Met-L-Chek®

Penetrant Professor Approved

Find Cracks Fast

© 2016

An Introduction to Met-L-Chek Company and Penetrant Inspection

Met-L-Chek Company1639 Euclid Street, Santa Monica, CA 90404 U.S.A.

Phone: (310) 450-1111 Fax: (310) 452-4046 Email: info@met-l-chek.com

Met-L-Chek Company has been a leader in penetrant-inspection technology for over 64 years, manufac-turing NDT materials, contributing to specification development, and sharing technical insights through its popular Penetrant Professor newsletter. Met-L-Chek Company was incorporated in 1952 by the late Loy W. Sockman, holder of the first USA visible dye penetrant patent. Loy Sockman helped develop the first ver-sion of the penetrant approval specification MIL-I-25135. Met-L-Chek Company products are sold under the Met-L-Chek® and Pen-Chek® trademarks. Met-L-Chek Company products are manufactured in the United States and under license in the Netherlands by NDT Europa BV. and made available through a global network of authorized distributors.

Who We Are:William Mooz, president of Met-L-Chek Company, has a metallurgy degree from MIT, holds several pat-ents, and is a licensed professional engineer in California. Bill began his NDT career under Werner von Braun at Redstone Arsenal. A frequent speaker at national and local ASNT meetings, Bill has also authored numer-ous articles in Materials Evaluation. His background includes appearances before numerous technical and governmental bodies including the Joint Chiefs of Staff, NATO, and the World Congress of NDT. An ASNT Fellow, Bill has chaired the ASNT penetrant committee and helped write the ASNT penetrant handbook. He is an associate technical editor of Materials Evaluation, editor of the PT level III study guide, and editor of the PT classroom training manual. His committee memberships include ASTM Committee E-07 and SAE AMS Committee K where he developed key portions of the penetrant approval specification AMS-2644.

Michael White, general manager of Met-L-Chek Company, has an MBA from Lake Forest Graduate School of Business. He spent 24 years with Magnaflux Corporation formulating and marketing NDT materials, and several years with Brent America (Ardrox®) managing NDT in North America. Mike holds an NDT penetrant material patent. Mike is an ASNT Fellow, past chairmen of the ASNT penetrant methods technical committee, and contributor to the ASNT penetrant handbook. His committee memberships include ASTM Committee E-07, and SAE AMS Committee K. Mike helped develop penetrant processing specification ASTM E-1417.

What We Do: • Manufacture visible and fluorescent penetrants, magnetic particles, and filtered particles (inspection of ceramics). Our products meet or exceed military, civilian and corporate specifications, and several are the qualification standards for AMS-2644. • Recertify in-use materials through our Pen-Chek® and Mag-Chek™service program. • Share technical information through our free newsletter The Penetrant Professor. • Price products very competitively and process and ship orders quickly.

Mario, Berto, Carlos, Leslie, Lisa, RickBill, Edy, Mike

CeeBee® Partnership:There is a natural symbiotic relationship between CeeBee® Aviation and Met-L-Chek®. Every NDT inspec-tion process requires some, if not extensive, pre-cleaning of the part or inspection surface; whether it is visual, penetrant, magnetic particle, ultrasonic, eddy current, radiography, acoustical emission or thermographic in-spection. Just as Met-L-Chek Company’s materials are approved to major aerospace specifications, Cee-Bee’s line of cleaners meet the stringent requirements for major aerospace OEM’s. Cee Bee Aviation products are available world wide from manufacturing facilities in North America, United Kingdom, and Singapore. Most aerospace OEM’s require that the in-use penetrant materials be monitored on a regular basis to insure continued usability as defined in ASTM E-1417 and AMS-2647. Met-L-Chek Company’s Pen-Chek® pro-gram meets these requirements and is available from Met-L-Chek Company USA, NDT Europa in The Netherlands, and CeeBee Singapore.

High quality, specification approved, batch consistent materials are the standard for CeeBee® and Met-L-Chek®.

