pH/ORP/Temperature Combo Tester – HI98121

SKU: 69692563

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pH/ORP/Temperature Combo Tester – HI98121

Name :pH/ ORP/ Temperature Combo Tester

Band: Hanna Instruments

origin : USA

Made by : Romania

Model : HI98121


key of Feature

  • Waterproof

  • Automatic Temperature Compensation

  • HOLD feature

  • Simple to use

  • Economical

What is ph ?

pH is the measurement of the voltage generated by an electrochemical cell at zero current. The potential generated is proportional to the thermodynamic activity of the ion being measured.

What is ORP?

ORP (Oxidation Reduction Potential) measurements quantify the overall state of a solution as having the ability to oxidize or reduce a chemical species. Oxidizing and reducing reagents are used to participate in chemical reactions known as a redox reaction.

An ORP sensor must be chemically inert; it cannot be oxidized or reduced itself. It must also have the proper surface characteristics to promote rapid electron exchange, a property known as high exchange current density. Two noble metals have proven to work well for this purpose: pure platinum and pure gold are both used in the

pH Range-2.00 to 16.00 pH
pH Resolution0.01 pH
pH Accuracy±0.05 pH
pH Calibrationautomatic, at one or two points with two sets of standard buffers (pH 4.01 / 7.01 / 10.01 or pH 4.01 / 6.86 / 9.18)
pH Temperature Compensationautomatic for pH readings
ORP Range±1000 mV
ORP Resolution1 mV
ORP Accuracy±2 mV
Temperature Range-5.0 to 60.0°C / 23.0 to 140.0°F
Temperature Resolution0.1°C / 0.1°F
Temperature Accuracy±0.5°C /±1°F
pH ElectrodeHI73127 replaceable pH electrode (included)
ORP Electrodefixed ORP sensor
Automatic Shut-Offafter 8 minutes non-use
Battery Type/Life1.5V (4) / approximately 250 hours of continuous use
Environment-5 to 50°C (23 to 122°F); RH max 100%
Dimensions163 x 40 x 26 mm (6.4 x 1.6 x 1.0’’)
Weight100 g (3.5 oz.)




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