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Small and simple yet pecise.


The robust SITA DynoTester+ is the hand-held tensiometer for fast laboratory measurements for simple control of cleaner or surfactant concentration in cleaning, rinsing or electroplating baths. It directly shows the measuring results on a comfortable display and alerts the user if defined limit values are exceeded.

The SITA DynoTester+ is small, light and with staying power and a battery to last at least 10 operating hours.
25 measuring profiles.

Userfriendly operating concept.
Intuitive operation.
Regulates the surface age (bubble lifetime) automatically.

The measuring values can be compared directly with values of other SITA laboratory tensiometers. Adjustable high dynamic bubble lifetime range: 15 ms…20.000 ms.


SITA DynoTester+ brochure


The SITA DynoTester+ is a robust and easy to handle tensiometer for measuring the process parameter surface tension. Because of a clear operating concept and the possibility to preset the bubble lifetime maloperation as well as measuring deviations are highly unusual. Thus, the mobile device is especially suitable for atline routine measurements in cleaning or electroplating processes.

The tensiometer measures the dynamic surface tension of liquids using the bubble pressure method. The bubble lifetime will be set and controlled automatically by the DynoTester+, no drift and readjustmets by the user required. Basic knowledge about surface tension and the operating of the device is not necessary.

The measuring data can be stored within the device or transferred to a computer. Measurement parameters can be regulated by the user to prevent unwanted adjustments. This can be done by using the Windows-Software SITA ProcessLog.


Feature Benefits of the SITA DynoTester+:

  • easy to use, intuitive operation
  • Regulates surface age (bubble lifetime) automatically - no drift and readjustments required
  • Preset parameters reliably prevent measuring deviations through incorrect use
  • Direct storing of measuring values
  • Measuring values can be compared with all SITA tensiometer



    The SITA DynoTester+ is easpecially used in the following applications:

    • Monitoring the surfactant concentration of a cleaner (Industrial parts cleaning)
    • Monitoring the wetting characteristics in nickel baths (Electroplating industry)
    • Controlling the wetting characteristics of etchant solutions and developers (Semi-Conductor Technology)
    • Controlling the IPA-concentration in texturing baths (Photovoltaics)

    Application information for the SITA DynoTester+

    • Process reliability in electroplating industry by simple and fast determination of the wetting agent concentration
    • Simple monitoring of the water quality during wafer cutting
    • Reliable monitoring of the IPA-concentration in caustic solutions of the solar cell production

    For your security our application engineers advise you, if the DynoTester+ is suitable to your application. Furthermore, we test your samples and develop an appropriate controlling procedure according to your processes.

    Result: The DynoTester+ optimally supports R&D as well as quality control in the laboratory.

    Here you can find further application examples.

    Measuring principle

    Like all SITA tensiometer, the SITA pro line t15 is based on the bubble pressure method for measuring the dynamic surface tension of liquids.

    The principle of the bubble pressure method is, that an air stream is lead through a capillary into the process liquid. A sensor measures the pressure which is needed to generate a bubble (mehr...).


    The Windows-Software SITA-ProcessLog allows easy control of all functions of the tensiometer with the PC as well as a comfortable management of the saved measuring data.



    Management and graphical analysis of saved measuring data
    Simple and easy preparation of measuring reports
    Controlling the measurement via PC in the laboratory
    Simple generation of concentration curves based on defined samples

    For more information click here.

    Technical data

    Surface tension
    Measuring range 10…100 mN/m (dyn/cm)
    Resolution 0.1 mN/m (dyn/cm)
    Bubble lifetime
    Adjustable range 15…20,000 ms
    Resolution 1 ms
    Sample temperature
    Measuring range 0…100 °C
    Resolution 0.1 K
    Power Supply
    Mains adapter 100 - 240 V
    47 - 63 Hz
    Battery (Lion, integrated)

    3.6 V/1,950 mAh
    min. 10 h operating hours

    Power consumption 2 W max.
    Interface, Storage, Dimensions, Weight
    USB interface data transfer, battery charging
    Display 124 x 168 pixel,
    Storage 25 values/profile
    Dimensions (WxHxD) 75 x 168 x 35 in mm
    Weight of instrument 230 g

    Scope of delivery

    - Measuring deviceDynoTester+
    - Robust suitcase
    - Power supply, USB cable
    - Stand, instrument fastener
    - 2 sample vessels 50 ml
    - 2 Capillaries PEEK according to application
    - Operating instruction
    - Calibration certificate



    Type I PEEK

    easy manual cleaning for paints and varnishes

    Type II PEEK

    for monitoring process liquids

    Type III Glass

    for agressive liquids

    Disposal capillaries PTFE

    for special cases

    Device protection

    Acid protection kit

    PE jacket for sensor head or device, borosilicate glass protection for temperature probe, glass cover

    Sample handling

    Sample vessels 50 ml

    Mini sample vessels - 5 ml

    for measuring very small sample volumes

    Double walled glass vessel

    for use with thermal liquid circulator (thermostat) including special cover and insulation

    Laboratory devices

    Heating plate with magnetic stirrer and stand for SITA DynoTester+



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      A business unit of SITA Messtechnik GmbH.

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