Karl Fischer Moisture Analyzer with Drying Oven

MT-MC804

Optimized for Lithium Battery Materials and Reactive Solid Samples

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moisture analyzer with drying oven

Introduction

The Karl Fischer Moisture Analyzer with Drying Oven is a complete moisture analysis system designed for samples that cannot be measured directly by conventional Karl Fischer titration. By combining a Karl Fischer coulometric moisture analyzer, a Karl Fischer drying oven, and an external carrier gas source, the system enables accurate and reliable moisture determination through thermal extraction.

This solution is especially suitable for insoluble solids, particulate and sheet-shaped materials, as well as samples that chemically react with Karl Fischer reagents. Typical applications include lithium battery materials, plastic pellets, metal powders, surgical sutures, battery electrolytes, and electrode sheets, where trace moisture control is critical.

Typical Applications

  • Lithium battery materials (lithium salts, electrodes, electrolytes)
  • Plastic pellets and polymer materials
  • Metal powders and particulate solids
  • Insoluble or reactive solid samples
  • Quality control and research laboratories

System Composition

  • Karl Fischer Coulometric Moisture Analyzer
  • Karl Fischer Drying Oven
  • Carrier Gas Source (external)

Karl Fischer Moisture Analyzer

The moisture analyzer is based on the classical Karl Fischer coulometric titration method, enabling rapid and precise moisture determination. It supports analysis of liquid, solid, and gas samples with a wide moisture range from 0.0001% (1 ppm) to 100%, with typical results obtained within one minute.

The instrument is widely used in chemical, petroleum, power, scientific research, railway, and industrial quality control applications.

Key Features

1. Microprocessor-controlled system for intelligent and automatic moisture determination

2. LCD display for clear visualization of test status and results

3. Electrostatic spray-coated housing for corrosion resistance and easy cleaning

4. Automatic blank current compensation for fast reagent equilibrium

5. Electrolysis current adjustable from 0 to 430 mA for high sensitivity and fast analysis

6. Automatic storage of measurement results for convenient historical review

7. Automatic calculation of µg, ppm, %, mg/L, sample name, and test date

8. Multi-language user interface with upgradeable software

Technical Specifications

Name

MT-WC804 Fully Automatic Karl Fischer Moisture Analyzer with Drying Oven

Display

LCD screen

Measurement Method

Microprocessor-controlled Karl Fischer volumetric titration

Electrolysis Speed

2.4 mg of water per minute

Electrolysis Current

0-430 mA, automatic control

Measurement Range

0.1 µg water to 200 mg water

Moisture Content Range

0.0001% (1 ppm) – 100%

Sensitivity

0.1 µg H₂O

System Accuracy

±3 µg (100–1000 µg H₂O), ±0.2% (>1000 µg H₂O, excluding sampling error)

Drift Compensation

Automatic drift compensation controlled by microprocessor

Stirring Speed

Adjustable stirring speed control

Endpoint Indication

Screen display / Print output / Sound alarm / End-point light indication

Power Consumption

Less than 40 W

Dimensions (W × D × H)

360 × 310 × 135mm

Operating Conditions

Temperature: 5°C – 40°C, Humidity: < 85% RH

Power Supply

AC 220 V ±10%, 50 Hz ±2.5 Hz

Weight

6 kg

Applicable Standards / Compliance Standards

Karl Fischer Coulometric Method for Water Content Determination

  • ASTM D4928-00 (2010) – Standard Test Method for Water Content of Crude Oils by Coulometric Karl Fischer Titration
  • ASTM D6304-2007 – Standard Test Method for Determination of Water in Petroleum Products, Lubricating Oils, and Additives by Coulometric Karl Fischer Titration
  • ISO 10337:1997 – Crude Petroleum — Determination of Water — Coulometric Karl Fischer Titration Method
  • ASTM E1064-2008 – Standard Test Method for Water Content of Organic Liquids by Coulometric Karl Fischer Titration
  • SH/T 0246-1992 – Test Method for Water Content in Light Petroleum Products (Coulometric Method)
  • SH/T 0255-1992 – Test Method for Water Content in Additives and Lubricating Oils Containing Additives (Coulometric Method)
  • GB/T 7600-1987 – Determination of Water Content in In-service Transformer Oil — Coulometric Method
  • GB/T 3727-2003 – Determination of Trace Water in Industrial Ethylene and Propylene
  • GB/T 6023-2008 – Determination of Trace Water in Industrial Butadiene — Karl Fischer Coulometric Method
  • GB/T 6023-2008 – Determination of Trace Water in Industrial Butadiene — Karl Fischer Coulometric Method
  • GB/T 18619.1-2002 – Natural Gas — Determination of Water Content — Karl Fischer Coulometric Method

Karl Fischer Drying Oven

The Karl Fischer Drying Oven is designed to operate together with the moisture analyzer and a carrier gas source to enable indirect moisture determination. During operation, the sample is heated to release moisture, which is then transported by the carrier gas into the Karl Fischer titration cell for measurement.

This approach is essential for samples that are insoluble or reactive with Karl Fischer reagents, such as strong acids, strong bases, or highly oxidative and reductive materials.

The drying oven is extensively used for moisture testing of plastic pellets, lithium battery electrodes, and lithium salts, including lithium cobalt oxide (LCO), lithium iron phosphate (LFP), and lithium manganese oxide (LMO).

In lithium battery applications, many lithium salts react directly with Karl Fischer reagents, making direct titration unsuitable. The use of a Karl Fischer drying oven is therefore required and fully complies with GB/T 24533-2009, Appendix B (Moisture Content Test Method) for lithium-ion battery graphite anode materials.

Key Features – Karl Fischer Drying Oven

  1. Uniformly distributed heating positions to minimize temperature gradients and improve result stability
  2. Heated transfer lines to prevent moisture condensation during sample transport
  3. Sampling line with back-blowing function to prevent cross-contamination
  4. Microcontroller-based temperature control with digital display
  5. Interchangeable sample inlet interfaces compatible with various Karl Fischer moisture analyzers

Technical Specifications – Karl Fischer Drying Oven

  1. Sample Heating Temperature Range: Ambient to 300 °C, adjustable in 0.1 °C increments
  2. Transfer Line Temperature Range: Ambient to 150 °C, adjustable in 0.1 °C increments
  3. Calibrated Gas Flow Rate: 0–300 mL/min, continuously adjustable
  4. Temperature Resolution: 0.1 °C
  5. Sample Capacity: Up to 4 samples heated simultaneously

Why Choose Our Moisture Analyzer with Drying Oven

1. Engineered for Challenging Samples

Our Karl Fischer Moisture Analyzer with Drying Oven is specifically designed for samples that are insoluble, heterogeneous, or chemically reactive with Karl Fischer reagents. By separating moisture release and titration, the system ensures accurate and reproducible results even for complex lithium battery materials, polymers, and metal powders.

2. Proven Compliance with Industry Standards

The drying oven method fully complies with GB/T 24533-2009 for lithium-ion battery graphite anode materials and aligns with internationally recognized Karl Fischer coulometric principles, making it suitable for regulated industrial and R&D environments.

3. High Sensitivity with Long-Term Stability

A high electrolysis current (up to 430 mA), automatic drift compensation, and precise temperature control work together to deliver fast response, low detection limits, and consistent performance during continuous operation.

4. Flexible, Future-Proof System Design

The analyzer supports multi-language operation, software upgrades, and compatibility with various Karl Fischer ovens and accessories, protecting your investment as testing requirements evolve.

For detailed technical information, application support, or a customized quotation, please contact us or send an inquiry.

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FAQ – Moisture Analyzer with Drying Oven