Penetrant Inspection:Penetrant inspection is a surface inspection method used to highlight fine cracks, porosity, and through leaks on most solid surfaces. It is usable on most metals, some plastics, composites, and synthetic materials. Pen-etrants are principally of two types; fluorescent called “Type 1” and visible red dye called “Type 2”. Fluo-rescent penetrant inspection is performed in a darkened area under UV-A illumination, and visible penetrant inspection is performed in bright white light.

Fluorescent penetrants are available in sensitivity levels 1/2 to 4 with 4 being the highest. Visible penetrants are not classified by sensitivity level but are generally considered to be roughly equal to level 1 fluorescent penetrant inspection. Penetrants are further classified as to their surface removal methods; “A” water washable “B” post emulsifiable lipophilic “C” solvent wipe “D” post emulsifiable hydrophilic.

Visible penetrant indication Fluorescent penetrant indications

CeeBee Singapore Office staffwelcomes

Mike White to Singapore

CeeBee® personnel: Wilson Wang, Mike Lin and Ee Poh Choon

introducing ST Aerospace, Xiamen P.R.C.

to Met-L-Chek®

Whom We Serve:Met-L-Chek® users include the U. S. Air Force, U. S. Nuclear Navy, Bay Ship & Yacht, Boeing Helicopter, China Steel Corp., Consolidated Foundry, Emirates Airlines, Honda, GE Power Generation, MBD Repair, Nestle Ice Cream, Pratt & Whitney, Southern Classic Foods, SpaceX, Tesla, and countless casting, forging, and foundry shops in Asia and South America; aircraft manufacturers in Asia, Europe, and the USA; aircraft engine overhaul shops in Asia and the Middle East; nuclear power plants; oil refineries; test labs, and manu-facturers of ice cream and pharmaceutical products. Met-L-Chek Company products are found wherever the quality and integrity of metal parts is important.

The other components of the process are emulsifiers, solvent cleaners/removers, and developers. Materials are available in bulk containers for production line operations, and portable aerosol cans and kits for remote and spot inspections. The typical use temperature range is 4.4˚C to 51.6˚C (40˚F to 125˚F).

Aerospace components are generally only inspected with Type 1 fluorescent penetrants using dip tanks or bulk spray applications. Type 2 visible penetrants find wider use in weld inspection, maintenance repair inspection, nuclear component inspections, food processing heat exchanger inspections. Situations that are generally spot or small area inspections and where a darkened inspection area is not possible, as required for fluorescent inspection. The majority of Type 2 inspections is carried out with aerosol cans because of the spot inspection nature of the testing requirements.

In aerospace component inspection the most commonly used materials are Type 1, Method “A” (water wash-able) levels 2 and 3. Hot section rotating turbine engine components are generally inspected with Method “D” levels 3 & 4 fluorescent penetrants. OEM’s specify Method and Sensitivity level for all components. A higher sensitivity level can be used but never a lower.

High quality inspection materials are qualified to AMS-2644 and listed on QPL-2644 (Qualified Products List). The sensitivity of a penetrant per AMS-2644 is established by Wright Patterson AFB Materials Labo-ratory, not by the penetrant material supplier. Another specification based on AMS-2644 but with some mi-nor differences is ISO-3452, which finds use in Europe for generally non aerospace applications. All major aerospace OEM’s require a material be listed on the QPL for AMS-2644 before it may be considered for use. Met-L-Chek Company materials are on the AMS-2644 QPL

Penetrant Material Definitions

AMS-2644, AMS-2647 & ASTM E-1417 ISO-3452 TYPE 1 – Fluorescent Dye TYPE I – Fluorescent Penetrant: Sensitivity levels 1/2 – 4. Sensitivity levels 1/2 – 4. TYPE 2- Visible Dye TYPE II- Color Contrast Penetrant No sensitivity levels. Sensitivity levels 1-2. TYPE III – Dual fluorescent & visible Sensitivity per visible levels

