Important notice: Website update - 28th of January 2025
We're merging our website with our main site to offer a more streamlined experience. To make the switch smooth, this website undergoing maintenance and will be unavailable on the 28th of January 2025. This means you won't be able to purchase publications. Don't worry, everything will be available on the new site by the end of the day. To avoid any hiccups, we recommend holding off on purchases until then. Thank you for your patience, and see you on the new site soon!
IP 37: Determination of acidity and alkalinity of lubricating grease
- Method adopted/last revised:
- Method reapproved: 2020
- REF/ISBN:
- 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
interfere.
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.