The furol's standard solution diluent used in detecting furol content in transformer oil by adopting highly effective liquid-phase chromatographic method has remarkable influence upon the result of analysis.In order to screen out the standard solution diluent of furol

four kinds of diluents

namely new basic oil(not processed)

new transformer oil no.45

new transformer oil no.25

and pure methanol

have been tested.Results of test show that the influence of using new transformer oil no.45 as standard solution diluent of furol has the smallest effect upon the result of furol analysis

the detected result has high accuracy

and good repeatability

and good linearity in a range of 0~10.00 mg/L.Taking new transformer oil no.45 as standard solutaion diluent of furol

the furol content in oilsamples for nearly 30 transformers has been analysed by adopting the highly effective liquid-phase chromato graphic method

the results of analysis fully tally with the requirements specified in the 《Guidance for judging the insulation aging of oil-inmersed transformers》.