Method A – Water washable. Method A – Water washable. Method B – Post-emulsifiable, lipophilic. Method B – Lipophilic emulsifier. Method C – Solvent-removable Method C – Solvent. class 1 – Halogenated. class 1 – Halogenated class 2 –Non-halogenated. class 2 –Non-halogenated. class 3 – Special application class 3 – Special application Method D –Post-emulsifiable, hydrophilic Method D – Hydrophilic emulsifier. Method E – Water and solvent Developer Forms Developer Forms “a” – dry powder. “a” – dry powder. “b” – water soluble. “b” – water soluble. “c” – water suspendible. “c” – water suspendible. “d” – non-aqueous (solvent) for Type 1 penetrants. “d” – non-aqueous for Type I. “e” – non-aqueous (solvent) for Type 2 penetrants. “e” – non-aqueous for Type II & III. “f” – special application. “f” – special application.

In very simple terms the penetrant inspection process consists of several steps: Step 1 - clean the inspection surface.Step 2 - apply penetrant and allow it to penetrate the surface discontinuities.Step 3 - remove surface penetrant and dry surface if water is used.Step 4 - apply developer and allow time for indications to form.Step 5 - inspect.

Product Guide AMS-2644 QPL

Product Type Methods Sensitivity Form Class FBP-911 1 A & C 1 NA NA FP-921 1 A & C 1 NA NA FBP-912 1 A & C 2 NA NA FP-922 1 A & C 2 NA NA FBP-913 1 A & C 3 NA NA FP-923 1 A & C 3 NA NA FBP-914 1 A & C 4 NA NA FP-93A(M) 1 B, C, & D 2 NA NA FP-95A(M) 1 B, C, & D 3 NA NA FP-97A(M) 1 B, C, & D 4 NA NA

VP-30 2 A & C NA NA NA VBP-300 2 A & C NA NA NA VP-31A 2 B & C NA NA NA

D-70 1 & 2 A, B, C, & D 1/2 - 4 d & e NA D-72A 1 A, B, C, & D 1/2 - 4 a NA D-76B 1 B, C, & D 1/2 - 4 b NA D-78B 1 & 2 A, B, C, D 1/2 - 4 c NA

E-50 2 B NA NA NA E-57 1 & 2 B 1/2 - 4 NA NA E-58D 1 D 1/2 - 4 NA NA

E-59 1 & 2 C 1/2 - 4 NA 2 E-59A 1 & 2 C 1/2 - 4 NA 2 R-503 1 & 2 C 1/2 - 4 NA 2 R-504 1 & 2 C 1/2 - 4 NA 2

There are numerous processing specifications for the penetrant inspection process, the major ones are ASTM E-165 and ASTM E-1417 for most general applications, AMS-2647 for aerospace applications, and the ASME Pressure Vessel and Boiler Code for nuclear and power generation applications. Many OEM’s have their own processing specifications which include portions of one or more of the above mentioned specifica-tions. A user is either working to an OEM’s specification, a consensus specification such as ASTM E-1417, a customers specification, or their own procedure. A written procedure should be available to anyone required to perform penetrant inspection.

Method "C" InstructionsUse Met-L-Chek® E-59A, R-503, or R-504 cleaner to remove oil, grease and other contaminants from test surface. Spray surface and wipe clean. Repeat as needed. Allow part to dry completely before applying penetrant.

Apply penetrant onto clean dry test surface which is at a temperature between 40˚-125˚F (4˚-52˚C). Al-low a minimum penetration time of 10 minutes for specification work.

Use clean lint-free cloth to remove most of the surface penetrant. Dampen a clean cloth with E-59, E-59A, R-503, or R-504 and wipe remaining penetrant from the surface. Do not spray cleaner directly onto the surface as sen-sitivity will be impaired.

Shake Met-L-Chek® D-70 before using to re-suspend developer. Spray a thin even coating on the part surface. Avoid a wet runny coat-ing. Allow 10 minutes for thorough indication development.

