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.

 

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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