Typical indications that can be detected with the penetrant testing are:

Cold cracks
Hot cracks
Grinding cracks
Gas pores and clustered porosities
Spongy texture
Stress corrosion cracking

Depending on which penetrant is used, a distinction is made between three methods according to EN ISO 3452 Part 2:

TYPE I Fluorescent Penetrant Testing
TYPE II Colour Contrast Penetrant Testing
TYPE III Fluorescent Colour Contrast Penetrant Testing

The basic standard for penetrant testing EN ISO 3452 Part 1 describes in detail how to perform penetrant testing with the various testing products systems.

Immediately after application of the developer, the test object surface is inspected according to the given inspection intervals. The required viewing conditions (see EN ISO 3059, ASTM E1417 or customer specification) are observed.

The test result and the test conditions are recorded by the NDT personnel in the test report. Depending on the test instruction or specification, documentation by fotos or video recordings are made.

Classification of penetration systems according to EN ISO 3452 Part 2

Testing products for penetrant testing are classified by

Type of penetrant
Method of excess penetrant removal
Form of development

(see EN ISO 3452-2 Table 1 above)

Fluorescent penetration systems are classified according to sensitivity levels starting with ½ (very low) to 4 (ultra-high sensitivity).

There are two sensitivity classes for color contrast penetration systems and fluorescent colour contrast penetration systems:

Sensitivity class 1	normal
Sensitivity class 2	highly sensitive

NORD-TEST

Showing 1 - 7 out of 7

Page 1 out of 1

NORD-TEST Reiniger U 87 Solvent-based (alcohol-based) Non-halogenated (class 2) Ecologically harmless Fast evaporating without residues	Clear	NORD-TEST Reiniger U 87 quantity	Auf Merkliste setzen	121.300.101
NORD-TEST Kontrastrot U 88 NORD-TEST Kontrastrot U 88 is a red penetrant for colour contrast penetrant testing TYPE II class 2 Highly sensitive Dark red Good wettability Easily washable Slight odour METHOD of excess penetrant removal A Water C Solvent E Water and solvent	Clear	NORD-TEST Kontrastrot U 88 quantity	Auf Merkliste setzen	121.300.201
NORD-TEST Entwickler U 89 NORD-TEST Entwickler U 89 is a white developer Very fine grained Alcohol base Forms homogeneous layers Short drying time FORM e Solvent-based	Clear	NORD-TEST Entwickler U 89 quantity	Auf Merkliste setzen	121.300.701
NORD-TEST ROT 3000 NORD-TEST Rot 3000 is a red fluorescent penetrant TYPE III class 2 Red fluorescent under UV light Highly sensitive AZO-free Biodegradable Slight odour Very good washability METHOD of excess penetrant removal A Water C Solvent E Water and solvent	Clear	NORD-TEST ROT 3000 quantity	Auf Merkliste setzen	121.300.301
NORD-TEST Set 1 set consists of:		NORD-TEST Set quantity	Auf Merkliste setzen	121.300.750
NORD-TEST Penetrant FP 90 Blau N NORD-TEST Penetrant FP 90 Blau N is a blue fluorescent penetrant TYPE I class 2 Highly sensitive Intrinsic colour transparent Free of labeling	Clear	NORD-TEST Penetrant FP 90 Blau N quantity	Auf Merkliste setzen	122.500.125
NORD-TEST Food Penetrant Food-safe colour contrast penetrant TYPE III - corresponds to class 2 Highly sensitive Contains ingredients approved for food industry Harmless from a human toxicological point of view Also suitable for conventional industrial use METHOD of excess penetrant removal C Solvent	Clear	NORD-TEST Food Penetrant quantity	Auf Merkliste setzen	124.000.102

