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Automatic Potentiometric Titrator, ZDJ-4A

  • Titration modes: DET, SET, MAT, MET
  • The generation of special titration modes is available
  • Preinstalled burette: 10ml / 20ml
  • Support pH calibration and measurement
  • Power-off protection

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1.LCD display screen.
2.Titration methods and results are displayed.
3.Preinstalled burette with high-accuracy (10 ml or 20 ml selectable).
4.Support the following titration modes: DET (Dynamic equivalence point titration), SET (Preset Endpoint Titration), MAT (manual titration) and MET(Monotonic equivalence point titration)
5.pH calibration and measurement are supported.
6.Store up to 50 titration data sets (GLP-compliant).
7.Data can be easily transferred to printer via RS-232 communication interface.
8.Titrator can be controlled by computer via RS-232 communication interface.

Instrument includes
10ml Burette, Platinum Electrode, Silver Electrode, pH Electrode (indicator), Single Bridge Reference Electrode, Double Bridge Reference Electrode, pH Buffer Powders (4.01, 7.00, 10.01).

Optional accessories
20ml Burette, Anti-diffusion Capillary.


The ZDJ-4A automatic potentiometric titrator is a laboratory analytical instrument with high analytical accuracy. It is mainly used for chemical analysis of various components in various industries such as universities, scientific research institutions, petrochemicals, pharmaceuticals, drug testing, and metallurgy.


Model ZDJ-4A
Burette Repeatability 0.2%
Accuracy 10ml Burette: ±0.025ml;

20ml Burette: ±0.035ml

Resolution 10ml Burette: 1/10000;

20ml Burette: 2/10000

Mechanical Unit Resolution 1/10000
Charging speed (55±10) s (Full burette)
Measuring Unit Range (-1800.0~1800.0) mv, (0.00~14.00)pH
Resolutions 0.1mV, 0.01pH
Accuracy pH: ±0.01pH mv: ±0.03%FS
Fluctuation (±0.3mV±1bit) /3h
Temp. Compensation Range (-5.0~105.0)  ℃
Resolutions 0.1 ℃
Accuracy ±0.3 ℃
General Power Supply AC (220±22) V; (50±1) Hz
Dimension (mm)& Weight (kg) 340*400*400; 10

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    Contact Info

    17th floor, Mingsheng Building, Xinluo Street, Jinan

    Phone: +86-531-88982330

    Fax: +86-531-88983691


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