Standards

Q: What does ASTM D2272 measure?

D2272 reports an oxidation induction time from the rotating pressure vessel test.

Q: Does ASTM D2272 set the 25% remaining-life rule?

No. The 25% of new-oil RPVOT remaining guidance is an ASTM D4378 monitoring rule, not a D2272 output.

ASTM D2272 Oxidation Stability (RPVOT)

ASTM D2272 is the rotating pressure vessel oxidation test (RPVOT) for steam turbine oils. The method estimates oxidation stability of new and in-service oils that share the same composition. The reported value is an induction time, not a remaining-life percentage and not a condemn limit.

That last point matters for oil-condition programs. A common turbine-oil rule — replace or reclaim when RPVOT falls to about 25% of the new-oil value — comes from ASTM D4378, the in-service mineral turbine-oil practice. D2272 only supplies the minutes. It is also not a substitute for ASTM D943, and it is not intended to compare unused oils of different formulations.

This page is original prose and is not a reproduction of the standard. Buy the official text from the ASTM store.

ASTM Standard at a Glance

Property	Value
ASTM Standard	ASTM D2272
Type	Test method
Measures	Oxidation induction time (RPVOT)
Applicable samples	New and in-service steam turbine oils of the same composition
Related standards	ASTM D4378
Recommended equipment	Oxidation Stability Analyzer

Choosing the right equipment for ASTM D2272

RPVOT scatter usually comes from vessel charge, catalyst condition, bath temperature, and how the endpoint is read. A dedicated oxidation-stability instrument keeps those knobs repeatable.

The Vero Scientific oxidation stability analyzer is the instrument linked to this method. Pair the result with ASTM D4378 when you are setting turbine-oil condemn limits — D2272 will not invent those limits for you.

Frequently Asked Questions

What does ASTM D2272 measure?

D2272 reports an induction time: how long the charged vessel holds pressure before the oil takes up oxygen and pressure drops. Longer time generally means more remaining oxidation reserve for oils of the same composition.

What does RPVOT mean?

RPVOT is the common name for this rotating pressure vessel oxidation test. The vessel is charged with oxygen, the oil is heated with water and a copper catalyst, and the clock runs until a set pressure drop.

Does ASTM D2272 set the 25% remaining-life rule?

No. D2272 outputs a time. The widely cited “about 25% of new-oil RPVOT remaining” condemn guidance lives in ASTM D4378 for mineral turbine oils — not in D2272 itself.

Is ASTM D2272 a substitute for ASTM D943?

No. D2272 is a relatively short oxidation test used for batch control and in-service remaining life on oils of the same composition. D943 is a different, much longer oxidation test. The method is not meant to rank new oils of different chemistries against each other.

Does Vero Scientific provide equipment for ASTM D2272?

Yes. The oxidation stability analyzer is the Vero Scientific instrument for this RPVOT workflow.