Standard-Chek

Showing 1 - 4 out of 4

Page 1 out of 1

Standard-Chek Reiniger Nr. 1 Remover for the penetrant testing system Standard-Chek Solvent-based Quickly evaporating No residues	Clear	Standard-Chek Reiniger Nr. 1 quantity	Auf Merkliste setzen	121.200.101
Standard-Chek Kontrastrot Nr. 2 Standard-Chek Kontrastrot Nr. 2 is a red penetrant of high contrast for colour contrast penetrant testing Type II class 2 Highly sensitive Universally applicable METHOD of excess penetrant removal A Water C Solvent E Water and solvent	Clear	Standard-Chek Kontrastrot Nr. 2 quantity	Auf Merkliste setzen	121.200.201
Standard-Chek Entwickler Nr. 3 Standard-Chek Entwickler Nr. 3 is a white developer for penetrant testing Fine-grained Forms homogeneous layers Short drying time FORM e Wet developer solvent-based	Clear	Standard-Chek Entwickler Nr. 3 quantity	Auf Merkliste setzen	121.200.501
Standard-Chek Rot 2003 Red fluorescent penetrant for fluorescent colour contrast penetrant testing Type III class 2 Red fluorescent under UV light Highly sensitive AZO-free Very well washable Slight odour METHOD of excess penetrant removal A Water C Solvent E Water and solvent	Clear	Standard-Chek Rot 2003 quantity	Auf Merkliste setzen	121.200.301

