Volumetric Karl Fischer Moisture Titrator MKV-710S

GB/T 6283-2008 Determination of Water Content in Chemical Products - Karl Fischer Method (General Method)
Principle
Any water present in the sample (free water or water of crystallization) quantitatively reacts with the Karl Fischer reagent (a solution composed of iodine, sulfur dioxide, pyridine, and methanol) of known titer.
Note: Methanol can be replaced by ethylene glycol monomethyl ether. Using this reagent allows for more consistent titration volumes and enables the determination of water content in certain aldehyde and ketone chemical products without the need for any specialized techniques.

GB/T 606-2003 Chemical Reagents - General Method for the Determination of Water - Karl Fischer Method
Principle
The Karl Fischer reagent (a solution composed of iodine, sulfur dioxide, pyridine, and methanol or ethylene glycol monomethyl ether) can quantitatively react with water in the sample. The reaction equations are as follows:
H2O + I2 + SO2 + 3C5H5N → 2C5H5N·HI + C5H5N·SO3
C5H5N·SO3 + ROH → C5H5NH·OSO2·OR
Dissolve the sample in a suitable solvent (or extract the water from the sample), titrate with Karl Fischer reagent of known titer, determine the titration endpoint by the dead-stop method or visual method, and then calculate the mass fraction of water in the sample.

Main Features of Volumetric Karl Fischer Moisture Titrator MKV-710S:

1. Equipped with a large 8.4-inch color LCD touch screen for easy operation and control.
2. The touch screen and main unit adopt a split design and can display simultaneously.
3. The measurement unit can be placed inside a fume hood for enhanced safety and reduced risk.
4. User permission settings function to prevent incorrect settings and facilitate management.
5. New burette unit reduces dead volume and reagent consumption.
6. Intelligent burette unit with reagent information stored in a chip.
7. Measurement results can be stored on a USB drive or generated as a PDF lab report.
8. Optional dual-channel burette for fully automatic reagent titer calibration.
9. Connect to Karl Fischer Oven ADP-611 for automatic determination of suitable heating temperature.

Technical Parameters of Volumetric Karl Fischer Moisture Titrator MKV-710S:

Name and Model: Karl Fischer Moisture Titrator MKV-710S.
Instrument Composition: MCU-710S + MKV-710 + Solvent Exchange Unit (optional).
Measurement Method: Karl Fischer volumetric titration.
Measurement Range: 1) Water Content: 0.1～500mg H2O, 2) Water Concentration: 1ppm～100% H2O.
Burette Accuracy: Burette Volume: 10mL, Accuracy: ±0.015mL, Repeatability: ±0.005mL.
Endpoint Determination: Endpoint is determined when the polarization potential duration is within the set range; endpoint time: 1～99 seconds.
Titration Type: Direct titration/Back titration (requires optional second burette unit).
Solvent Requirement: 30mL～100mL (S-type titration cup).
Measurement Methods: 120 measurement methods.
Input Settings: Touch screen input.
Display: 8.4-inch color LCD screen, supports eight languages: Chinese/English/Japanese/Korean/Russian/Spanish/German/French; single-channel display.
Calculation: Concentration calculation, statistical calculation, automatic input of blank value and titer.
Data Storage: 500 sample results.
GLP Certification: Operator/User group management, reagent management, performance check, time management.
External Output: RS-232C (printer/balance/data software/Karl Fischer oven), USB (USB drive/thermal printer/A4 printer/keyboard/barcode reader/foot switch/USB hub), SS-BUS (APB).
Expansion Functions: Second burette drive unit, moisture evaporator ADP-611.
Operating Environment: Temperature: 5～35°C, Relative Humidity: Below 85% RH.
Power Supply: AC100～240V ±10%, 50Hz/60Hz.
Power Consumption: Main unit: approx. 30W, Printer: approx. 7W.
Dimensions: Touch screen: 225(W)×190(D)×42(H)mm, Titration unit: 141(W)×296(D)×367(H)mm, Stirrer: 107(W)×206(D)×322(H)mm.
Weight: Touch screen: approx. 1.5kg, Titration unit: approx. 4.0kg, Stirrer: approx. 2.0kg.