TN-403 Chrysos PhotonAssay™ Monitoring Standard Recommendations
How PhotonAssay™ is monitored to maintain accuracy and reliability.
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What this note covers
Recommended monitoring standard suites for the standard gold service (PAAU02), high-range gold services (PAAU02H, PAAU02HH), concurrent gold and silver services (PAAGAU01, PAAUAG02), and copper services (PACU01, PACU01H)
Grade ranges and commercial CRM examples for gold (blank, low, medium, high and very high), silver and copper monitoring standards, including materials with PhotonAssay™-certified grades
Monitoring standard quantity guidance: 5–6 jars per material, sourced from the same 2.5 kg batch, inserted at 1 per 20 customer samples
How Chrysos establishes grade and standard deviation values for new monitoring standards through repeated measurements prior to registration
