We are offering acidity testing kit.
new transformer oils contain practically no acids if properly refined. The acidity test measures the content of acids formed by oxidation. The oxidation products polymerize to form sludge which then precipitates out. Acids react with metals on the surfaces inside the tank and form metallic soaps, another form of sludge.
sludging has been found to begin when the acid number reaches or exceeds 0.3, and 0.3 is considered to be the normal service limit. New oil has an acid number of less than 0.05. The acid number (formerly referred to as neutralization number) equals the milligrams of koh (potassium hydroxide) required to neutralize the acid contained in 1 gram of oil. It is questionable whether oil that is deteriorated to the point where its acid number exceeds 0.5 can be put back into lasting good condition by reclamation.
it is almost certain that two or more reclamations, spaced 6 months to 1 year apart, would be necessary.
it is recommended that an upper limit of 0.3 be used to determine when oil should be reclaimed, as a single reclamation would most probably restore such an oil to very good condition. Oil showing an acid number of 0.15 or larger can be expected to show accelerated acid formation. Tests have been conducted which indicate the acidity is proportional to the amount of oxygen absorbed by the oil. It is estimated that 0.0015 m3/l of oxygen absorbed in oil will cause an acidity of about 0.4 mg of koh, which is the approximate acidity number at which sludging is assumed to start.

We are offering acidity testing kit.
new transformer oils contain practically no acids if properly refined. The acidity test measures the content of acids formed by oxidation. The oxidation products polymerize to form sludge which then precipitates out. Acids react with metals on the surfaces inside the tank and form metallic soaps, another form of sludge.
sludging has been found to begin when the acid number reaches or exceeds 0.3, and 0.3 is considered to be the normal service limit. New oil has an acid number of less than 0.05. The acid number (formerly referred to as neutralization number) equals the milligrams of koh (potassium hydroxide) required to neutralize the acid contained in 1 gram of oil. It is questionable whether oil that is deteriorated to the point where its acid number exceeds 0.5 can be put back into lasting good condition by reclamation.
it is almost certain that two or more reclamations, spaced 6 months to 1 year apart, would be necessary.
it is recommended that an upper limit of 0.3 be used to determine when oil should be reclaimed, as a single reclamation would most probably restore such an oil to very good condition. Oil showing an acid number of 0.15 or larger can be expected to show accelerated acid formation. Tests have been conducted which indicate the acidity is proportional to the amount of oxygen absorbed by the oil. It is estimated that 0.0015 m3/l of oxygen absorbed in oil will cause an acidity of about 0.4 mg of koh, which is the approximate acidity number at which sludging is assumed to start.