The COM-300A titrator from AQUACOUNTER offers the Total Solution. It is reliable and simple to operate yet expandable and upgradeable The COM-300A can be upgraded to fit your growing demands.
mV Range -2000 to 2000
mV Resolution 0.1 mV
pH Range 0 to 14
pH Resolution 0.01 pH
Titrator Type Potentiometric Optional: Photometric titration, Volumetric Karl-Fischer titration
Depth 270 mm
Height 310 mm
Width 310 mm
Weight 7 kg
Additional Specifications Electrode Inputs: Indicator electrode: 1
Reference electrode: 1
Thermistor electrode: 1
KF electrode: 1
Titration steps: Up to three(3) steps
Number of Endpoints: Up to two(2) points
End point detection: Automatic detection by:
-Inflection point
-Set point
-F Cross point
-B Cross point
Display screen: 2-lines by 16 digits with backlit LCD
Display unit: pH, mV, mgH2O, %, ppm, M, g/L, mg/g, Fact1, Fact2
pH calibration: 2 or 3 points (compliant to ASTM or other standard buffers)
File function: 30 files for potentiometric titrations
3 files for Karl-Fischer titrations
10 files for titration control methods
Calculation function: Concentration calculation, Statistics calculation
Memory data capacity: 50 titration results along with titration curves and parameters and via external computer
Precautions against power failure: Built-in backup battery
Electrodes (Standard component): GE-101B Glass electrode
· RE-201 Reference electrode
· TE-401 Thermistor electrode
Buret: Capacity: 20 mL, Minimum drop size: 0.01mL
Reproducibility: within ±0.01 mL
Tubing: Teflon tube of 2 mm(ID) and 3 mm(OD)
Switching Valve: Automatic switching valve with ceramic joint.
Stirrer: Integrated, variable speed, magnetic stirrer
Printers: Optional thermal printer; PR-2000T2(PRINTY3), Optional impact printer; PR-302B(CBM-910-40PF)
External input / output: RS-232C; 2 ports
Port 1 (BALANCE):For connection to electronic balance.
Port 2 (HOST):For connection to external computer.
Power supply / Power consumption AC100 - 240 V, 50/60 Hz, 100 VA
Weight: Approx. 7 kg


  • All components are integrated in a small footprint of 31 cm (W) x 27 cm (D).
  • Saves valuable bench space.

  • Performs acid/base, redox, precipitation and complexometric titrations.
  • Combining optional KF kit, performs Karl Fischer moisture determination.
  • A wide selection of electrodes

  • 30 user defined methods plus 3 KF methods can be stored in memory and easily recalled according to samples.
  • Up to 50 results with titration curve can be stored with statistics calculation.

  • Equipped with two RS-232C ports for balance and computer connection.
  • Standard package includes AQUANet data download software, instruction movie, application guidebook and more.


COM-300A Automatic Titrator

COM-300A Automatic Titrator

Manuals and Resources

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How I can to perform astmD2896 tbn determination by precluric acid using com300A ? What is the stepes to do this test ?


Hi Ihav aquestions about com-300A what is the best program for TBN test How ican know the end sens for evry test like TBN  acidity If iwant to titrates the prechloric acid with potasium phthalat  can i use...


My Labs COM-300A won't calibrate. I set it to calibrate 3 points at a pH of 4, 10 and 11. After setting this I pressed option, then 1, then I hit enter twice. I then let it settle on a pH and hit enter again. But it will just beep 3 times and...

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