Penetrant testing (PT)

Penetrant testing is performed with a coloured fluid or fluorescent dye (under UV light), also at elevated temperatures.
Penetrant testing is a method of surface inspection which can be performed on alloy and non-alloy steels, steel castings, cast iron, aluminium, copper, nickel, titanium, plastics and other materials. Penetrant testing takes advantage of the phenomenon of capillarity, which involves the penetration of a liquid (penetrant) with a low surface tension into narrow spaces (discontinuities), and its pulling using an absorbent fluid (developing fluid) The penetrant testing method is used to detect such discontinuities as porosity, cracks, cold shutting, etc. Additionally, it can be used for tightness testing.
Authorisation range according to ASME
Applied regulationsExamined objects
ASME code:
• Section VIII Division 1
• Section VIII Division 2
Metallurgical products

Authorisation range
Applicable standards, procedures and instructionsExamination rangeExamined objects
PN-EN ISO 3452-1 “Non-destructive testing – Penetrant testing –
Part 1: General principles”
Surface discontinuities of welded jointsMetallurgical products
Welded joints
PN- ISO 10228-2 “Non-destructive testing of steel forgings–
Part 2: Penetrant testing”
Surface discontinuities of forgings
PN-EN 1371-1 “Founding – Liquid penetrant testing –
Part 1: Sand, gravity die and low pressure die castings”
Surface discontinuities of casts
PN-EN ISO 10893-4 “Non-destructive testing of steel tubes –
Part 4: Liquid penetrant inspection of seamless and welded steel tubes for the detection of surface imperfections”
Surface discontinuities of steel tubes

Non-Destructive Examination services

We provide professional advice in choosing the appropriate testing method

Our office staff is available from Monday to Friday 7.00 -15.00.
The testing personnel is available depending on the assignment.