MR®67 ECOLINE Penetrant – Red & Fluorescent Solvent & Water Removable
MR®67ECOLINE Penetrant – Red & FluorescentSolvent & Water Removable
MR®67 is a solvent-free solvent & water removable, red & fluorescent colour penetrant. It exhibits outstanding best-in-class penetrating characteristics which provide maximum reliability in locating surface open flaws and discontinuities. Typical application include casting, forgings, leak testing, welds and general metal work.
| SKU | Pack Size | Case Size |
|---|---|---|
| 2511-0042 | Bulk 1L | 6 |
| 2511-0070 | Bulk 5L | – |
- Dark pink, clear indications under white light
- Bright orange, clear indications under UV light
- Over wash resistance
- Free of aromatics & oil; glycol based
- Superior reliability
- Excellent washability
- Free of aromatics & oil; glycol based
- Superior reliability
- NPE-free
- Phthalate-free
- Superior surface wetting
- No odour
- Outstanding penetrating capability
- Instant indications - high capillary action
- Easy to apply and easy to clean
- Non toxic
- Azo-free dye
- Biodegradable
- Eco-Line
- Suitable for confined area inspection
- Suitable for all metals (suitability for plastics & ceramics requires testing prior to use)
Additional information
| Properties | Appearance – dark pink liquid Chemical Composition – mixture of emulsifiers; surfactants and dye Basis – solvent-free; aqueous media Odour – nil |
| Approvals | ASME Code V; Art. 6 DIN EN ISO 3452 ASTM D516 ASTM E165 ASTM E1417 RCC-M ASME NPCIL |
| Recommended Usage | NDT Method – Dye Penetrant Testing Type – III Method – A / C / E Sensitivity – 2 Compatibility – MR70 Area Coverage ~ 23 sq m (1 L) Usage Temperature – 41°F to 131°F / +5 °C to +55 °C Storage Temperature – 41°F to 113°F / +5 °C to +45 °C |
| Reference Test Blocks | Reference test block type 1 (Ni-Cr panel – 20µm 30µm & 50µm) Reference test block type 2 (5-star panel) ASTM test block (Aluminium comparator block) |
How it Works
Penetrants in NDT work by taking advantage of the capillary action principle, which is the ability of a liquid to flow into narrow spaces without the assistance of, or even in opposition to, external forces like gravity.
The penetrant used in NDT is a liquid that is applied to the surface of the material being inspected and allowed to seep into surface-breaking defects, such as cracks or porosity. After a certain amount of time, the excess penetrant is wiped off the surface, leaving only the penetrant that has seeped into the defects. A developer is then applied to the surface, which draws the trapped penetrant out of the defects, making them visible to the naked eye. The developer also amplifies the penetrant's fluorescence, making the defects visible under UV light.
The penetrant works by using a combination of capillary action, surface tension, and viscosity to penetrate the surface-breaking defects. The penetrant liquid contains a dye or fluorescent material that allows the defects to be seen under white or UV light, respectively.
GHS Category
| Bulk | Aerosol |
|---|---|
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FAQs
Penetrant testing, also known as dye penetrant inspection, is a non-destructive testing (NDT) technique used to detect surface-breaking defects such as cracks, porosity, laps, and seams on the surface of solid materials.
Penetrant testing works by applying a liquid dye penetrant to the surface of a material. The penetrant flows into any surface defects and is allowed to soak for a specified time. Excess penetrant is then removed, and a developer is applied, which draws the penetrant out of the defects and makes them visible.
Penetrant testing is a relatively simple and cost-effective method for detecting surface defects on a wide range of materials. It can be used on a variety of surface geometries, including complex shapes, and is capable of detecting very small defects.
Penetrant testing is only capable of detecting surface-breaking defects and is not effective for detecting subsurface defects. It also requires a clean and dry surface to be effective and may not be suitable for use on certain materials, such as porous materials.
There are three types of penetrant testing: Type I (Fluorescent), Type II (Visible), and Type III (Visible & Fluorescent). Each type uses a different type of penetrant and developer and has different application and removal procedures.
Penetrant testing is commonly used in industries such as aerospace, automotive, and manufacturing to detect surface defects in materials such as metal, plastic, and ceramic components. It is also used in the inspection of welds, castings, and forgings.
The typical sensitivity of a visible penetrant is Level 2; as dictated by the EN-ISO 3452-2 standard.
The typical sensitivity classes of a fluorescent penetrant are Level 0.5, Level 1, Level 2, Level 3 & Level 4; as dictated by the EN-ISO 3452-2 standard.
