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5. DESCRIPTION
5.1. GENERAL DESCRIPTION & INTENDED USE
HI83325
multiparameter photometer is a compact and versatile meter with two measurement modes,
Photometer and Probe. Photometer mode includes a CAL Check™ feature and 13 different methods
that cover a wide variety of applications, making it ideal for both benchtop and portable operations.
With the CAL Check™ feature users are able to validate the performance of the instrument and
apply a user calibration (if necessary). Hanna Instruments CAL Check™ cuvettes are made with NIST
traceable standards. Probe mode uses a digital pH probe with a one or two-point calibration.
• Digital electrode input for pH measurements
• Certified CAL Check cuvettes to confirm meter functionality
• Dual purpose micro-USB flash drive
• Lithium polymer rechargeable battery
• Auto-off
• Absorbance mode
• User and sample name entry
• GLP features
5.2. PRECISION & ACCURACY
Precision is how closely repeated measurements are to one another. Precision is usually expressed as
standard deviation. Accuracy is defined as the closeness of a test result to the true value. Although
good precision suggests good accuracy, precise results can be inaccurate. The figure explains these
definitions. For each method, the accuracy is expressed in the related measurement section.
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