TN-401 QA/QC Procedures for Chrysos PhotonAssay™ Systems
The QA/QC processes that underpin every PhotonAssay™ result.
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What this note covers
The three components of PhotonAssay™ QA/QC: automated instrument checks, reference sample validation, and Chrysos QC team review
How PhotonAssay™ QA/QC differs from fire assay — including why fire assay control limits and certified mean grades are not appropriate for PhotonAssay™ monitoring
Selection, quantity and ongoing care of monitoring standards and blanks for routine PhotonAssay™ operation
Automated QA/QC checks that trigger data holds, including 2 SD and 3 SD thresholds for monitoring standard grades
Daily, weekly and monthly QA/QC reporting structure, including automated control charts and grade ratio plots
