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Xiamen Longlide Environmental Technology Development Co., Ltd
Laboratory pH/ion meter
NegotiableUpdate on 05/01
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Overview
German WTW laboratory pH/ion meter, a laboratory ion meter that can measure pH, automatically/manually calibrates pH, allows 3-point calibration, and displays pH and temperature simultaneously
Product Details
German WTW laboratory pH/ion meter, a laboratory ion meter that can measure pH, automatically/manually calibrates pH, allows 3-point calibration, and displays pH and temperature simultaneously
Laboratory pH/Ion Meter inoLab pH/ION 735
Performance characteristics:
1. Automatic/manual pH calibration, allowing 2/3/5 point calibration, while displaying pH and temperature
When measuring ion concentration, the concentration can be directly displayed in mg/l or user-defined
3. The detection potential resolution can reach 0.1mV, and if it exceeds 199.9mV, it is 1mV
4. The mV value used for testing concentration is accurate to 0.1 mV
5. Three of the 16 standard solutions with concentrations between 0.1-1000 mg/l can be selected for calibration
6. Built in recorder
Related instruments:
ISE electrode/ion electrode
1) Classification
Divided into four types from the diaphragm: gas sensing electrode, solid-state electrode,
Glass electrode, ion exchange electrode.
2) Can test up to ten types of ions
For example: Br, Cd+, Ca2+, Cl -, Cu2+, F -, I -, Pb2+, Mn -, K+,
Na+, Ag+ , S2-, SCN-, NH3, NO3-
Eight ISE testing methods
Direct testing method: Using one to two points for calibration within a linear range and six points for calibration throughout the entire range to establish a calibration curve is an optimal standard method.
Known addition method: for high concentration and variable concentration samples
Sample addition method: for samples with high ion concentration
Blank value correction: a special method used for low concentration testing.
Sample reduction method: For samples that can only be indirectly tested, add some sample or standard solution to the sample until the potential changes to a certain value. Enter the added volume, and the pMX3000 (old instrument) will automatically calculate the ion concentration of the sample.
Known addition method for secondary addition: an optimal way to test samples with high ion concentration or different temperatures.
Known reduction method: The test ion reacts with the standard solution to form a precipitate or complex, which can replace the complex titration process.