Inspect visible penetrants under bright white light. Inspect fluores-cent penetrants in a darkened area under ultra violet UV-A illumination.

TYPE 1Method “C”

TYPE 2Method “C”

Fluorescent Penetrant Inspection Methods based on ASTM E-1417

Method "B" (post emulsifiable)Method "A"(water washable)

InspectUV-A light of >1000 µW/cm2

Apply penetrant-spray, dip or brush on

Part surface temperature 40˚-125˚F

FP-900, FBP-911, FBP-912, FBP-913, FBP-914, FP-921, FP-922, FP-923, FWP-931A,

FLP-1

Pre-clean surface300LF, E-59A, R-503, or R-504

Apply aqueousdeveloper

D-78B spray or dip

Wash with waterwater temperature 50˚- 100˚F,

< 40psi(275kPa)

DwellMinimum 10 minutes, 50˚-125˚F

20 minutes, 40˚-50˚F

DwellMinimum 10 minutes; 4 hours

maximum

Apply penetrant-spray.dip or brush on

Part surface temperature 40˚-125˚F

FP-94, FP-93A(M), FP-95A(M), FP-97A(M)

Apply emulsifier E-57dip & drain, or flow on

3 minutes maximum contact time

Method "D" (post emulsifiable)

Apply penetrant-spray.dip or brush on

Part surface temperature 40˚-125˚F

FP-94, FP-93A(M), FP-95A(M), FP-97A(M)

Apply emulsifier E-58D (diluted in water to 20% maxi-

mum for dip 5% for spray)contact time, < 2 minutes

Wash with water, < 1minutewater temperature 50-100˚F,

<40psi(275kPa)

Dry, < 160˚F

Applydeveloper D-70 spray

D-72A dusting

Pre-clean surface300LF, E-59A, R-503, or R-504

Pre-clean surface300LF, E-59A, R-503, or R-504

Dry, < 160˚F

DwellMinimum 10 minutes, 50˚-125˚F

20 minutes, 40˚-50˚F

Wash with waterwater temperature 50˚- 100˚F,

< 40psi(275kPa)

InspectUV-A light of >1000 µW/cm2

Apply aqueousdeveloper

D-78B spray or dip

DwellMinimum 10 minutes; 4 hours

maximum

Dry, < 160˚F

Applydeveloper D-70 spray

D-72A dusting Dry, < 160˚F

DwellMinimum 10 minutes, 50˚-125˚F

20 minutes, 40˚-50˚F

Wash with waterwater temperature 50˚- 100˚F,

< 40psi(275kPa)

InspectUV-A light of >1000 µW/cm2

Apply aqueousdeveloper

D-78B spray or dip

DwellMinimum 10 minutes; 4 hours

maximum

Dry, < 160˚F

Applydeveloper D-70 spray

D-72A dusting Dry, < 160˚F

Choosing Fluorescent (Type 1) Water Washable (Method A) PenetrantsWater washable penetrants are the most widely used for general metal working and even low stress compo-nent aerospace applications. Water washable penetrants are composed of water washable ingredients. The penetrant covered part is simply washed after the prescribed penetration dwell time. Being water washable, excessive wash time or pressure must be avoided with Method “A” penetrants to avoid washing the penetrant from shallow open discontinuities.

The FBP-911, FBP-912, FBP-913 and FBP-914 series covers sensitivity levels 1-4 and was designed to be the most environmentally friendly possible. This series does not contain fats, oils, or greases (FOG’s), and is free of any volatile organic compounds (VOC’s). The constituents are considered biodegradable. This series is smooth washing, non-gel forming and will wash cleanly from rough surfaces.

The FP-921, FP-922 and FP-923 series covers sensitivity levels 1-3. These materials are bright yellow green fluorescent penetrants that are smooth washing, with controlled removal without gelling. They have low vis-cosities, which aids in spraying and reduced drag out in immersion applications. The materials use biodegrad-able surfactants. They are approved by GE, Pratt & Whitney, and Rolls-Royce for non rotating turbine en-gine component inspection. Widely used for investment casting inspection and general industrial applications.

