i-pH

Measuring Lubricant Lifetime: Are Current Measures Telling the Whole Story?

March 13, 2023

While TAN and TBN are still prevalent measurement tools when it comes to measuring lubricant acidification, have they become less relevant as fuel and engine technology have evolved?

Why use i-pH?

December 14, 2020

We have two methods for measuring the build-up of acids in an engine lubricant during service: TAN and i-pH. Why use i-pH?

What is i-pH?

December 09, 2020

Learn about i-pH including how it's measured and how to interpret it.

What is pH?

November 17, 2020

Learn about the pH scale, the chemistry of acids and how pH is measured.

What are TAN and TBN?

October 22, 2020

Vehicle users across the world currently use total acid number (TAN) and total base number (TBN) as methods to monitor the condition of the lubricant in their engines. What do these figures mean?