Multiple Sample Changer for Coulometric Karl Fischer Moisture Titrators

Multiple sample evaporator for Coulometric Karl Fischer Moisture Titrators, suitable for the continuous measurement of up to 24 samples.
The heating temperature can be set for each sample individually, different kinds of sample can thus be measured automatically one after the other. An auto power off function after measurement ensures safe operation.



  • End detecting function of sample measurement

The built-in cup sensor detects the end of multiple sample measurement, and turns off the power automatically.

  • Scan mode for sample evaporation temperature

Scan mode for sample evaporation temperature can be used when MKC-710M, MKC-710S, MKH-710M, MKH-700 or MKC-610 is connected. The patented (pending) scan mode determines optimal evaporation temperature based on the relation between extracted water and heating temperature rinsing consecutively in the oven.

  • A plural number of measurements

A plural number of measurements can be performed for one sample, and the coherent water and combined water can be measured at the same time.

  • Auto-power off function

The auto-power off function secures safety and saves power and nitrogen gas even when it is operated at night unattended. This function can be turned on while measurement is underway.

  • Sample vial purge

The patented sample vial purge before heating eliminates the blank effect of the vial, and increases measurement precision. (Japanese Patent Office: No. 3052970)

  • Heating range: Room temp. to 300℃

Heating range is room temp. to 300℃.

  • Heating temperature setting of each sample

Heating temperature can be set for each sample.

  • Self-check function

This sampler is equipped with diagnosis function, which checks sequence program, keypad and display performance.


Type Multiple Sample Changer
Model CHK-501
Number of vials 24 vials
Heating temperature Setting range Room temp. to 300℃
Heating method Electric oven heating over outside surface and bottom
Ambient condition Temperature: 15 to 35℃
Humidity: 0 to 85%RH
Power Supply AC100-120/200-240V±10%, 50/60Hz)
Power Consumption Approx. 820W (Main unit: 100W)
Dimensions 452(W)×400(D)×362(H)mm
Weight Approx. 20kg

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