PH meter use 1. Open the back cover, insert the battery one. 2. Replace the composite glass electrode: 3. Turn on the power switch, the call to the PH measurement files. 4. Measure the temperature with a thermometer PH6.86 standard solution, and then the PH meter knob to lower the temperature compensation of the measured temperature value. 5. The composite electrode with deionized water rinse, and dry with filter paper. 6. PH6.86 standard solution was poured into 2 ~ 5ml water wash and dry plastic beaker, wash the beaker and drained after the composite electrode, then add 20mlPH6.86 standard solution in a plastic beaker PH meter PH meter is What, in the composite electrode into the solution, with the instrument positioning knob to adjust the reading of 6.86, until stable. 7. The composite electrode with deionized water wash where PH meter PH meter, dried with filter paper to dry, use a thermometer to measure the temperature of the solution PH4.00 and instrument temperature compensation knob to the measured temperature values. 8. PH4.00 standard solution 2 ~ 5ml into another plastic beaker, after washing the beaker and the composite electrode drained, then add 20mlPH4.00 standard solution, the composite electrode into the solution, the reading is stable, with the slope of the knob adjusted PH4.00. After adjustment knob should be noted that the slope, and never move again. 9. Determination of the test solution temperature with a thermometer, and the instrument is adjusted to the temperature measured temperature compensation. 10. The composite electrode inserted into the test solution, read the PH, PH value is the test solution. 11. Note: The instrument must be calibrated before use, that is more than 4 to 8 operation. If the instrument is turned off, can be continuously measured, once the shutdown is necessary to calibrate. But 12 hours, if not shut it must be calibrated once. A) PH meter price of a portable pen several price 300-900,2 laboratory PH meter PH meter prices 1500-3000, Industrial Online PH meter price of domestically produced three or four thousand, two imported 8000-10000) PH pH meter gauge principle with potential measurement is to measure the pH of the most sophisticated methods. pH meter consists of three components: (1) a reference electrode; (2) a glass electrode PH meter PH meter doing with its potential depends on the pH of the surrounding solution; (3) a galvanometer, the galvanometer can measure small potential difference in the resistance great circuit. As a result of the latest design and solid electrode circuit technology, and now the best pH can distinguish 0.005pH units. The basic function of the reference electrode is to maintain a constant potential, as a measure of deviation from the control of various potentials. Silver - Silver Oxide pH electrode is currently the most commonly used reference electrode. Functional glass electrode is to create a solution to respond to changes in hydrogen ion activity by measuring the potential difference. The pH-sensitive electrode and a reference electrode in the same solution, on the formation of a galvanic cell, the potential of the battery and the glass electrode and a reference electrode potential than algebra. E cell = E + E glass reference, if the temperature is constant, the cell potential versus pH test solution varies, and measured potential acidity produced in the cell is difficult, because the electromotive force is very small, and the circuit The impedance is very large (1-100MΩ); therefore PH meter PH meter, the signal must be amplified, it is sufficient to push the standard Millivoltmeter or milliammeter. Galvanometer original potential of the battery function is enlarged several times, the amplified signal is passed through the meter shows that the degree of deflection of the meter pointer indicates a signal intensity which pushes, in order to require the use of, pH meter dial engraved with a corresponding pH value; and digital pH meter directly to a digital show a pH meter PH meter PH where a hundred with _ Technology (certified) _PH meter PH meter provided by Changzhou Best Technology Limited. Changzhou one hundred Technology Limited (www.czbckj.com) Jiangsu Changzhou, chemical instrumentation leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In one hundred as a technological leader with the staff warmly welcome all inquiries negotiations to create one hundred to a better future technology.