Choosing Fluorescent( Type 1) Post Emulsifiable (Methods B & D) PenetrantsPost emulsifiable penetrants are the choice for hot section rotating turbine engine components and other critical high stress applications. Post emulsifiable penetrants require the use of an emulsifier to render the penetrant water washable. Post emulsifiable penetrants and emulsifiers are qualified to the AMS-2644 speci-fication together and must be used as a family of materials. Method B (Lipophilic) employs E-57 as the emulsifier, which is used as supplied. Method D (hydrophilic) uses E-58D, which is used diluted in water to a concentration of 17 - 20 % for immersion applications and < 5 % for spray. Most aerospace engine OEM’s use, or recommend the use of Method D. Met-L-Chek Company’s level 2, 3, & 4 Method D materials are approved by GE, Pratt & Whitney, and Rolls-Royce turbine engine groups.

Method B Systems Method D Systems Sensitivity Level 2 - FP-93A(M) with E-57 Sensitivity Level 2 - FP-93A(M) with E-58D Sensitivity Level 3 - FP-95A(M) with E-57 Sensitivity Level 3 - FP-95A(M) with E-58D Sensitivity Level 4 - FP-97A(M) with E-57 Sensitivity Level 4 - FP-97A(M) with E-58D

Choosing Visible (Type 2) PenetrantsVisible inspection penetrants are used primarily for field applications where darkening the inspection area and the use of a black light (UV-A) is impractical, such as maintenance weld repair and safety checks. They are used to locate repair work areas on large rough castings and for through leak testing of heat exchangers and tanks where penetrant is applied to one side and developer to the other. Discontinuities in the range of 30µ are routinely detectable and under the right conditions even smaller discontinuities may be highlighted. Special high temperature visible penetrant materials are available which permit inspection of surfaces at temperatures up to 177˚C (350˚F). The majority of the applications use the solvent wipe off (Method C) technique of pro-cessing because most applications are spot or localized inspections. Production or full part inspection may be performed with visible penetrants using Methods “A”, “B” or “D”. VP-30 -Water washable, low viscosity, low in sulfur and halogen, meets EdF, RCC-M nuclear specifications. VBP 300 - Water washable, high viscosity, biodegradable, free of fats, oils, greases and solvents. VP-31A - Post emulsifiable, low viscosity, low in sulfur and halogen, meets nuclear requirements. VP-302 - Special high temperature penetrant used with R-502 remover and D-702 developer

Choosing a Solvent Cleaner/ RemoverAll penetrants that are approved for use to Methods “A”, “B”, & “D”, are approved for Method “C”, solvent wipe off.

Evaporation rate should be considered when choosing a cleaner/remover. When wiping the penetrant residue from a rough surface the slower evaporating remover will keep the wiping media moist and more effective at helping the removal of the penetrant. In the case of verifying a fluorescent indication by wiping the indica-tion with a cotton swab or brush moistened with the remover, the slow evaporating material will make the indications blurry and bleed excessively. In this case a very fast drying cleaner is the right choice. When used as cleaners for pre-cleaning the inspection surface, the slow material will not evaporate readily from the part and could interfere with penetration of the discontinuity by the penetrant. The faster drying cleaners are also better solvents for oils and greases improving their removal from the part. All of the cleaners are flammable and should not be used in confined areas without proper ventilation. They should not be used near open flames or sparks. Nonflammable solvents, have been used in past years, but have been found to be carcinogens or are banned as Ozone Layer Depleting Substances.

Tam Panel or star burst panel indication cleaning is best achieved with the directional spray tube applicators used on R-503 and R-504. Both are approved by Pratt & Whitney.

