Dye penetrant testing｜Product Site

Test method
Features of testing
Flow of flaw detection
Flaw detection material lineup

Dye penetrant testing

Dye penetrant testing (Dye PT, DPT) is a method to find fine flaw openings on the surface of the test specimen by impregnating a red liquid into them to enlarge the flaw.
No inspection equipment is required, and testing is possible by the using the three following liquids. “Penetrant” “developing agent” and “cleaner/remover”.

View a well-informed course

Materials covered in the testing

Metallic and non-metallic material

Products used

Flaw detection material

Features of testing

feature

Flaw detection is possible even for metallic and non-metallic materials if they are not affected by flaw detection materials and have no hygroscopic property

feature

It is easy to apply even to complicated test specimens as flaw detection materials are liquid

feature

It is possible to conduct the testing regardless of indoor or outdoor if it is a bright area

feature

No equipment is required, and testing is possible by the using the three following liquids. “Penetrant” “developing agent” and “cleaner/remover”. (Removing solvents)

Flow of flaw detection

The dye penetrant testing is generally conducted by the following procedure.

①Pretreatment

②Penetration treatment

③Penetration treatment

④Development

⑤Examination

Flaw detection material lineup

You can choose from the following three types of products for use in dye penetrant testing depending on the application and material.

Standard type
Low halogen and low sulfurtype
Non-dangerous goods type

Method (Cleaning method)	Name of combination products	Compatible with JIS	Features
Method C Removal of solvent	Penetrant Super Check UP-ST(J)	✓	Standard type suitable for detecting flaws on any ferrous and nonferrous metals. Optimum for partial examination on a large structure or weld, because no special equipment is required. UR-ST·M: Safer type with higher flashing point UD-ST·V: Ultra quick-drying type suitable for low temperature and high humidity
	Cleaner/Remover Super Check UR-ST	✓
	Cleaner/Remover Super Check UR-ST・M
	Developing agent Super Check UD-ST	✓
	Developing agent Super Check UD-ST・V	✓
Method A Water washing	Developing agent Super Check P-GⅢ（EXP)		Water washable penetrant suitable for detecting flaws on nonferrous metal materials, ceramics, and large test pieces.
	Developing agent Super Check UD-ST	✓
	Penetrant Super Check P-GⅢ-NII		Water washable penetrant suitable for detecting flaws on slabs, large test pieces, and small mass-produced test pieces. Applicable to testing components with complex shapes.
	Developing agent Super Check UD-ST	✓
	Developing agent Super Check UD-ST・V	✓
Method C Removal of solvent	Penetrant Eco Check EP-ST(J)	✓	Standard-type ecological penetrant suitable for detecting flaws on any materials such as metallic and non-metallic materials.
	Cleaner/Remover Eco Check ER-ST	✓
	Developing agent Eco Check ED-ST	✓
Method A Water washing	Penetrant Eco Check EP-W(J)	✓	Ecological-type water washable penetrant made from natural materials and cosmetic materials, friendly to living things and the environment
Method A Water washing	Developing agent Eco Check ED-ST	✓

Method (Cleaning method)	Name of combination products	Compatible with JIS	Compliance with ASME	Features
Method C Removal of solvent	Penetrant Super Check UP-T(J)	✓	✓	Low halogen and low sulfur penetrant suitable for detecting flaws on stainless steel, titanium alloys, and nickel alloys. UR-T·M: Safer type with higher flashing point UD-T·V: Ultra quick-drying type suitable for low temperature and high humidity
	Cleaner/Remover Super Check UR-T	✓	✓
	Cleaner/Remover Super Check UR-T・M	✓	✓
	Developing agent Super Check UD-T	✓	✓
	Developing agent Super Check UD-T・V	✓	✓
Method A Water washing	Penetrant Super Check UP-GⅢ・T（J）	✓	✓	Low halogen and low sulfur penetrant suitable for large objects made of stainless steel, titanium alloys, nickel alloys, or objects with a rough surface. AS-T: Water aerosol type
	Cleaner/Remover Super Check AS-T	✓	✓
	Developing agent Super Check UD-T	✓	✓
	Developing agent Super Check UD-T-V	✓	✓

Method C Removal of solvent	Penetrant Eco Check EP-T(J)	✓	✓	Low halogen and low sulfur penetrant suitable for detecting flaws on stainless steel, titanium alloys, and nickel alloys Ecological type friendly to living things and the environment ED-T·V: Ultra quick-drying type suitable for low temperature and high humidity
	Cleaner/Remover Eco Check ER-T	✓	✓
	Developing agent Eco Check ED-T	✓	✓
	Developing agent Eco Check ED-T-V	✓	✓

Method (Cleaning method)	Name of combination products	Compatible with JIS	Features
Method C Removal of solvent	Penetrant Super Check UP-NU-H	✓	Penetrant which is non-hazardous, not subject to the Fire Defense Law, and incombustible, and which removes solvent
	Cleaner/Remover Super Check UP-NU-H	✓
	Developing agent Super Check UP-NU-H	✓
Method A Water washing	Penetrant Super Check P-LK		Water washable and incombustible penetrant suitable for detecting flaws on slabs or large test pieces Applicable to testing components with complex shapes. D-LW, D-LW·K: Powder type to be used after being dispersed in water D-LW·N: A type that does not require density control because the powder is already dispersed in water
	Penetrant Super Check UP-GⅢ・W
	Developing agent Super Check D-LW
	Developing agent Super Check D-LW-K
	Developing agent Super Check D-LW-N

* This flaw detector can also be used in Method A: Water rinse. In this case, use AS-T as the cleaning agent/remover.

Product information for
Dye Penetrant Flaw Detection Material
can also be found in the catalog.

View Product Catalog

Product details

Dye Penetrant
Cleaner/Remover
Developer

Super Check

MARKTEC’s dye penetrant flaw detection material is popularly known as “Super Check.” We offer aerosol and canned products depending on the application and purpose.

Super Check

Dye Penetrant
Cleaner/Remover
Developer

Eco Check

Based on our original ecological concept, we pursue safety for humans and the environment, and use natural materials and cosmetic materials for this visible dye penetrant product.

Eco Check

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