MET-L-CHEK Penetrant

Showing 1 - 17 out of 17

Page 1 out of 1

MET-L-CHEK Penetrant Dye VP-30 ***** Qualified according to AMS 2644E and QPL-2644 listed TYPE II class 2 Highly sensitive Red Universally applicable METHOD** of excess penetrant removal A Water C Solvent	Clear	MET-L-CHEK Penetrant Dye VP-30 quantity	Auf Merkliste setzen	121.100.201
MET-L-CHEK Rot 1001 * Corresponds to AMS 2644E Type III Class 2 Highly sensitive Red fluorescent AZO-free Universally applicable METHOD of excess penetrant removal A Water C Solvent	Clear	MET-L-CHEK Rot 1001 quantity	Auf Merkliste setzen	121.100.301
MET-L-CHEK Penetrant VBP 300 ***** Qualified according to AMS 2644E and QPL-2644 listed TYPE II class 2 Highly sensitive Biodegradable Free from oils and solvents METHOD** of excess penetrant removal A Water C Solvent	Clear	MET-L-CHEK Penetrant VBP 300 quantity	Auf Merkliste setzen	121.100.222
MET-L-CHEK Penetrant VP 302 ***** Qualified according to AMS 2644E and QPL-2644 listed TYPE II class 2 Highly sensitive Temperature range +52 °C to +177 °C METHOD** of excess penetrant removal C Solvent	Clear	MET-L-CHEK Penetrant VP 302 quantity	Auf Merkliste setzen	123.200.203
MET-L-CHEK Penetrant FP-90 MET-L-CHEK Penetrant FP-90 is a water-washable fluorescent penetrant. TYPE I Level 1/2 Fluorescent Very low sensitivity Very reasonably priced For universal application in metal processing METHOD of excess penetrant removal A Water C Solvent	Clear	MET-L-CHEK Penetrant FP-90 quantity	Auf Merkliste setzen	122.101.102
MET-L-CHEK Penetrant FP 91 MET-L-CHEK Penetrant FP 91 is a water washable fluorescent penetrant. TYPE I Level 1/2 Fluorescent Water washable Very low sensitivity Very reasonably priced For universal application in metal processing METHOD of excess penetrant removal A Water C Solvent	Clear	MET-L-CHEK Penetrant FP 91 quantity	Auf Merkliste setzen	122.101.162
MET-L-CHEK Penetrant FP 91 B MET-L-CHEK Penetrant FP 91 B is a water-washable fluorescent penetrant TYPE I Level 1/2 Fluorescent Water washable Very low sensitivity Very reasonably priced For universal application in metalworking METHOD of excess penetrant removal A Water C Solvent	Clear	MET-L-CHEK Penetrant FP 91 B quantity	Auf Merkliste setzen	122.101.502
MET-L-CHEK Penetrant FBP 911 ******* Qualified according to AMS 2644E and QPL-2644 listed	Clear	MET-L-CHEK Penetrant FBP 911 quantity	Auf Merkliste setzen	122.101.602
MET-L-CHEK Penetrant FP 921 ***** Qualified according to AMS 2644E and QPL-2644 listed Water-washable fluorescent penetrant TYPE I Level 1 Fluorescent Low sensitivity Use in general metalworking Approved for aerospace applications METHOD** of excess penetrant removal A Water C Solvent	Clear	MET-L-CHEK Penetrant FP 921 quantity	Auf Merkliste setzen	122.101.612
MET-L-CHEK Penetrant FBP 912 ***** Qualified according to AMS 2644E and QPL-2644 listed MET-L-CHEK Penetrant FBP 912 is a water-washable fluorescent penetrant TYPE I Level 2+ Fluorescent Medium sensitivity Biodegradable Can also be easily washed off rough surfaces Low in sulphur and halogen VOC-free Free from heavy metals, greases, oils and lubricants METHOD** of excess penetrant removal A Water C Solvent	Clear	MET-L-CHEK Penetrant FBP 912 quantity	Auf Merkliste setzen	122.101.902
MET-L-CHEK Penetrant FP 922 ***** Qualified according to AMS 2644E and QPL-2644 listed Water-washable fluorescent penetrant TYPE I Level 2+ Fluorescent Medium sensitivity Wide range of applications for demanding applications in aviation or in test laboratories METHOD** of excess penetrant removal A Water C Solvent	Clear	MET-L-CHEK Penetrant FP 922 quantity	Auf Merkliste setzen	122.102.602
MET-L-CHEK Penetrant FBP 913 ***** Qualified according to AMS 2644E and QPL-2644 listed MET-L-CHEK Penetrant FBP 913 is a water-washable fluorescent penetrant TYPE I Level 3+ Fluorescent High sensitivity Biodegradable Can also be easily washed off rough surfaces Low in sulphur and halogen VOC-free Free from heavy metals, greases, oils and lubricants METHOD** of excess penetrant removal A Water C Solvent	Clear	MET-L-CHEK Penetrant FBP 913 quantity	Auf Merkliste setzen	122.101.142
MET-L-CHEK Penetrant FP-923 ***** Qualified according to AMS 2644E and QPL-2644 listed Water-washable fluorescent penetrant TYPE I Level 3+ Fluorescent High sensitivity Wide range of application Also approved for aviation METHOD** of excess penetrant removal A Water C Solvent	Clear	MET-L-CHEK Penetrant FP-923 quantity	Auf Merkliste setzen	122.102.621
MET-L-CHEK Penetrant FBP 914 ***** Qualified according to AMS 2644E and QPL-2644 listed MET-L-CHEK Penetrant FBP 914 is a water-washable fluorescent penetrant TYPE I Level 4 Fluorescent Ultra-high sensitivity Highest brightness Biodegradable Can also be easily washed off rough surfaces Low in sulphur and halogen VOC-free For critical testing applications METHOD** of excess penetrant removal A Water C Solvent	Clear	MET-L-CHEK Penetrant FBP 914 quantity	Auf Merkliste setzen	122.101.152
MET-L-CHEK Penetrant FP 93 A (M) ***** Qualified according to AMS 2644E and QPL-2644 listed Post-emulsifiable fluorescent penetrant TYPE I** Level 2 Fluorescent Medium sensitivity	Clear	MET-L-CHEK Penetrant FP 93 A (M) quantity	Auf Merkliste setzen	122.102.302
MET-L-CHEK Penetrant FP 95 A (M) ***** Qualified according to AMS 2644E and QPL-2644 listed Post-emulsifiable fluorescent penetrant TYPE I** Level 3 Fluorescent High sensitivity	Clear	MET-L-CHEK Penetrant FP 95 A (M) quantity	Auf Merkliste setzen	122.101.401
MET-L-CHEK Penetrant FP 97 A (M) ***** Qualified according to AMS 2644E and QPL-2644 listed Post-emulsifiable fluorescent penetrant TYPE I** Level 4 Ultra-high sensitivity	Clear	MET-L-CHEK Penetrant FP 97 A (M) quantity	Auf Merkliste setzen	122.102.502

