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New Potentiometric Titrator COM-1700 series

The new automatic potentiometric titrator model COM-1700 series is upgraded and enhanced with the adaptation of a color touch panel screen, a USB flash memory port, a standard built-in thermal printer, a compact designed buret with easier use, extended lifetime and enhanced software. The COM-1700 series is by far the most advanced automatic titrator to be introduced and is the perfect choice for any and all automatic titration applications. The features and benefits of this titrator easily surpass all those that preceded it.

Features of COM-1700
reddotAdvanced functions and excellent operational performance  
  • Built-in thermal printer with easy paper-loading features!
  • Save & load titration parameters and result data on the USB flash memory!
  • 7.5 inch Large color touch screen (LCD protection film applied)
  • Browse the data by PC on a LAN connection!
reddotEasily control up to 4 independent multitasking workstations.
Additional Titration stations + Stirrers can easily allow end users to do different types of titration including potentiometric, photometric, polarization, and conductometric titrations in parallel. Configuring multiple titration stations with an automatic sample changer is also available.

Sample Changer Sample Changer
Control multitasking stations COM-1700 Stations
reddot A new compact design of the buret & the titration station.
The new design reduces bench space by 25% compared to the previous model. The new buret of the B-1700 is compatible with conventional COM series titrators.

COM-1700 compare

left: New B-1/00
right: B-2000 (conventional type)
COM-1700 Syringe comare

New syringe - Conventional type

Buretteļ½„reagent bottleļ½„ buret-tip combination features and all-in-one snap change buret head for easy assembly and maintenance.

The structure of the new syringe has a minimized dead volume for easy reagent exchange. (10mL, 20mL sizes)

COM-1700 reagent comment

POV determination in food processing oil

POV (peroxide value) …is an important parameter used to determine the degradation level of oil and fat for quality control purposes. The POV is expressed as milligrams of iodine liberated from potassium iodide per kilogram of sample. The amount of iodide equal to peroxide contained in the sample is liberated based on the chemical formula (1)


Liberated iodide is titrated with 0.01mol/L sodium thi osulfate solution as formula (2).


Reagents Titrant: 0.01mol/L sodium thiosulfate solution
Titration solvent: acetic acid : isooctane = 3: 2 25mL for one measurement
Additive: saturated potassium iodide solution
Electrodes Platinum-reference combination electrode PR-731B


Since oil and fat tend to be easily oxidized atmospherically, it is important to constantly monitor the procedure. An additional POV kit will enhance the process of titration with nitrogen purge and the following steps can be smoothly and efficiently completed for accurate results.

POV Steps Diagram

POV Results

Chloride Ion Heading


Nickel Sulfate


Purity of sulfamethizole