TS EN ISO 12706

TS EN ISO 12706 is a vocabulary standard for non-destructive testing, focused on the technical terms and definitions used in penetrant testing. Penetrant testing is a widely used surface examination method for revealing discontinuities open to the surface, and the main value of this standard lies in making that terminology consistent and unambiguous.

Why penetrant testing vocabulary matters

As a vocabulary document, this standard helps ensure that the same technical terms are used with the same meaning across procedures, training, reports and procurement documents. In general technical terms, penetrant testing combines a penetrant, a cleaning/removal step and a developer to make surface-breaking defects such as cracks or porosity visible. Clear terminology is essential because small wording differences can change how a method is understood and applied.

What this document covers

• It covers technical terms related to penetrant testing.
• Its emphasis is on terminology and definitions rather than on prescribing a test procedure.
• It organises the naming used for penetrant testing within non-destructive testing vocabulary.
• It supports a common technical language for surface-breaking flaw assessment.

In general industry practice, penetrant testing is associated with surface integrity checks in areas such as welded fabrications and manufactured parts where open surface discontinuities matter. This standard supports that field by standardising the words used to describe the method and its concepts, rather than defining a specific product, acceptance limit or test regimen.