Hello,

DGA has become a standard in the electrical
maintenance industry and is considered to be the most important oil test for transformer oils in electrical apparatus.
We intend to equip our lab. with an Gas Chromatography, so first I want to know who produces it.
If someone can help me with the manufactures name or they website.

Also I have one more question:
Which is the large value permitted for the TAN in Transformer oil?

Until now, we use ≤0.01 mg KOH/gr for the new oil and ≤ 0.4 mg KOH/gr for use oils. It's that correct?

Thank you

Suggest you read article by Doble
www.practicingoilanalysis.com/article_detail.asp?articleid=457 - 43k
As regards TAN in the UK BS 5730 states 0.5%max mg KOH/gm along with other criteria for used transformer oil. (colour, odour,sediment,fibres,
interfacial tension,water and various electrical tests)

MR. Davies,
Thank you for your reply, I find the article more interesting.
By the way,I am looking for an gas chromatograf instrument, so someone can help me ?

hi aida . why dont you try agilent technologies?
the services are much better?