The AQUACOUNTER. AQ-2200S high-end titrator is ideal for the trace level water content determination with its excellent capability and upgraded performance.


Economical & Eco-friendly small-volume cell! Three types of electrolytic cell are available now. One-room small size cell will require only 25mL anode solution, helpful to cut back cost and waste.

Enhanced memory data capacity!

Store results data on the USB memory stick and the stored data can be read out on the color display.

Two KF channels run in parallel -- Plug and Play!

Combining one additional KF station with either a volumetric or coulometric module enables two different measurements to be performed at the same time. With both a volumetric and coulometric channel, one can measure moisture over the entire range from 1ppm to 100% or double your sample throughput with 2 identical KF stations. See an example of a 2 channel configuration below.

Intuitive control panel display!

Current status, data and function keys are displayed on a colorful and large screen. Color touch screen is 7.5-inches wide. All helpful and necessary information is always at hand!

Use less reagents!

Reducing expensive KF reagent consumption makes this more economical and

Browse data by PC on a LAN connection!

Result data with curves can be viewed on your PC
internet browsing program without optional software.

Built-in thermal printer!

Easy paper loading. High resolution, clear printout.



Titration method

Coulometric Karl Fischer titration method

Multitasking function

Up to two KF titration stations

(Double coulometric channels or combination of coulometric and volumetric channels)

End-point detection method

AC polarization potentiometric detection method

Background correction

Automatic correction (selectable ON/OFF)

Measuring range

10μg H2O ~ 99mmg H2O


CV ≤ 0.3%

(1g of 1mg H2O/mL water-in-methanol measured 10 times)

Required measurement time

FAST : 1.8mg H2O/min (30μg H2O)

MEDIUM : 1.2mg H2O/min (20μg H2O)

SLOW : 0.6mg H2O/min (10μg H2O)


Electrolytic cell capacity

Standard : 150mL (min.usage: approx. 100mL), two compartments

One-room : 150mL (min.usage: approx. 100mL), one compartment

Small : 75mL (min. usage: approx. 25mL), one compartment

Memory data capacity

Internal memory: 100 data / channel

USB flash memory (≥256MB): Max. approx. 9900 data

GLP compliant functions

Electrolytic cell maintenance, Measurement accuracy test

Calculation modes

6 modes corresponding to sample status and sampling methods


Built-in thermal printer (paper width: 58mm)

*Optional external printers:

Thermal printer PRINTY3 or Dot impact printer PR-302B

Touch panel screen

7.5 inch color graphics LCD

External input/output

RS-232C: 1 port, LAN: 1 port, USB flash memory stick: 1 port

Interface for Evaporators: 1 port

Power supply

AC100-240V, 50/60Hz, 100VA

Dimensions / Weight

Main unit: 220(W) x 400(D) x 200(H) mm / Approx. 5kg

AQ-2200AS Coulometric Karl Fischer Titrator

Save $500

$8,390 $8,890

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