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Standards

ASTM D6299 Instrument QC and Control Charts

ASTM D6299 is the practice for applying statistical quality assurance and control-charting techniques to an analytical measurement system. In a petroleum laboratory it answers a different question than an oil-condition program: is the instrument-and-method combination still in statistical control, or has the measurement system drifted?

Control charts on check standards, not customer samples, are the usual D6299 picture. The practice does not set condemn limits on in-service oil. Those limits belong to monitoring practices such as D4378 and D6224, and to the statistical alarm-limit guide D7720. Mixing the two is how laboratories ship false alarms.

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

PropertyValue
ASTM StandardASTM D6299
TypePractice
CoversStatistical QA and control charting of measurement systems
Does not coverIn-service oil condemn limits (see D4378, D6224, D7720)
Related softwareVeroOCM

Related software

This practice is cited by VeroOCM — it is not tied to a single bench instrument.

Where this practice shows up at Vero

D6299 is one of the four practices the OCM standards library cites. It is the QC logic around the instruments, not a fifteenth test method.

See VeroOCM for the platform that applies that logic to live bench results.

Frequently Asked Questions

What is ASTM D6299 used for?

D6299 is a practice for applying statistical quality assurance and control-chart techniques to an analytical measurement system. It tells you whether the instrument-and-method combination is in statistical control — not whether a customer’s oil is healthy.

What is a control chart in this context?

A control chart tracks check-standard or quality-control sample results over time. Limits come from the laboratory’s own precision, not from a product specification. A point outside the chart is a measurement-system alarm, not an oil-condition alarm.

Is ASTM D6299 the same as ASTM D7720?

No. D6299 is laboratory / instrument QC. ASTM D7720 is the guide for setting statistical alarm limits on in-service oil-analysis data. They cite related math and solve different jobs.

Does Vero Scientific implement ASTM D6299?

VeroOCM is the platform that cites D6299 for instrument quality control and control charting. There is no separate D6299 bench instrument.

Does a D6299 out-of-control point condemn the oil?

No. A failing control chart means the measurement system drifted or the check standard changed. Diagnose the bench before you rewrite oil-condition limits.