Intermolecular Forces formed liquid surface tension.Numbers of tension  reflect on liquid sample’s physics and chemical properties, it is one of the most important index to product quality. 

automatic oil interfacial tension tester

I.Matters needing attention

1. Working environment:

The temperature of the test environment should be kept constant. Do not place the instrument in an environment with high humidity and corrosive gases.

2. Platinum ring:

The plane of the ring should be parallel to the page on the north side, and the ring should have a certain roundness. The platinum ring should be clean, and it can be cleaned with detergent, and then rinsed with pure water, and then the platinum wire is heated in the oxidation flame of the alcohol lamp to orange-red.

3. Test cup: 　

The test cup should be clean, and it can be cleaned and washed, then rinsed with hot water, and finally rinsed with pure water, and drained before use.

4. Obtaining pure water:

It is best to use distilled water that has been purified multiple times. Tests have shown that some commercially available purified drinking water can meet the experimental requirements.

5. Calibration of the instrument:

After the instrument is subjected to a large impact, or after moving, the weight in the setting items should be calibrated.

II.Fault check and treatment