MET-L-CHEK Developer

Showing 1 - 5 out of 5

Page 1 out of 1

MET-L-CHEK Developer D70

*** Qualified according to AMS 2644E and QPL-2644 listed

Solvent-based, non-aqueous (alcohol-based)
Highest sensitivity
Quick drying
Forms a homogeneous white layer

FORM

d	Solvent-based wet developer
	non-aqueous for Type I

e	Water- and solvent-based wet developers
	non-aqueous for Type II and Type III

Auf Merkliste setzen

121.100.501

MET-L-CHEK Developer D702

MET-L-CHEK Developer D702 is a developer for high temperatures from +52 °C to +177 °C

FORM

f for special purpose

Auf Merkliste setzen

123.200.403

MET-L-CHEK Developer D 78 B

*** Qualified according to AMS 2644E and QPL-2644 listed

Dry powder
Suspension through preparation with water
Uniform consistency due to constant stirring

FORM

c Water-based wet developer, suspended

Auf Merkliste setzen

122.120.406

MET-L-CHEK Developer D 72 A

*** Qualified according to AMS 2644E and QPL-2644 listed

MET-L-CHEK Developer D 72 A is a dry developer for fluorescent penetrant testing.

Suitable for

Application in dust chambers
Electrostatic sputtering
Dusting by hand

FORM

a Dry developer

Auf Merkliste setzen

122.120.306

MET-L-CHEK Developer D 76 B

*** Qualified according to AMS 2644E and QPL-2644 listed

MET-L-CHEK Developer D 76 B is a water-soluble developer for post-emulsifiable fluorescent penetrants.

Dry powder water-soluble
Application in ultra-thin, even, translucent layers
After dissolving the powder, stirring is no longer necessary
DO NOT use with water washable penetrants!

FORM

b Wet developer water solulable

Auf Merkliste setzen

121.100.606

MET-L-CHEK Remover

Showing 1 - 5 out of 5

Page 1 out of 1

MET-L-CHEK Spezialreiniger NPU * Meets the requirements of AMS 2644E Class 2, non-halogenated Solvent-based	Clear	MET-L-CHEK Spezialreiniger NPU quantity	Auf Merkliste setzen	121.100.101
MET-L-CHEK Remover E 59 A ******* Qualified according to AMS 2644E and QPL-2644 listed Petroleum-based Class 2, non-halogenated Universally applicable	Clear	MET-L-CHEK Remover E 59 A quantity	Auf Merkliste setzen	122.113.101
MET-L-CHEK Reiniger R 502 Special remover MET-L-CHEK Reiniger R 502 for temperatures from +52 °C to +177 °C Class 3 (for special purposes)	Clear	MET-L-CHEK Reiniger R 502 quantity	Auf Merkliste setzen	123.200.103
MET-L-CHEK Remover R-503 ******* Qualified according to AMS 2644E and QPL-2644 listed Class 2, non-halogenated Solvent-based Universally applicable Well suited for the storage of test bodies	Clear	MET-L-CHEK Remover R-503 quantity	Auf Merkliste setzen	122.113.112
MET-L-CHEK R-504 Spray MET-L-CHEK Cleaner & Remover R-504 Spray ******* Qualified according to AMS 2644E and QPL-2644 listed Solvent-based Class 2, non-halogenated Phenol-free	Clear	MET-L-CHEK R-504 Spray quantity	Auf Merkliste setzen	112.113.121

