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pH/ORP/Temperature Combo Tester – HI98121
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Description:
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
Specification pH/ORP/Temperature Combo Tester – HI98121
| pH Range | -2.00 to 16.00 pH |
|---|---|
| pH Resolution | 0.01 pH |
| pH Accuracy | ±0.05 pH |
| pH Calibration | automatic, 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 Compensation | automatic for pH readings |
| ORP Range | ±1000 mV |
| ORP Resolution | 1 mV |
| ORP Accuracy | ±2 mV |
| Temperature Range | -5.0 to 60.0°C / 23.0 to 140.0°F |
| Temperature Resolution | 0.1°C / 0.1°F |
| Temperature Accuracy | ±0.5°C /±1°F |
| pH Electrode | HI73127 replaceable pH electrode (included) |
| ORP Electrode | fixed ORP sensor |
| Automatic Shut-Off | after 8 minutes non-use |
| Battery Type/Life | 1.5V (4) / approximately 250 hours of continuous use |
| Environment | -5 to 50°C (23 to 122°F); RH max 100% |
| Dimensions | 163 x 40 x 26 mm (6.4 x 1.6 x 1.0’’) |
| Weight | 100 g (3.5 oz.) |
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