What is a calibration blank?

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Multiple Choice

What is a calibration blank?

Explanation:
A calibration blank is the zero point used to set the instrument’s baseline before measuring standards. It contains all reagents except the analyte and captures the background signal the system would show when nothing is measured. By recording this zero signal, you can subtract or account for background so the calibration curve truly reflects only the analyte’s signal. It’s not a plot of known concentrations versus signal (that builds the calibration curve), and it’s not simply a standard with a known concentration (that’s a calibration standard). It’s specifically the baseline measurement that defines where zero sits on the instrument’s response before running standards.

A calibration blank is the zero point used to set the instrument’s baseline before measuring standards. It contains all reagents except the analyte and captures the background signal the system would show when nothing is measured. By recording this zero signal, you can subtract or account for background so the calibration curve truly reflects only the analyte’s signal. It’s not a plot of known concentrations versus signal (that builds the calibration curve), and it’s not simply a standard with a known concentration (that’s a calibration standard). It’s specifically the baseline measurement that defines where zero sits on the instrument’s response before running standards.

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