Coulometric Water Analyzer for Karl Fischer Coulometric Titration

• Customization: Available
• After-sales Service: Lifetime Technical Support
• Warranty: Warranty Is 24 Months
• Model NO.: GD-3200
• Type: Karl Fischer Moisture Meter
• Analysis Method: Chemical Analysis
• Display: LED
• Application: Chemicals
• Portable: Portable
• Physical Analysis Type: Coulometric Water Analyzer
• Chemical Analysis Type: Karl Fischer Method
• Operating Mode: Touch Screen
• Heating Mode: Standard Heating
• Off Mode: Manual
• Test Standard: ASTM D6304. ASTM D1533. ASTM E1064. ASTM E203
• Electrolytic Current: 400mA Maximum
• Measurement Range: 3 - 9999.9 Ug
• Instrument Resolution Ratio: 0.1 Ug
• Titrator Display: 7 Inch High Definition True Color Touch Screen
• Printing: Wide Line Thermal Printing
• Power Supply: AC220V, 50Hz
• Power: 100W
• Karl Fischer Titration: Coulometric Titration for The Quantity of Water
• Transport Package: Wooden Case
• Specification: For Water Content Test
• Trademark: GOLD
• Origin: Made in China
• HS Code: 9031809090
• Production Capacity: 200PCS Per Month

Product Description

GD-3200 Coulometric Water Analyzer for Karl Fischer Coulometric Titration 

 

Product Description

Which Karl Fisher Titration is adopted depends on the estimated water content in the sample: 
Volumetric Karl Fischer Titration Iodine is added by a burette during titration, it is suitable for samples where water is present as a major component: 100 ppm - 100% Coulometric Karl Fischer Coulometric Karl Fischer Analysis Iodine is generated electrochemically during titration, it is suitable for samples where water is present in trace amounts: 1 ppm - 5%

Main Difference between Volumetric Karl Fisher Titration and Coulometric Karl Fisher Titrator:
1. In volumetry, moisture determination is made by taking into account the volume of reagent that is used in titration against moisture.
2. In coulometry, it is done by measuring current responsible for the generation of iodine.
3. The Coulometric Karl Fisher Titrator is used for assessing water content in petroleum and petrochemical products including oils, gasolines, solvents, and fluids as well as other products such as pharmaceuticals and cosmetics.
4. The Coulometric Karl Fischer titration is the ideal method to determine low moisture and water contents in samples (0.001 to 1% water content).

Product Parameters

1. Electrolytic current: 400mA maximum
2. Measurement range: 3 - 9999.9 ug 
3. Instrument resolution ratio: 0.1 ug
4. Accuracy: 3mcg water ±20%   10mcg water±10%   100mcg water±1%  more than 100mcg ±0.5% (sample introduction error is not included)
5. Display: 7 inch high definition true color touch screen (1024*600)
6. Printing: wide line thermal printing
7. Power supply: AC220V±10% 50Hz±5%
8. Power: 100W
9. Environment temperature: 0 - 50ºC
10. Environment humidity: ≤85%
11. Volume: 390×270×220
12. Weight: 6kg

Principle

Karl Flscher reagent reacts with water below:
1₂ + SO₂ + 3C₅H₅N + CH₃OH + H₂O = 2C₅H₅N·HI + C₅H₅N·HSO₄CH₃
The reagent solution used is prepared by mixing simple substance iodine, I- and SO₂-containing methanol, etc. The measurement is based on the conductibility of the equilibrium system consisting of simple substance iodine andI-. The following reactions proceed alternately on two electrodes when the current is imposed on them:

2I--2e→I₂
I₂ + 2e→2I-
There is an excess of I- in the solution, but the I- concentration change does not greatly affect the solution conductibility. The change of simple substance iodine concentration within a range will cause an effective change of the solution conductibility. We select the range in which the higher simple substance iodine concentration leads to the bigger change of solution conductibility, and measure the value of the current intensity generated by the voltage at both ends of the platinum electrode immersed in the solution. The current intensity reflects the solution conductibility. A sample is injected to the electrolyte. The water in the sample reacts. The tester can detect the iodine change in the reaction, while the tester can calculate the iodine consumption from the electric quantity consumed when the same amount of iodine is electrolyzed out. The mass of the water to be tested is directly indicated on the LED display. This tester has an electrolytic current autocontrol system, which can automatically control the electrolytic current according to the water content of the sample. The maximum electrolytic current is up to 400 mA. During electrolysis, the water content gradually reduces, and the electrolysis rate reduced proportionally till an equilibrium point. The corresponding control loop of end point of titration starts, and the tester stops of measurement accumulation. This system ensures high analysis precision, sensitivity and speed. In addition, some interference factors unavoidably exist during measurement. For example, blank current is generated in the titration cell because of the water immersed in air. However, this tester has the memory and subtracts blank current, so the mass displayed on LED display is the real water content of the sample.

After Sales Service

Service
Device Problem Handling	Social media 24 hours online communication
	Mail Seamless Docking
	Video Conferencing

 

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Packaging & Shipping

Packaging:
The Coulometric Water Analyzer are packaged with plastic box inside and carton box outside,1PC/Carton;
Delivery:
We will arrange delivery within 7 working days.
 

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Contact us

If you are interested in our Coulometric Water Analyzer or have any questions, please feel free to contact us.