent.

SCREENING CODE G_SCR_D G_SCR_D

ANALYTE CODE

DESCRIPTION

SOIL_WT G_SCR_KG

Dry Screening to -80mesh (180µm), per kg Dry Screening, various micron particle sizes, per kg

G_FAS G_FAS

SCR75 SCR106

Metallic/Screening Procedure 75 µm

Metallic/Screening Procedure 106 µm If you require additional or other options, please contact your SGS customer service agent.

Sample preparation or sample reduction involves crushing, splitting, and pulverizing a sample to produce a representative sub-sample. Good practice is essential for reliable analytical data. SGS is committed to providing dedicated sample preparation procedures at each of our locations. This involves technologically advanced equipment and often, physically separated sample processing areas to accommodate sample type and concentration. To reduce contamination risks, SGS experts select appropriate equipment, monitor performance and wear as well as routinely insert known barren reference materials. The choice of crushing and pulverizing methods depends on the sample type and mineral of interest. Please contact your SGS customer service agent for the best options.

PULVERIZING CODE

ANALYTE CODE

DESCRIPTION

G_PUL G_PUL G_PUL G_PUL G_PUL G_PUL G_PUL G_PUL G_PUL G_PUL G_PUL G_PUL G_PUL G_PUL

PUL85_CR

Pulv, Cr Steel, 85% 75µm 250g Pulv, Cr Steel, 85% 75µm 1000g Pulv, Cr Steel, 85% 75µm 3000g Pulv, Cr Steel, 90% 75µm 250g Pulv, Cr Steel, 90% 75µm 1000g Pulv, Cr Steel, 90% 75µm 3000g

PUL85_CR1000 PUL85_CR3000 PUL90_CR250 PUL90_CR1000 PUL90_CR3000

PUL85_ZR PUL85_W PUL85_A

Pulv, Zirconia bowl, 50-80g

Pulv, Tungsten Carbide Bowl <100g Pulv, Agate/Ceramic Mort & Pest <100g Pulv, Agate/Ceramic Ringmill <100g Disc Grind, 106µm 500g-1.5kg

Bowl selection

PUL85_A_RING

BOWL TYPE

SAMPLE CAPACITY

MAIN

MINOR

GRD106_A GRD106_B

CONTAMINANT

CONTAMINANT

Disc Grind, 106µm 1.5kg-3.5kg

Standard mild steel bowl Cr-free steel

To 3 kg

Fe, Cr

Mo

PUL_R PUL_H

Ringmill Preparation, Carbon Sample(s) Hand Preparation, Carbon Sample(s)

500 g to 1.5 kg

Fe

Mn

G_PUL Pulverization of Concentrates If you require additional weight options, please contact your SGS customer service agent for more information. Samples can also be pulverized at customer specified grain sizes (i.e. 106 or 120 microns) and % passing requirements. PUL_CON

Zirconia

100 g 150 g 100 g

Zr, Hf W, Co

Al Ta

Tungsten carbide

Agate Si Not all pulverizing bowl types are available at all locations, please contact your SGS customer service agent.” which will be the same as on the rest of the page

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