Type testing
When seeking approval for a penetrant in accordance with material specifications such as AMS 2644 and EN ISO 3452-2, the penetrant manufacturer is responsible for getting the product Type tested. This involves sending a sample of the penetrant off to an independent laboratory for verification against a comprehensive set of standard tests.
Batch testing
During the routine manufacture of a penetrant and its associated consumable products, it is a requirement under material specifications such as AMS 2644 and EN ISO 3452-2 to carry out a number of batch-specific tests, including flash point, viscosity and fluorescent brightness (Type 1 systems only). These specifications also specify the sampling rate and dictate that we should publish these results on a certificate of conformance. For MR Chemie penetrants, cleaners, developers and emulsifiers, these certificates of conformance are referred to as Batch Inspection Certificates (or) Test Certificates
In-use testing
When a penetrant is being used, there are a set of in-use tests that need to be carried out by the customer. ASTM E1417 has established standards for performance checks for in-use materials.
The sensitivity of a penetrant is not just simply its ability to find different sized cracks/defects; it also relates to aspects such as the type of surface finish. For example, on a rough casting you would not want to use a high sensitivity penetrant as it would be too difficult to remove, and you would see a lot of penetrant in the background. Conversely, on a highly polished part you would not want to use a low sensitivity penetrant as the risk of over washing and removing penetrant from the cracks/defects would be high. The sensitivity of a penetrant is ultimately determined by the independent laboratories that assess the penetrant in accordance with material specifications such as AMS 2644 and EN-ISO 3452-2.
MR Chemie offers a range of Eco-Line products like MR67DL, MR313DL in aerosols for use where flammability is an issue. These products are equipped with non-flammable carrier media and propellents. Alternatively, products in bulk can also be opted for.
Minimum penetration time is 2 to 5 minutes, with 10 minutes being adequate for most situations. Lower temperatures will thicken the penetrant and require longer penetration times. Higher temperatures will lower the viscosity of penetrant and requires much lesser penetration time. Please note that this information is for guidance purposes only. With any penetrant – fluorescent or visible – the penetrant dwell time will be dependent on the type of material (metals, plastics, ceramics, castings, forgings, rolled materials, welds, etc) as well as temperature. We recommends that prior testing is carried out when inspecting different material types, or when inspecting at different temperatures, to establish the most appropriate dwell time.
Whilst MR Chemie penetrants can be used on ceramic, plastic and/or composite materials, the dyes within them can cause staining. It is also possible that the penetrant will soften or even dissolve the base material of some plastics. We recommend testing prior to use for compatibility.
Over time, penetrant residue can build up within test panels, which will affect their performance. Also, in a hard water area, it is possible to get salt and limescale deposits within the panels. Our recommendations on cleaning are:
Pre-soak the panels in hot water (ca. 50-70ºC) for a few minutes. This will soften any residual penetrant.
Use a polar solvent such as acetone, methyl ethyl ketone (MEK) or isopropanol in combination with an ultrasonic bath. This way you get a combination of the solvent action and also a vibrational effect to release any residues. Prior to doing this, we recommend that you carry out a workplace risk assessment to minimise or eliminate any risk to an operator.
If you are in a hard water area, you could also use a weak solution of a limescale remover. Avoid using strong acids or prolonged contact with a limescale remover as this will cause damage to the chrome plating. Ensure that all traces of limescale remover are removed by rinsing with deionised water.
Ensure that the panels are fully dried before reusing.
The material can be disposed off according to the local regulations. Further details are available in our MSDS.
A dual penetrant is a Type 3 penetrant that is both visible under daylight and fluorescent under UV light.
MR® Chemie offers various Type 3 penetrants which are highly sensitive. This features an advantage where cracks can be made visible under UV light and tends to be much more sensitive than the visible light indications.
MR Chemie has always worked towards making cleaner and greener products and coin it as ECOLINE. Typically, Eco-Line penetrants do not contain any hazardous ingredients and are free from all the GHS labels making it a safer product for both humans and the environment.
While MR Chemie Dual penetrants offer a good sensitivity under UV light, However, we do not recommend switching a fluorescent penetrant with a Dual type penetrant.
MR Chemie offers a wide range of penetrants based on the Carrier Media, Aerosol category, Approvals and others.
Carrier Media
Carrier Media
- Generation 1 - Oil based
- Generation 2 - Glycol based
- Generation 3 - Solvent-free medium
- Flammable
- Non-Flammable
- Aerospace
- Nuclear Power
- General Industry
- Others