IP 37: Determination of acidity and alkalinity of lubricating grease

Document options

EI Technical Partners get free access to publications. You will need to Login or Register here

  • Method adopted/last revised:
  • Method reapproved: 2020
  • Status: Current
  • First printed in STM books: 2004

This standard describes a method for the
determination of free acid, free alkali and insoluble
carbonates in calcium, sodium and lithium greases.
It is not suitable for use when soaps of lead, zinc,
aluminium or other weak bases are present, see
note 1. Certain additives such as sodium nitrite
NOTE 1 - The soaps of weak bases react with potassium
hydroxide and therefore the acidity of greases containing
these materials cannot be directly determined.

Members Benefits

Are you an EI Member? If yes, register/log in now to ensure you receive free access or discounts to EI publications.

If you are not a Member, why not join today and receive all of the benefits of EI Membership? EI Members are entitled to a 25% discount on most EI publications.