Zeller+Gmelin Corporation, Germany

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Zeller+Gmelin Corporation, Germany
Zeller+Gmelin Corporation, Germany
Zeller+Gmelin Corporation, Germany
  • Zeller+Gmelin Corporation, Germany
  • Zeller+Gmelin Corporation, Germany
  • Zeller+Gmelin Corporation, Germany

Customer Profile

The customer purchased our latest coulometric Karl Fischer moisture analyzer, the WKT-A9. The WKT-A9 Karl Fischer titrator is a coulometric Karl Fischer moisture titrator independently designed and developed by our company with proprietary intellectual property rights—a Karl Fischer moisture analyzer aimed at mid-to-high-end applications.

WKT-A9 Karl Fischer Trace Moisture Analyzer Coulometric

WKT-A9 Karl Fischer Trace Moisture Analyzer Coulometric

WKT-A9 Karl Fischer Trace Moisture Analyzer Coulometric

Coulometric (coulometry) principle, ideal for trace-level testing; 5-inch color touchscreen with smart operation, automatic result calculation, and freely configurable sample IDs; complies with multiple national standards and suits virtually every industry.

  • 8 moisture calculation formulas, 6 determination methods, and 8 end-point detection algorithms

  • Automatic drift compensation, automatic subtraction of ambient and background moisture, and self-diagnostic fault alerts

  • One-touch start for reliable results

  • Outstanding automation — connects seamlessly to the Karl Fischer oven for difficult samples

  • RS232 interface for connection to a PC, printer, PLC, or LIMS


VicoMeter at the Customer Site

The customer had previously used a Mettler volumetric moisture analyzer, but after long service the instrument could no longer keep up with the company's development, some parts were aging and needed replacement, and the software needed updating. This time the customer wanted to switch to a domestic instrument. Since the accuracy and functionality of our WKT-A9 Karl Fischer titrator are comparable to their current Mettler moisture analyzer, the customer decided after consideration to purchase our instrument.

After the instrument arrived on site, our technical engineer visited to provide installation and guidance. Upon arrival, the engineer first unpacked the instrument together with the customer and checked the packing list—all accessories were complete with no errors. The engineer then installed the instrument while explaining testing, maintenance and care precautions. Afterwards, four tests were run on the customer's samples: the engineer performed two and the customer performed the other two. The results were stable with good repeatability.

Customer Profile

WKT-A9 Karl Fischer Trace Moisture Analyzer Coulometric

Zeller+Gmelin Corporation, Germany

(Click image to enlarge)

Zeller+Gmelin Corporation, Germany

Zeller+Gmelin GmbH, founded in 1866, provides high-quality products and customer-oriented service solutions. Whether in industrial/automotive lubricants, industrial chemicals or printing inks, Zeller+Gmelin's products enjoy a strong international position. It is a medium-sized company with 16 subsidiaries and trading partners worldwide.

Related Products

Related Knowledge

Karl Fischer Moisture Analyzers Karl Fischer Moisture Analyzers

A Karl Fischer moisture analyzer is an instrument designed on the Karl Fischer method to measure moisture content in materials. It is also known as a Karl Fischer moisture meter, fully automatic Karl Fischer moisture titrator, intelligent Karl Fischer trace moisture analyzer, or Fischer-method moisture meter, and comes in two types: coulometric and volumetric (titrimetric).

What Is the Difference Between Coulometric and Volumetric Karl Fischer Titration? What Is the Difference Between Coulometric and Volumetric Karl Fischer Titration?

The biggest difference between the volumetric and coulometric methods is that I2differ in their source: in the volumetric method, I2comes from the titrant reagent, while in the coulometric method, I2is produced by electrolyzing an electrolyte containing I-is generated by electrolysis of the electrolyte.

Which Samples Can a Karl Fischer Moisture Analyzer Test? Which Samples Can a Karl Fischer Moisture Analyzer Test?

As a classic moisture determination method, Karl Fischer titration is suitable for measuring water in a wide range of organic and inorganic substances. Because compounds vary in their properties, they fall into two categories: those that can be analyzed directly and those that cannot.

What Calibration Standards and Verification Methods Are Available for Karl Fischer Moisture Determination? What Calibration Standards and Verification Methods Are Available for Karl Fischer Moisture Determination?

VicoMeter Karl Fischer moisture analyzers are typically calibrated and verified using standards such as methanol-water standard solutions, water-containing sodium tartrate, distilled (deionized or pure) water, and water-saturated toluene. This article introduces the calibration substances, calibration methods, and accuracy verification procedures commonly used with VicoMeter coulometric and volumetric Karl Fischer moisture analyzers.

How to Ensure Moisture Reacts Fully with Karl Fischer Reagent How to Ensure Moisture Reacts Fully with Karl Fischer Reagent

As a professional instrument for moisture determination, the Karl Fischer moisture analyzer is widely used across industries. Ensuring that moisture reacts fully with the Karl Fischer reagent is the key to accurate moisture measurement in samples. How can this be achieved? That is the question this article answers. As an expert in the moisture field, VicoMeter walks you through it.

Measuring Sample Moisture with a Karl Fischer Moisture Analyzer Measuring Sample Moisture with a Karl Fischer Moisture Analyzer

The Karl Fischer moisture analyzer rapidly determines trace moisture in samples and is the most professional method for moisture content determination.

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