Moisture Tester by Mixed Titration Method (MKH-710M)

Hybrid Titration Moisture Analyzer (MKH-710M)

The Hybrid Karl Fischer Moisture Titrator MKH-710M is a product of Kyoto Electronics Manufacturing (KEM) and the world's first Karl Fischer moisture titrator that combines volumetric titration and coulometric methods. Utilizing the advanced design concept of "Hybrid Titration," it enables rapid and accurate measurement of moisture content in samples. Additionally, it performs automatic titer calibration without the need for reference materials.

When measuring with volumetric or coulometric Karl Fischer moisture analyzers, sample quantity must be controlled. The Hybrid Moisture Measurement Method automatically performs parallel operation of volumetric titration and coulometric methods based on the moisture content in the measurement cell, delivering high-speed and high-precision measurement results. It features an original electrolytic calibration measurement system. With just a single button, it automatically tests the titer of volumetric Karl Fischer reagents, eliminating human error and eliminating the need for pure water or reference materials for titer calibration.

Key Features of the Hybrid Titration Moisture Analyzer (MKH-710M):

1. World's first hybrid titration method: Enables fast and high-precision testing even with high moisture content in samples.
2. Original advanced electrolytic calibration measurement system: Automatically performs titer correction with no human error and high accuracy.
3. Integrated measurement cell: Shared and separable titration cup for both volumetric and coulometric methods, ensuring sealing and improving convenience.
4. Intelligent burette: Titrant information is stored in a chip, and two burettes can be installed simultaneously on the measurement unit.
5. Simultaneous measurement with four units: The main control unit can connect to four measurement units simultaneously and perform tests concurrently.
6. Wireless Bluetooth transmission: The main control unit and measurement units can communicate via Bluetooth adapter for safer operation.
7. Replaceable diaphragm for generating electrode: Detachable electrode diaphragm facilitates cleaning and maintenance for oily or contaminated samples.
8. Three measurement modes: Volumetric titration, coulometric, or hybrid methods can all be performed in the same measurement cell.
9. Standard USB port: Uses USB drives to store methods and results as electronic records, with access control functionality.

Technical Specifications of the Hybrid Titration Moisture Analyzer (MKH-710M):

Coulometric Method
Measurement range: Moisture 1μg～300mg H2O, Bromine Index 8μg～300mg Br.
Accuracy: RSD less than 0.3% (n=10) (when measuring 1mg moisture).
Resolution: 0.1μg.
Control method: Constant current pulse time control.
Endpoint detection: AC polarization method with dual platinum detection electrodes.
Endpoint judgment: Drift stability determination or set measurement time.
Volumetric Titration Method
Measurement range: Moisture 100μg～500mg H2O (depending on Karl Fischer reagent titer).
Moisture content: 1ppm～100% H2O.
Burette accuracy: 10mL, resolution 1/20,000, accuracy ±0.015mL, repeatability ±0.005mL.
Endpoint detection: Polarization potential detection with dual platinum electrodes.
Endpoint judgment: Endpoint determined by polarization potential duration, endpoint time range 1～99 seconds.
Volumetric-Coulometric Hybrid Method
Measurement method: Karl Fischer volumetric titration and Karl Fischer coulometric methods.
Measurement range: 1μg～500mg H2O.
Accuracy: RSD less than 0.3% (n=10) (when measuring 10mg moisture) (Karl Fischer reagent titer 3mg/mL).
Resolution: 0.1μg.
Control method: Speed auto-switching continuous titration (volumetric titration), constant current pulse time control (coulometric method).
Endpoint detection: AC polarization method with dual platinum detection electrodes.
Endpoint judgment: Drift stability determination or set measurement time.
Electrolytic Method for Titer Measurement
Measurement range: Reagent titer 1～5 (depending on specified injection volume).
Accuracy: Less than 1.0% (n=3) (injection volume 0.5mL, titer 3mg/mL).
Control method: Constant voltage control.
Endpoint detection: AC polarization method with dual platinum detection electrodes.
Endpoint judgment: Drift stability determination.
Main Control Unit
Number of methods: 120 measurement methods.
Data storage: 500 data sets.
Display function: 8.4-inch color LCD touch screen, capable of controlling four measurement units simultaneously, with Chinese/English/Japanese/Korean operation interface.
GLP certification: Operator name and user group management, titer measurement notification and residual quantity notification, burette piston replacement notification and titrant replacement notification, titer measurement records and inspection date notification, inspection date notification and inspection result records, display of operation time.
External outputs: RS-232C×4, USB×1, SS-USB×1, LAN×1.
Power supply: AC100～240V±10%, 50Hz/60Hz.
Power consumption: Approximately 50 watts.