MET-L-CHEK Emulsifier

Showing 1 - 1 out of 1

Page 1 out of 1

MET-L-CHEK Emulgator E 58 D

*** Qualified according to AMS 2644E and QPL-2644 listed

MET-L-CHEK Emulsifier E 58 D is a hydrophilic emulsifier concentrate

High sensitivity
Concentrate

Dilution

Immersion bath:
Dilution with water 1 : 20
Spray on:
Dilution to less than 5 %

METHOD

D Hydrophilic emulsifier

Auf Merkliste setzen

122.112.202

Reference blocks and test bodies

Showing 1 - 10 out of 10

Page 1 out of 1

Reference test block 1 according to EN ISO 3452-3* Scope of delivery Reference test block 1 Certificate		Reference test block 1 quantity	Auf Merkliste setzen	127.400.001
Reference test block 2 according to EN ISO 3452-3* Scope of delivery Reference test block 2 Certificate	Clear	Reference test block 2 quantity	Auf Merkliste setzen	127.550.000
Reference test block NR-5 (PSM-5) HELLING reference test block	Clear	Reference test block NR-5 (PSM-5) quantity	Auf Merkliste setzen	127.800.010
Reference test block according to ASME V Aluminum test block acc. to ASME V* EN ISO 3452-5* EN ISO 3452-6*	Clear	Reference test block according to ASME V quantity	Auf Merkliste setzen	127.100.000
Reference test block according to JIS Z 2343 Determination of the sensitivity levels of penetrant systems	Clear	Reference test block according to JIS Z 2343 quantity	Auf Merkliste setzen	127.700.000
Washing test panel WTP-1 Evaluation of washability of fluorescent penetrants acc. to ASTM E1417/E1416M and AMS 2644H.		Washing test panel WTP-1 quantity	Auf Merkliste setzen	127.700.001
Washing test panel WTP-2 Evaluation of the water washability of fluorescent penetrants.		Washing test panel WTP-2 quantity	Auf Merkliste setzen	127.700.002
Test body UTE-3 Test scale and visual comparator		Test body UTE-3 quantity	Auf Merkliste setzen	127.850.000
Comparator black Precise sizing	Clear	Comparator black quantity	Auf Merkliste setzen	128.200.001
Comparator green fluorescent Precise determination of the size of indication of fluorescent magnetic particle testing	Clear	Comparator green fluorescent quantity	Auf Merkliste setzen	128.200.102

PT test kit

Showing 1 - 1 out of 1

Page 1 out of 1

Test kit for Penetrant Testing

Test kit for colour contrast penetrant testing

CONTENT

1 x NORD-TEST Kontrastrot U 88 Spray (red penetrant, 1 x 500 mL)

2 x NORD-TEST U87 remover (500 mL each)

3 x NORD-TEST U89 developer (500 mL each)

1 x MET-L-CHEK FP 93 A(M) penetrant (250 ml)

2 x MET-L-CHEK NPU remover (400 mL each)

3 x MET-L-CHEK D70 developer (400 mL each)

1 reference block according to ASME

1 UV LED lamp, type UV Inspector 2020

1 white light LED pocket lamp

1 pair of protective gloves

1 wire brush

1 box cleaning wipes

Auf Merkliste setzen

121.500.100

HELLING test facilities for penetrant testing are individually manufactured according to the customer's specification. The facilities are mainly made of stainless steel. The control systems are produced by well-known manufacturers.

A test facility is composed of the following process stations:

Pre-cleaning
Washing
Draying → temperature up to 100 °C
Cooling → temperature up to 40 °C
Application of the penetrant
Washing
Emulsifying
Re-washing
Drying → temperature 60 °C
Application of the developer
Inspection

The equipment meets the requirements of the following regulations:

DIN EN ISO 3452-1
SAE AMS 2644
MIL-STD-6866
MIL-I-25135E (replaced by SAE AMS 2644)
European technical regulations regarding occupational health, operational safety and ergonomics are complied with.If you would like to discuss your specification with us, please send us your request via the watch list or by e-mail to!

We would also be happy to guide you through our NDT exhibition in Hamburg and advise you on your testing problem! Mehr Informationen ...