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Calibration routines are performed using ___, which is a specimen with a known value.

1) a calibration curve
2) a control sample
3) a standard solution
4) a reference material

User Sktan
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Final answer:

Calibration routines in chemistry are performed using a standard solution, which is a precisely known concentration of a solution made for calibration purposes.

Step-by-step explanation:

Calibration routines are performed using a standard solution, which is a specimen with a known value. Among the options provided, a standard solution, or stock solution, is a carefully prepared solution with precisely known concentrations used for calibration in chemistry experiments. It is made by dissolving a precise mass of a solute into a precise volume of solvent using lab equipment like a volumetric flask that is calibrated to a single volume. The process ensures a high degree of precision in subsequent measurements and experiments.

User Dlaliberte
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