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Bowl Selection
BOWL TYPE
SAMPLE CAPACITY
MAIN
MINOR
CONTAMINANT
CONTAMINANT
Standard mild steel bowl Cr-free steel
To 3 kg
Fe, Cr
Mo
500 g to 1.5 kg
Fe
Mn
Zirconia
100 g 150 g 100 g
Zr, Hf W, Co
Al Ta Si
Tungsten carbide
Agate
Note: Not all pulverizing bowl types are available at all locations. Please enquire.
Sample Preparation Procedures
SPLITTING CODE
ANALYTE CODE
DESCRIPTION
G_SPL G_SPL G_SPL G_SPL G_SPL DRYING CODE G_DRY G_DRY G_DRY G_DRY
SPL_RF SPL_CQ
Manual Riffle Splitting
Cone and Quarter Splitting
SPL_X
Split additional representative samples
SPL_RO
Rotary Split <3 kg
SPL_RO_M
Rotary Split, Micro Split <100 g
Sample Preparation
ANALYTE CODE
DESCRIPTION
DRY105
Sample Drying, 105ºC, <3 kg
MICRO_105
Microwave Sample Drying, 105ºC, <3 kg
Sample preparation (also referred to as sample reduction) is the process by which a sample is crushed, split and pulverized for analysis. This will almost always involve sub-sampling. The right sampling method will produce a sub- sample that is representative of the total sample. Good sample reduction practice is essential to obtaining meaningful and reliable analytical data. SGS is committed to providing dedicated sample preparation procedures at each of our locations. This involves technologically advanced equipment and, in most cases, physically separated sample processing areas for each sample type. The crushing and pulverizing options available are varied. Your choice can depend on the sample type and the mineral that hosts the element of interest within the sample matrix. Please consult with our technical personnel for the best possible option for your samples before starting an analytical program.
During sample reduction, there are many critical points where sample contamination can occur. One such area arises from the type of equipment used. Unfortunately, during sample reduction, contamination can never be avoided but processes are utilized to keep the level of contamination to a minimum. Contamination levels are dependent on sample hardness, the media/material of the crushing and pulverizing equipment and the wear state of this equipment. Contamination levels can be minimized by using the correct pulverizing bowl type for the project. Contamination in the sample preparation process is monitored by the insertion of known barren reference materials in the process.
DRY60
Sample Drying, 60ºC, <3 kg
DRY_AIR
Sample Drying, Room Temp, <3 kg Sample Drying, Excessively Wet Samples
G_DRY_KG G_DRY_KG
DRY_XT_WT
DRY_C Oven Drying, 105ºC, Carbon Samples Note: If you require additional weight options, please contact your SGS customer service agent for more information.
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