E-59 - Slow evaporating used as a penetrant remover. E-59A - Moderate evaporation rate, residue free, petroleum solvent cleaner/remover. R-502- Special high temperature penetrant (VP-302) remover. R-503 - Moderate rate, residue free, non-petroleum solvent cleaner/remover. R-504 - Fast evaporating, residue free, solvent cleaner/remover.

Choosing a DeveloperThe use of a developer is required by most testing specifications. The developer draws the penetrant from the flaw site and creates a uniform surface on which to view the penetrant indication.

D-70 non aqueous developer (forms “d” & “e”) is developer powder suspended in a volatile solvent. This type of developer is most commonly used in aerosol cans, but may also be bulk sprayed using a paint sprayer. It is applied after the surface penetrant has been removed and the inspection surface dried. The sol-vent action of this type of developer helps bring the penetrant to the surface enhancing the detectability of the flaw. Low in Sulfur and Halogens it is widely used for nuclear component inspection. It is approved by Boe-ing, Edf, GE, Pratt & Whitney and is the qualification standard for AMS-2644.

D-72A dry powder developer (form “a”) is the most commonly employed developer form with fluorescent penetrants. It is not used with visible penetrants. It is applied by dusting it onto the part after the drying pro-cess. It is approved by Boeing, GE, Pratt & Whitney, and Rolls-Royce.

D-76B water soluble developer (form “b”) is a powder that is dissolved in water and applied to the part after the surface penetrant is removed and prior to drying. It is used with post emulsifiable fluorescent penetrants (Methods B & D).

D-78B water suspendible developer (form “c”) is a powder that is mixed with water (does not dissolve) and applied to the part after the surface penetrant is removed and prior to drying. It is used with both fluorescent and visible penetrants. The developer must be continually mixed to prevent it from settling out of solution.

D-702: high temperature developer (form “f”) used with VP-302 penetrant.

Choosing an Aqueous Alkaline Cleaner & Sealant/Adhesive remover.CeeBee Aviation makes an extensive line of aerospace approved cleaners, paint strippers, and rust inhibi-tors. The cleaners most associated with pre and post penetrant inspection are #300LF and A-7X7. Although these materials have aerospace approvals they find extensive use for pre and post inspection cleaning in any industrial segment. All cleaner residues must be thoroughly rinsed from parts prior to drying for penetrant inspection. Being alkaline cleaners, proper handling and safety precautions must be followed to prevent eye and skin irritation or damage.

A-7X7 is a liquid emulsion concentrate used as a heavy duty hot tank cleaner for parts with heavy grease and oil build up. It has also been used as a spray and ultrasonic cleaner for heavy contaminant removal. * Excellent for removing grease and oil. * Free rinsing. * Safe on steel, aluminum, titanium, magnesium and copper alloys. * Safe on most paints and plastics. * Non-flammable. * Contains no phenolics, cyanides or other heavy metal salts. * Surfactants biodegradable.

Super Bee 300 LF is a low foaming liquid concentrate used as a general cleaner for light oil and greasy part cleaning by immersion, spray or ultrasonic application. It is used in ultrasonic cleaners for thorough cleaning of TAM panels and other NDT known defect test pieces. * Excellent grease and oil removal. * Low foaming when used in agitated tanks and spray washers. * Free rinsing. * Safe on steel, aluminum, titanium, magnesium and copper alloys. * Safe on most paints and plastics. * Non-flammable.

Super Bee 300LF liquid pH adjuster is an alkaline additive concentrate used to maintain the alkalinity of the #300 LF bath, extending its use life. * Contains no heavy metals.

C-105HF is an acid activated, water thin remover for silicone sealants, resins, paints, and adhesives. * Completely dissolves silicone sealants, paints, resins and adhesives. * Water rinseable. * Safe for use on ceramics, glass, aluminum, magnesium, conversion coated magnesium, stainless steel, mild steel, titanium and noble metals. * Contains no phenolics, cyanide, chromates or other heavy metals. * Surfactants biodegradable.

