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Overview
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Value of calcium reference standard solution is based on its reaction with cresolphtalein complexone; mutual interference should be minimized by using 8-hydroxyquinoline for determination of Ca. Standard Working concentration ranges of 0.5-5 ppm for Ca.
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Background
All analysis and tests during certification works are carried out at ISO 17025 accredited laboratories. Manufacture of the standards is implemented according to ISO 17034 conditions. Manufacture of standards meets conditions to ensure NIST traceability.
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Overview