According to Minister of Environment and Forestry Regulation Number 29 of 2020, Polychlorinated Biphenyls (PCBs) are hazardous and toxic materials which are aromatic hydrocarbon compounds that are classified as organochlorines and are persistent. PCBs are used as additives to insulating oils in electrical equipment such as transformers. To identify PCBs in transformer oil or capacitors can be done with the Quick Test.

The rapid test is a kind of screening test to quickly obtain total chloride compound information of transformer oil by using a portable device. We use the potentiometric method where the screening test tool has a special electrode that is specific for measuring total chloride in the sample, and the concentration analysis results obtained are about 3 times greater than laboratory test results because the rapid test results are in the form of total chloride ion values, so all compounds in the sample containing chloride ions will also read the concentration. The cost of rapid test analysis is cheaper than laboratory tests because the sample does not go through a preparation process so that the analysis process is faster. However, if the sample contains water, the concentration results obtained will be inaccurate and it is advisable not to use it for analysis.

If the results of the rapid test show that the concentration of PCBs is more than 50 ppm, then the sample should be analyzed using a laboratory test to obtain a more accurate concentration value.