Thermo Scientific Orion Versa Star VSTAR-PH, Справочное руководство

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Thermo Scientific Orion V
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pH with LogR Temperature Module
ORP Calibration
The mV reading of an ORP standard is dependent on the ORP electrode reference system, reference material, filling
solution and ORP standard temperature. An ORP electrode can be automatically calibrated to read 420 mV relative
to the Standard Hydrogen Electrode (E
H
) at 25 °C when the Orion ORP standard (cat. no. 967901 or 96791),
Orion ORP electrode (cat. no. 9678BNWP, 9778BNWP, 9180BNMD or 9179BNMD) and Orion 4M KCl filling solution
(cat. no. 900011) or 4M KCl gel (in electrode with cat. no. 9179BNMD) are used. The raw mV reading of an electrode
with the same conditions is 220 mV at 25 °C.
One standard can be used for ORP calibration. Always use fresh standard. Prepare the electrode according to the
instructions in the electrode user guide.
1. Press f1 (Cal) to enter calibration mode.
2. Follow the screen prompts for calibration.
3. The calibration can be saved or printed when complete.
4. Information for the last calibration can be displayed on the main measurement screen. Refer to this
reference guide, Chapter 2 Module Overview, Display Information section for more information.