Which industries are widely used in moisture analyzers?

The infrared moisture analyzer is simple in operation, less time-consuming, and accurate in measurement results. Therefore, the infrared moisture meter can be widely used in laboratory analysis, daily stock control, and process detection in chemical, pharmaceutical, food, tobacco, food, and other industries.

It is best to consider automatic instruments when choosing. The Precisa Manual Moisture Analyzer requires the tester to visually measure the reagents in the glass burette and manually close them after reaching the end point. Delays due to different people's movement habits will cause unnecessary errors. When choosing, consider purchasing a fully enclosed test system. The exposed Karl-Fischer reagent is very easy to absorb water because of the presence of iodine, and the ethyl ester sample and methanol solvent to be tested should also avoid the situation where the moisture in the air dissolves into the resulting error. Metering pump life should be considered. The metering pump is a key part of the volumetric moisture analyzer. The Karl-Fischer reagent is a highly corrosive reagent. A metering pump made of fluoroplastic and other corrosion-resistant materials should be purchased as far as possible to prevent leakage and cause the instrument to leak. Retired. Electrode problem. This part belongs to the core part of the instrument. On the one hand, it should have high sensitivity. On the other hand, because it is immersed in the test cell during the test, it is best to choose a platinum electrode instrument with high quality to maintain the electrode life.

Main principle: Calculation of conductivity after chemical reaction, complex structure, large volume, highest measurement accuracy, suitable for determination of moisture content below 100PPm. It is generally used in the determination of chemical and pharmaceutical industries such as anion polymerization that have very strict requirements on moisture, or used in large-scale color printing plants with multiple frequencies, and is more expensive. The structure is relatively simple, the volume and accuracy are moderate, suitable for the determination of moisture content 10PPm ~ 10%, generally used in the chemical, pharmaceutical and packaging industries with strict requirements on the determination of the water, the price from a few thousand to tens of thousands of dollars .

For the general flexible packaging industry, when measuring the moisture content of solvents such as ethyl acetate, the Karl Fischer Volumetric Moisture Analyzer fully meets the requirements of 2 to 10 measurements per day and is economical. Infrared instruments, small size, wide measurement range, poor accuracy, suitable for moisture content of 5% to 90% of the determination of wood, paper and other materials, simple structure, low prices.

The reaction continues and water is continuously consumed to generate I-, Precisa until the end of the reaction titration, water consumption is complete. At this time, there was a trace amount of Karl Fischer reagent that did not react, and I2 and I- were present at the same time. The solution between the two platinum electrodes started to conduct electricity, and the current reached the end point and the titration was stopped. The moisture content in the solution is thus calibrated by measuring the volume (capacity) of spent reagent that has been consumed.