Digidrop MCAT

MCAT means : Modular Contact Angle Technology 

Specifications of the instrument

Contact angle accuracy: +/-0.1°

Reproductibility of the measure : +/-0,1° ( conditions are required)

Range of contact angles: 0 – 180°

Surface energy range: 0 – 1000 mN/m

Maximum frames recording speed: 50/60 images/s ( this is the STD value. Other speeds are available depending on the application)Zoom: x10 and x20

Substrate holder: 100mm x 100 mm

Syringes type supplied: Borosilicate glass and plastic

Needles type supplied: 10 different gages are supplied for different ST values, different Oil and different viscosity.

Standard maximum size of the sample:

Thickness: 130 mm - Depth : 150 mm - Length : from 150 mm up to infinite

if you get long samples the mobile arm will be placed behind the backlight

Other sizes of samples are available depending on application. Can be done specifically

Optional Humidity generator

Humidity generated range: 0% - 99%

Humidity analysed: 5% - 95%

Temperature sensor range: - 50°C – 500°C ( not with the same sensor)

Width of the instrument : STD 19 "

Power supply: 90V – 230V

Frequency: 50 Hz- 60 Hz

With this instrument you can measure:


Contact angle with a reproductibility of 0.1° on flat, curved and non-horizontal surfaces.

Surface Energy (resp. Surface Tension) of substrate (resp. liquid) to calculate polar or AB, dispersive or LW, monopolar acid and monopolar basic component

Solubility liquid/liquid, Solubility liquid/solid

Wetting envelop

Flux of absorption and flux of evaporation

Contact angle and surface energy at different level of humidities and control fo the saturation of the vapour

Degreasing efficiency of oil on soil or metals

Efficiency of surfactants

Wetting and dewetting efficiency from contact angle hysteresis

Evolution of the contact angle hysteresis versus speed of wetting and dewetting

Studies of the variations of the surface energy components vs the % of modification of the treatment 

The DGD-DX is a powerful modular and sturdy scientific instrument dedicated to surface chemistry studies.

Everything has been thought to make the study of the scientist easy without neglecting the cost of the space in a lab.

As shown on the photo, the humidity generator can be placed below the instrument as well as 19" rack computer. The Flat screen is hold with an arm above the instrument to save the space.

Two levels of software are available. The basic one for the beginner in this field and the Visiodrop for advanced user. In this version , you can check in dynamic the volume of the liquid at 0,1µl to be dispensed without the need to get an automatic syringe,you can have a software focus assistance and plenty of other advanced instrumental features in addition of the hi-grade of science for polymerists.

Moreover, the software is very easy to use

Different sizes and temperature controlled chambers are available depending on the application. The liquid inside of the syringe can be regulated in temperature too.

In case of the use with a humidity generator , the chamber will be small 50 mm x 70 mm to speed up the humidity equilibrium. The value of the humidity and temperature is displayed on the results table for a correlation between contact angle and humidity.

A manual Y-axis table is supplied with this chamber to move the sample forward and backward