Miscellaneous procedures CODE
ANALYTE CODE
DESCRIPTION
G_WSH G_WSH G_PRP G_RAD G_PRP G_PRP G_QRT
G_WSH_CRU G_WSH_PUL
Barren wash after crushing stage Barren wash after pulverizing stage
PRP_COM
Compositing samples
Radiation monitoring using scintillation counter
PRP_EN PRP_EN2
Radioactive preparation environment Asbestos preparation environment Sample quarantine and handling
Moisture and loss on ignition (LOI) Many materials contain volatile components and/or moisture. SGS has a variety of tests, including moisture (H2O), loss on ignition (LOI) (at various temperatures) and thermo- gravimetric analysis (TGA), that provide reliable and quantitative analyses of these parameters. Specific gravity and bulk density Specific gravity (SG) is the density of a material relative to water or air and is expressed as a dimensionless number. It is normally measured by the gas pycnometer method on pulp samples and amounts to the average SG of the mineral particles making up the rock or ore. Bulk density is the average SG of the minerals comprising a rock plus the void space (from vugs, pores, etc.) and is measured by the water immersion method on fist sized rock samples or core. Samples are waxed if there is significant porosity. If the rock samples are competent waxing may not be necessary. Bulk density (BD) along with grade and volume is an extremely important parameter in calculating tonnages for Mineral Resource estimates or ore reserves, which are critical for economic evaluation of mineral deposits. Inadequate BD measurements are often at the root of errors in ore estimates with financial consequences for projects. Use high quality specific gravity, bulk density and grain size physical property data from SGS for robust Resource Estimate calculations and in developing mineral processing flow sheets.
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SGS MyLab – geochemistry customer portal
Designed for the way you work SGS MyLab is fully mobile-ready and works on any browser — no app required. Whether you are on site or in the office, you can securely access your data and stay connected to your projects. Availability and roadmap SGS MyLab is currently available to geochemistry clients in Australia, with a phased rollout to additional countries planned for 2026. New features are already in development to further enhance functionality and user experience — stay tuned. Get started To request access, register through the portal or contact your local SGS Client Service team. Once activated, you will receive a welcome email to set your password and start using SGS MyLab.
SGS MyLab is our new secure online geochemistry customer portal, designed to give you real-time visibility and control over your samples, projects and analytical results — anytime, anywhere. Developed in close collaboration with customers, SGS MyLab reflects real operational workflows and practical needs. It will replace the existing QLab system and represents the next generation of digital access to SGS geochemistry services. What you can do with SGS MyLab Through a single, intuitive interface, you can: • Track job status in real time • Access results instantly and download certificates of analysis (CoAs) • Manage multiple projects centrally
ANALYTE CODE
DESCRIPTION
G_PHY06V G_PHY08V G_PHY17V G_PHY18V
Specific gravity - pycnometer Specific gravity - volumetric
Bulk density - waxed
Bulk density - immersion, non-waxed
Particle size analysis SGS offers particle size analysis by wet screening, dry screening, a combination of both, or laser diffraction. Particle size analysis is used to determine the size classification of tills, sediments or ores or to produce sized fractions for additional analysis. Wet screening is preferable to dry screening for materials containing a high percentage of clays. Dry screen tests are best for free flowing samples with the particles separated (i.e. unagglomerated). Often wet and dry methods are combined. Wet screening is performed to remove excessive fines then dry screening is performed to remove the oversize. Laser diffraction is recommended for very fine grained samples, as it is capable of measuring particle sizes at very low limits (0.02 microns). It is suitable for use with both wet and dry samples.
• Share visibility across teams • Control user access securely
• Access built-in help guides when needed By reducing manual follow-ups and email exchanges, SGS MyLab helps you make faster, more informed decisions throughout your geochemistry projects.
ANALYTE CODE
DESCRIPTION
Discover a smarter way to manage your geochemistry data with SGS MyLab.
G_PHY15V G_PHY18V
Particle size, sieve analysis (dry or wet)
Particle size, laser diffraction
16
17
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