WKT-A9 'Exquisite' Karl Fischer Trace Moisture Analyzer — Application at Zhengzhou Lansen Biotechnology — VicoMeter | Jiangsu Victor Instrument Meter Co., Ltd.

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Customer Profile

Lansen Biotechnology purchased the VicoMeter WKT-A9 'Exquisite' Karl Fischer trace moisture analyzer together with the matching WKT-V1 Karl Fischer oven. Based on the coulometric Karl Fischer principle, the VicoMeter WKT-A9 'Exquisite' rapidly determines trace moisture in samples down to 0.001ppm, and can measure trace moisture in solids, liquids, and powders within 1 minute. The instrument features a built-in printer and can store 500 sets of data for real-time query and printing. Innovative navigation-style prompts and a built-in electronic manual make operation effortless. Complying with multiple national and international moisture determination standards, the WKT-A9 includes eight built-in moisture calculation formulas and six determination methods to meet the needs of various industries. It is widely used in the chemical, petroleum, pharmaceutical, power, food, research, and testing industries.

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

WKT-V2 Karl Fischer Oven Moisture Measurement System

When measuring moisture with a Karl Fischer analyzer, most samples can be added directly to the generator cell/titration cell for simple, accurate testing. Some samples, however, cannot be added directly because their moisture is not released naturally or they undergo side reactions with the Karl Fischer reagent — for example powders, granules, pastes, and oxidizing inorganic salts.

For samples that cannot be added directly to the cell, pairing the WKT-V2 Karl Fischer oven for gas-phase extraction is the perfect solution. The sample is placed in a vial and moved onto the oven, heated to a specific temperature (up to 300˚C), and the moisture is extracted and carried into the cell by dry air or nitrogen, then measured perfectly.

VicoMeter at the Customer Site

When the VicoMeter technical engineer arrived at the customer's site, the customer had not yet decided where to install the instrument. After reviewing the laboratory together, they found only one fume hood, which already contained instruments, so other instruments could not fit inside and had to be placed outside. However, the reagents used in the Karl Fischer moisture analyzer must not be exposed to direct sunlight, so the instrument had to be placed further inside the laboratory. Once the installation location was confirmed, the engineer began installing the instrument. After installation, the engineer ran a test with pure water: 2ul of pure water gave a result of 1997ug. After the pure-water verification, tests were performed with the customer's lyophilized sample. With the WKT-V1 set to 105℃ and a delay time of 100S, two tests were run, giving results of 2.12% and 2.28%. The customer also ran two tests with the sample, obtaining 2.21% and 2.18%. The four results showed good repeatability and stability, and the customer was very satisfied with the VicoMeter instrument.

Customer Profile

Zhengzhou Lansen Biotechnology

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Zhengzhou Lansen Biotechnology

Zhengzhou Lansen Biotechnology Co., Ltd. was established on July 7, 2004, with its registered address at Rooms 20–22, 4th Floor, Building 3, No. 36 Hongsong Road, Zhengzhou High-Tech Zone, and its legal representative is Meng Lin. Its business scope includes Class I and II medical devices and Class III clinical laboratory analytical instruments; production of in vitro diagnostic reagents [6840]; research, development, and consulting services for biotechnology and related products; and sales of fine chemical products and testing reagents (excluding items prohibited by national laws and regulations or subject to approval). Zhengzhou Lansen Biotechnology Co., Ltd. has invested in one company and has one branch.