Operating instructions DuMaster D-480
©BÜCHI Labortechnik AG
4 - Understanding the instrument and planning its use
53
Linear calculation over two ranges
The following picture shows an example in which a linear calculation over two ranges achieves
acceptable calibration curve quality.
Linear and polynomial calculation
The following picture shows an example in which the calibration curve exhibits acceptable quality by
means of a linear calculation in the low concentration range and a polynomial calculation in the higher
concentration range.
Polynomial calculation over the whole range
The following picture shows an example in which a polynomial calculation over the whole range
achieves acceptable calibration curve quality.
Achievable calibration curve quality
Process standard deviation "Proc-SD" and quality factor "r" serve as a measure of achievable
calibration curve quality.
Summary of Contents for DuMaster D-480
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