Coulometric Karl Fischer titrator EzCoul: High sensitivity for trace moisture analysis

When determining moisture content at the trace level (ppm) is of utmost importance, the EzCoul Coulometric Karl Fischer titrator by Electrolab emerges as a leading solution. This instrument is specifically designed to quantify minute amounts of water with exceptional sensitivity and accuracy, making it ideal for the pharmaceutical, petrochemical, and solvent industries, where the smallest amount of moisture can impact product quality.

Breakthrough features of the EzCoul coulometric titrator

The EzCoul integrates advanced technologies to deliver powerful analytical capabilities and a modern user experience.

Exceptional sensitivity for trace moisture analysis (ppm)

With a wide measurement range from 1 µg to 100 mg of water (equivalent to ppm up to 100%) and a sensitivity of just 0.1 µg, the EzCoul is the perfect tool for analyzing samples with extremely low moisture content, which is challenging for the volumetric method.

Coulometric principle: No titrant standardization needed

Unlike the volumetric method, the coulometric method generates its own iodine from the reagent directly within the titration cell. This completely eliminates the titrant standardization step, saving time, minimizing errors, and simplifying the daily workflow.

Versatile: Determines Bromine Index and moisture

In addition to moisture determination, the EzCoul is also capable of determining the Bromine Index in petroleum products at trace levels, expanding the instrument’s application range and providing added value for petrochemical laboratories.

Modern operation and GLP-compliant data management

The device is equipped with a high-resolution 7-inch color TFT touch screen, a user-friendly interface, and wireless connectivity options. All results are GLP-compliant, fully documented with information (date, time, sample name, operator’s name), ensuring data integrity and traceability.

Detailed technical specifications

• Model: EzCoul

• Principle: Coulometric Karl Fischer Titration

• Measuring Range: 1 µg – 100 mg water (ppm to 100%)

• Sensitivity: 0.1 µg

• Precision: ± 3 µg (for 10-100 µg), ± 0.5 % (above 1 mg)

• Drift Compensation: Automatic

• Method Storage: 100 user-programmable methods

• Report Storage: 100 reports

• Display: 7-inch color TFT touch screen

• Connectivity: 3 USB ports (printer, external drive)

Frequently asked questions (FAQ)

1. What is the difference between Coulometric and Volumetric Karl Fischer titration?
The main difference is in how iodine is generated and the measurement range. Coulometric (EzCoul) generates iodine via an electric current, requires no burette, and is ideal for very low water content (ppm). Volumetric (ezFiSCHR) uses a burette to add a Karl Fischer titrant of known concentration and is suitable for higher water content (%).

2. What does “Automatic drift compensation” mean?
The Karl Fischer titration cell is very sensitive to ambient moisture from the air. This feature allows the instrument to continuously measure and automatically subtract this ingress of moisture (known as drift), ensuring that the final result reflects only the water from the sample, thus providing the highest accuracy.

3. What is the Bromine Index and why is it important?
The Bromine Index is a measure of the degree of unsaturation (double bonds) in hydrocarbon compounds. It is an important quality control parameter in the petroleum and petrochemical industries.

4. Do I need a special type of reagent for this instrument?
No, the EzCoul is compatible with all types of common coulometric Karl Fischer reagents on the market, including both single and double component setups, offering flexibility to the user.

5. Is this model 21 CFR Part 11 compliant?
The product documentation highlights GLP compliance with fully documented reports. For confirmation regarding 21 CFR Part 11 compliance, it is best to contact the manufacturer directly for the most accurate information.