$450.00
SE
Bante221-ORP Portable pH/ORP Meter E201 Plastic PH electrode + 501 Plastic ORP electrode
-2.000~20.000pH
High-precision portable ORP meter, optional relative and absolute mV measurement mode, the instrument is suitable for outdoor measurement of pH and Oxidation-reducton potential of samples, measurement accuracy: 0.2mV.

$259.00
SE
NOBOTECH PH-1186 Industrial Online ORP Meter-1999~ + 1999mV
Measurement PH value/Oxidation-reduction potential (ORP) and temperature value, waterproof, dustproof and moisture-proof shell, imported core components, large-screen dot matrix LCD display, automatic temperature compensation, automatic identification of standard liquid.

If you don't know how to choose "STIP-scan", please consult customer service.