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  Hybrid Karl Fischer Moisture Titrator
   MKH-700

mkh7001

  • Hybrid Karl Fischer Moisture Titrator MKH-700 has the world's first & convenient functions equipped such as high-speed & high-precision measurement by "Hybrid titration method" which uses both "Volumetric titration method" and "Coulometric titration method", and "Electrolytic Factor Measurement System" which does not require pure water for factor determination.

    Karl Fischer Moisture Titrator which is on the market is necessary to adjust the sample amount when carrying out the measurement. 
    "Hybrid titration method" automatically switches between the parallel measurement by "Volumetric titration method" and "Coulometric titration method" by monitoring moisture content in titration cell with high-speed & high-precision measurement, therefore can measure without adjusting the sample amount.

    With just pressing one button, the "Electrolytic Factor Measurement System" automatically performs the factor determination of Karl Fischer reagent, and save the time & work without using pure water.

    Features

    1) "Hybrid titration method"

    According to "Hybrid titration method", even if the water content of the sample is high, it can be carried out with high-speed & high-precision measurement.

    2) Easy factor determination by "Electrolytic Factor Measurement System"

    According to "Hybrid titration method", even if the water content of the sample is high, it can be carried out with high-speed & high-precision measurement.

    3) Unique integrated "Hybrid titration cell" of both "Volumetric titration method" & "Coulometric titration method"

    While ensuring the seal, making the titration cell and titration cell stopper separate, it improves the convenience for usage.

    4) Unique replaceable diaphragm inner burette

    To make the inner burette and diaphragm separate, although after measuring such as petroleum samples, it is easy to clean the diaphragm inner burette.

    5) One unit with three Karl Fischer titration method

    It is possible to select one method from "Volumetric titration method", "Coulometric titration method", and "Hybrid titration method".

    6) Equipped with USB flash port for data transfer

    It is possible to store the measurement result, method and manage the data as an electronic record.

    Application

    Standards Number Details
    ASTM D1533

    Standard Test Method for Water in Insulating Liquids

    by Coulometric Karl Fischer Titration
    D1744

    Standard Test Method for Determination of Water

    in Liquid Petroleum Products by Karl Fischer Reagent
    D4928

    Standard Test Method for Water In Crude Oils

    by Coulometric Karl Fischer Titration
    D6304 Standard Test Method for Determination of Water in Petroleum Products, Lubricating Oils, and Additives by Coulometric Karl Fischer Titration
    E203 Test Method for Water Using Volumetric Karl Fischer Titration
    ISO 760

    Determination of water – Karl Fischer method

    (General method)

    Specification

    Type Hybrid Karl Fischer Moisture Titrator
    Model MKH-700
    Coulometric titration Measuring method Karl Fischer Coulometric titration
    Measuring range Water content 10μg - 300mg H2O
    Precision RSD less than 0.3% (n=10)
    Display resolution 0.1μg
    Control method Constant current pulse time control
    Endpoint detection Alternate current polarization method with a twin Platinum electrode
    EP sense method Selective drift stability or Limit measurement time
    Titration form Normal titration/Back titration
    Titration cell Two component cell
    Required reagent Anolyte 100mL
    Catholyte 5mL
    Volumetric titration Measuring method Karl Fischer Volumetric titration
    Measuring range Water content 100μg - 500mg H2O (depends on KF reagent factor)
    Concentration 1ppm - 100% H2O
    Burette precision Volume 10mL
    Resolution 1/20,000
    Discharge precision ±0.015mL
    Repeatability ±0.005mL
    Endpoint detection By polarized potential level detected with a twin Platinum electrode
    EP sense method

    Detection of potential level maintained during End preset time.

    End time range : 1 - 99s.
    Titration form

    Normal titration/Back titration

    Add the optional additional burette unit.
    Required solvent 50 - 150mL
    Hybrid titration Measuring method

    Karl Fischer Coulometric titration

    Karl Fischer Volumetric titration
    Measuring range Water content 10μg - 500mg H2O
    Precision RSD

    less than 0.3% (n=10)

    (Karl Fischer reagent factor 3mg/mL)
    Display resolution 0.1μg
    Control method

    Automatic continuous titration

    Constant current pulse time control
    Endpoint detection Alternate current polarization method with a twin Platinum electrode
    EP sense method Selective drift stability or Limit measurement time
    Titration form Normal titration
    Required reagent Anolyte 100mL
    Catholyte 5mL
    Factor measurement of reagent by electrolysis Measuring method Factor measurement of reagent by electrolysis
    Measuring range KF reagent

    Reagent factor from 1 to 5

    (With the provisions of dose volume)
    Precision RSD

    less than 1.0% (n=3)

    (Dose volume 0.5mL, Reagent factor 3mg/mL)
    Control method Constant potential control
    Endpoint detection Alternate current polarization method with a twin Platinum electrode
    EP sense method Drift stability
    Required reagent Anolyte 100mL
    Catholyte 5mL
    Number of methods Coulometric/ Volumetric 
    Hybrid
    Up to 50
    Factor measurement 1
    Data storage On-board memory 300 data
    External memory Memory card (Compact Flash), USB flash
    GLP conformance Yes
    External I/O
    (Measuring unit)
    RS-232C 1ch (for Multiple sample changer/ Evaporator)
    SS-BUS 1ch (for APB)
    K-NET 1ch (for Main control unit)
    External I/O
    (Main control unit)
    COM1/COM2 2ch (for dot matrix printer, electronic balance, PC)
    CF card 1ch (Compact Flash)
    USB 1ch (USB flash)
    K-NET 2ch (Measuring unit)
    Main control unit 8-inch LCD (163.2 x 122.4mm)
    256 colors 800 x 600 dots
    Language English / Japanese
    Ambient conditions Temperature 5 - 35°C
    Humidity 85%RH or below (no condensation)
    Power supply Measuring unit

    DC24V 5A (Main unit)

    AC100-240V ±10% 50-60Hz 2A (Comes with AC Adapter)
    Main control unit

    DC12V 3A (Main unit)

    AC100-240V ±10% 50-60Hz (Comes with AC Adapter)

    Power consumption

    Measuring unit

    Stirrer
    Approx. 80W
    Main control unit Approx. 20W
    Dimensions Measuring unit 141 (W) x 296 (D) x 383 (H) mm (not incl. tubing)
    Main control unit 230 (W) x 285 (D) x 255 (H) mm
    Stirrer/Cell 110 (W) x 230 (D) x 350 (H) mm
    dispenser 240 (W) x 170 (D) x 110 (H) mm (not incl. tubing)
    Weight Measuring unit Approx. 4.5kg
    Main control unit Approx. 2.0kg
    Stirrer/Cell Approx. 1.4kg
    dispenser Approx. 0.6kg
    CE marking Conforming to EN61326, EN61010-1, RoHS compliant

 

           
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