RD-SDM02 – Contact Angle Measurement Instrument


The RD-SDM02® system is a single-dosing and imaging system used to measure the Contact Angle of any liquid dropped on any flat surface in sessile drop mode and to measure advancing and receding drops.

It is useful primarily in the characterization of the chemical adhesion of liquids on the sample surface, and the estimation of the quality of different surface treatments on the sample.

Main features of the system:

  • Single dosing system with one manual-dispense syringe.
  • Sample table with manual height adjustment.
  • Light source with manual-controlled light holder and diffuser for illumination intensity regulation.
  • Camera with 640 × 480 pixel resolution and digital zoom (up to 5x) for photos and video-recording.
  • Software for acquiring image (AMCAP) and measuring contact angle (ImageJ).


Technical Data

Measuring range 5-180°
Accuracy ±1°
Objective 5x digital zoom
Droplet size Adjustable, 2 μL minimum
Syringe capacity 2 mL
Camera Digital Microscope HD colour CMOS sensor
Light source 3W LED lamp
Sample table 110 x 90 mm (WxD)
Max. measurement area 75 x 75 mm (WxD)
Max. sample thickness 15 mm
Instrument dimension 440 x 160 x 170 mm (WxDxH)
Weight 2 Kg
Power supply AC 100-240V 50/60Hz
Working voltage 12V/3A