- Clean the sample ultrasonically with acetone/ethanol as medium
- Clean the syringe and fill it with the required liquid with which the test is to be conducted
- Place the sample on the sample stage
- Turn - on the Illumination lamp and CCD camera
- Make sure the sample stage is properly labeled
- Open the syringe knob to allow a liquid drop to come out and let it fall on the sample.Drop acquires the shape
- Click on the software which measures the contact angle at both the ends (θC1 and θC2)
- Repeat the experiment at least 5 times at different positions of the sample
- Take the arithmetic mean of the θC1 and θC2 to obtain the contact angle
