HZWS-C2 Coulomb Titration Method Karl Fischer Trace Moisture Titrator

Instrument features

●The 32-bit embedded microprocessor is used as the main control core to embed the mini operating system.

●0-400ma automatic detection, high precision, fast measurement speed, stable and reliable.

●The motherboard adopts high-quality SMT components with high integration, simple operation and long service life

●Contains 4 calculation formulas, and the measurement results are automatically converted to the required units and can be converted to each other.

●Color touch screen, full numeric keyboard, more concise operation, convenient and quick data calculation.

●With graph curve analysis to help analyze water content trend.

●Switching between Chinese and English at any time.

Technical parameters

Titration method：Coulometric titration（Coulomb analysis）

Display：Color LCD touch screen

Electrolytic current control：0～400mA automatic control

Measurement scope：1ug～200mg

Sensitive valve：0.1µg H2O

Accuracy：10µg～1000µg±3µg

More than 1mg but not greater than 0.3%

Printer：Miniature thermal printer

Matters needing attention

1, electrolyte matters needing attention

(1) In the normal determination process, every 100ml electrolyte can react with no less than 1g of water, if the determination time is too long, the sensitivity of the electrolyte decreases, the electrolyte should be replaced.

(2) The electrolyte in the cathode chamber should be replaced as soon as possible if strong bubbles are released or the electrolyte is polluted into light reddish brown during the determination process, and the blank current will increase, the reproducibility of the measurement will be reduced, and the time to reach the end point will be prolonged.

(3) The electrolytic time is more than half an hour, the instrument is not stable, stop stirring at this time, observe the ceramic filter plate at the bottom of the anode whether there is obvious brown iodine generation, if there is no or little iodine production, the electrolyte should be replaced.

(4) Care must be taken not to inhale or touch the electrolyte with hands. If it comes into contact with skin, rinse thoroughly with water. Due to the odor of the electrolyte, and contains certain toxic ingredients, so the laboratory should be well ventilated.

2, the determination of matters needing attention

When the sample is injected into the electrolytic cell, the needle of the liquid sampler should be inserted into the electrolyte. The liquid, solid, gas sampler and the sample should not contact the inner wall and electrode of the electrolytic cell.