AKF-CH6 Karl Fischer Moisture Titrator

Precise Moisture Determination for Battery Research

The AKF-CH6 Karl Fischer Moisture Titrator is a specialised analytical instrument for trace water determination in lithium battery materials, including cathode and anode powders, coated electrodes, separators, electrolytes, and selected gases. It uses the Karl Fischer coulometric method, which is well suited to low-level moisture analysis because water reacts selectively with Karl Fischer reagent and the endpoint is detected electrochemically. In practical battery research, this is especially valuable because even small amounts of residual moisture can affect electrolyte stability, interfacial chemistry, material handling, and cell performance.

Working Principle and Key Features

This instrument integrates a moisture measurement module with a heated sample introduction module, enabling direct, puncture, cover-change, and purge feeding modes for different sample formats. The published specification indicates an H₂O measurement range of 3 μg to 199 mg with 0.01 μg resolution and repeatability of at least 99.7% at 1000 μg H₂O. It supports liquid, solid, and gas samples, with temperature-programmed heating from room temperature to 285 °C at 0.1 °C control resolution, and a heating rate of 15 °C/min below 200 °C. External dry air or nitrogen can be used as the carrier gas, with flow control up to 100 mL/min.

Why It Suits Advanced Battery Laboratories

For battery R&D, the combination of coulometric KF titration and controlled heating is useful for samples that release moisture only after thermal extraction, such as powders, separator films, and coated electrodes. The manufacturer positions this platform specifically for cathode electrodes, electrolytes, and separators, while broader Karl Fischer guidance confirms that coulometry is preferred for trace moisture and that KF methods are applicable across liquids, solids, slurries, and gases.

Typical Applications

• Cathode and anode active material moisture testing
• Electrode sheet and separator quality control
• Electrolyte moisture verification
• Materials screening for lithium-ion, sodium-ion, and related electrochemical research
• Laboratory workflows requiring trace water analysis before cell assembly
  
  

Why Choose ScienceGears

ScienceGears supports researchers in Australia and New Zealand with application-focused guidance, helping laboratories select suitable moisture analysis tools alongside related battery research infrastructure such as glove boxes, coating systems, vacuum drying equipment, battery cyclers, and electrochemical test platforms. This makes it easier to build a coherent workflow from material preparation through to electrochemical evaluation. The instrument itself is published with compact benchtop dimensions of 500 × 250 × 360 mm, 300 W power, and a weight of 11.5 kg, making it suitable for research laboratories where footprint and integration matter.