A pH meter consists of three parts: a pH measuring electrode, a reference electrode, and a high input impedance meter. The reference electrode has a known, constant and stable potential.
The pH electrode can be considered as if it were a battery, with a voltage that varies according to the pH of the measured solution. The electrode that measures pH is a glass bulb sensitive to hydrogen ions, with an output in millivolts that varies according to changes in the relative concentration of hydrogen ions inside and outside the bulb. The output of the reference electrode does not change with the activity of the hydrogen ions.
The pH electrode has a very high internal resistance, which makes it difficult to measure the voltage variation with pH. Therefore, the impedance of the pH meter input and leakage resistances are important factors.
A pH meter or pH meter is an instrument used to measure the acidity or alkalinity of a solution. The information provided by this equipment expresses the degree of acidity of an acid or a base in terms of the activity of the hydrogen ions.
The pH is the unit of measurement that describes the degree of acidity or alkalinity and is measured on a scale ranging from 0 to 14. An approximate indication of pH can be obtained using pH indicators or tapes, which change color depending on the variation of the pH level, but these indicators present limitations in terms of accuracy and can be difficult to interpret correctly in dark or colored samples, and this error can be corrected extensively through the use of a pH meter.
The pHmeters measure the voltage levels between two electrodes, and show the converted result in a pH value that corresponds to the liquid being analyzed. The operation of a pHmeter is performed through an electrochemical cell mechanism, where the H+ in the chemical reaction allow to determine the concentration of them in solution. When measuring pH with a pH meter, a reference and a measuring electrode are used, which is sensitive to analytes.
A pH meter acts as a high impedance amplifier that accurately determines electrode voltages however minimal they are and displays the results directly in pH units on an analog or digital display. In some cases, the stresses can also be interpreted for special applications or use with selective ion electrodes or oxidation/reduction potential.
Precision benchtop pH/ion meter, 1 to 5 points calibration, selectable concentration units. The meter is suitable for measuring the pH, ORP and ion concentration...
High-accuracy pocket pH meter, 1 to 3 points calibration, setup menu contains 5 options. The tester is...
Classical benchtop pH meter, 1 to 3 points calibration, Automatic Temperature Compensation, setup menu contains 5 options, accuracy: 0.01pH...
Professional pH and ion meter, 2 to 5 points calibration, setup menu contains 20 options. The meter is ...
Digital pocket pH meter, Manual Temperature Compensation. The tester comes with a plastic body pH electrode for outdoor applications, accuracy: 0.01pH.
Features
• BNC connector is capable of connecting the different types of pH electrodes.
• 1 to 3 points calibration with auto-buffer recognition.
• Manual temperature compensation allows adjusting the temperature value.
• Auto-Read function senses and locks the measurement endpoint.
• Auto-Power Off effectively conserves battery life.
• Setup menu allows setting the pH buffer group, number of calibration points, temperature
unit, etc.
• Reset function automatically resumes all settings back to the factory defaults.
| Model | YR01804 |
| Range | -1.00 to 15.00pH |
| Resolution | 0.01pH |
| Accuracy | ±0.01pH |
| Calibration Points | 1 to 3 points |
| pH Buffer Options | USA (pH4.01/7.00/10.01), NIST (pH4.01/6.86/9.18) |
| Temperature Compensation | 0 to 100°C/32 to 212°F, manual |
| Hold Function | Manual or auto-endpoint |
| Auto-Power Off | 8 minutes after last key pressed |
| Connector | BNC |
| Display | Dual-line LCD (21×21mm) |
| Power | 2×1.5V AAA batteries |
| Battery Life | Approximately 200 hours of continuous use |
| Dimensions | 175(L)×40(Dia.)mm |
| Weight | 100g |
pH is the unit of measurement that describes the degree of acidity or alkalinity and is measured on a scale ...
A pH meter or pH meter is an instrument used to measure the acidity or alkalinity of a solution. The information provided by this equipment expresses the degree ...
A pH meter is one of the most used equipment in a laboratory. It is used to measure the acidity or alkalinity...
A pH meter is an instrument used to measure the acidity or alkalinity of a solution. The information provided...
A pH meter is an instrument used to measure the acidity or alkalinity of a solution. The information provided by this...
It is important to follow the instructions and recommendations of manufacturers for the use and calibration of a phmeter...
PH is a parameter used to measure the concentration of the hydrogen ion [H +] in a solution. In definition pH, it is the negative...
The pH meter is used to determine the degree of decline of a sample. This is important because it indicates the amount of acid or base in the sample and determines the degree of contamination. Likewise, it measures the concentration of H+ ions in a sample....
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