IMS-333

IMS-333 is a high-precision certified reference material (CRM) designed for quality control in the analysis of gold (Au) and copper (Cu) in gold-copper sulphide ores. Certified in accordance with ISO Guide 35:2017 and ISO 17034:2016, this CRM is manufactured from homogenized pulverized basalt spiked with Au and blended with a copper sulphide concentrate. It ensures reliable performance for fire assay (Au) and multi-acid digest (Cu, Ag, and other elements) analytical methods.

Key Features

• Certified Concentrations:
  • Au (Fire Assay): 2.99 g/t
  • Cu (Mixed Acid Digest): 1018 ppm
  • Additional Certified Elements (see full certificate).
• Method-Specific Validation:
  • Validated across 13 ISO/IEC 17025-accredited laboratories for fire assay (AAS/ICP finish) and four-acid digest (ICP-OES).
• Supplied in 1kg press-sealed plastic jars, with 50-100g sachets available upon request for blind laboratory submissions.
• Validity: 5 years when stored sealed in cool, dry conditions.

Key Certified Values

Intended Use

• Quality Control:
  • Calibration and validation of fire assay (25–50g aliquots) for Au.
  • Validation of four-acid digest (0.2g aliquots) for Cu and multi-element analysis.
• Bias Detection: Identifies laboratory or procedural errors in Au and Cu analysis.
• Matrix Representation: Mimics gold-copper sulphide ores for realistic QC.