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Monday, May 18, 2015

ISO Paper Calibration Hierarchy

Calibration is extremely important to certify your results, validate production, guarantee customer requirement and compare from one site to another. Calibration for optical properties in the Paper Industry includes calibration of spectral reflectance (minimally 400-700 nm), fluorescent (UV Level D65 & C) and non-fluorescent levels.  ISO employs a three level system of distribution of calibration standards as described in ISO 2469.  The three levels are:

IR1: The perfect reflecting diffuse (absolute reflectance)

IR2: Standardizing laboratories; National Research Council of Canada (NRC), NIST (USA) and PTB (Germany)

IR3: Authorized laboratories according to ISO 4094:

         USA        Technidyne Laboratory Services

         Canada    FPInnovations
         France     Centre Technique due Papier
         Sweden   Innventia


ISO STANDARDS HIERARCHY
Laboratory
Activity
Standard Issue

ISO Standardizing

Establishes IR1 (perfect reflecting diffuse)
Evaluates IR2 against IR1


IR2 (level 2 standard)
ISO Authorized
Evaluates IR3 against IR2

IR3 (level 3 standard)
Testing
Calibrates test instrumentation with IR3




All of the ISO Authorized Laboratories exchange IR3's on a monthly basis to see how they agree and as a diagnostic tool to detect errors.  The labs also meet at least every 18 months to discuss procedures, discrepancies, concerns and coordinate projects.

To learn more about Technidyne's calibration process and materials, contact Nick Riggs and see our website Technidyne Laboratory Services

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