Aerosol Containers:The aerosol package is a self contained spray system. It is under pressure. Excessive heat should be avoid-ed to prevent increasing the can pressure due to propellant expansion, which could cause container fail-ure or bursting. Storage and use at low temperatures may produce erratic spray performance. Store Aero-sols between 4.4˚C- 48˚C (40˚F-120˚F). Met-L-Chek Company uses the highest burst strength aerosol cans available to reduce the risk of can failure. The propellant and sometimes the product are flammable, so flames, sparks, and ignition sources should be avoided. Adequate ventilation should be provided in con-fined work areas, so that vapors do not concentrate and increase the fire hazard and danger of inhalation.

Met-L-Chek Company packages in 16 oz. (400 mL) volume aerosol cans. This is the volume measure of the can capacity and not the product weight fill. Aerosol fills are by net weight. Product and gas densities vary so the same volume fill of different products will have different net weight fills. Most of the 16 oz.(volume) can fills are generally 310 grams or 10.9 oz. net weight. A few products with CO2 propellant have the same volume but a weight fill of 241 grams (8.5 ounces). The weight fill is on the label.

Product Shelf Life:Met-L-Chek Company defines shelf life as the period of storage time, in closed containers, at ambient conditions (50˚-100˚F/10˚-37.7˚C), during which an inspection material will retain its functionality. The stated shelf life of most Met-L-Chek Company inspection penetrant materials is five (5) years from date of batch approval. The shelf life of a particular material is stated on the batch certification. Older materials performance may be verified through the Pen-Chek® recertification program. Inspection materials packed in aerosol cans maintain their functionality providing sufficient propellant remains in the can to expel the material. Aerosol cans that have lost propellant and no longer expel contents effectively should be rendered unserviceable and discarded within the parameters of local, state and federal guidelines. Inspection materials packed in aerosol cans, exceeding the printed shelf life interval, but maintaining sufficient propellant to effectively expel the material, will maintain their functionality/usability and may be used until the materials become depleted or the propellant dissipates (escapes) to a level where the material can no longer be expelled effectively.

In-use materials are not covered by the storage shelf life and warranty. Continued usability of materials may be verified through the Pen-Chek® or Mag-Chek™recertification program. The Pen-Chek® program conforms to the requirements of AMS-2644F and ASTM E-1417. The Mag-Chek™ program conforms to the requirements of ASTM E-1444.

All containers of Met-L-Chek Company products contain a batch number on the label or on the bottom of the can, in the case of aerosols. The batch number consists of 4 numbers, a letter and two numbers. The first numbers are the batch, the letter is for the month (January = A, February = B, March = C, April = D, May = E, June = F, July = G, August = H, September = J, October = K, November = L, December = M; the letter “I”is not used), and the last numbers are the year. This number is required for identifying a material when requesting lost certification papers. The date of batch approval is printed on all bulk material labels as well as the stated storage shelf life period. All Met-L-Chek Company penetrant materials are tested, prior to shipment per the require-ments of AMS-2644F and other OEM requirements, and are certified to their conformance to the requirements. Met-L-Chek Company has been a QPL qualified penetrant manufacturer since 1952.

Bottom of aerosol cansshowing canning date, batch number, and canners ID#.

Met-L-Chek®

Penetrant Professor Approved

Penetrant material manufacturing and Pen-Chek® service center

Met-L-Chek Company1639 Euclid Street, Santa Monica, California 90404 U.S.A.

Phone: (310) 450-1111 Fax: (310) 452-4046 Email: info@met-l-chek.com

NDT-Europa BV.Damsluisweg 77, 1332 EB Almere-Buiten, The Netherlands

Phone: + 31-36-549-50-00 Fax: + 31-36-5495011 Email:info@ndt-europa.nl

CeeBee material manufacturing and Pen-Chek® service center

CeeBee Aviation (McGean Asia)No. 6 Gul Link, Singapore 629376

Phone: +65-6-863-2296 Fax: +65-6-863-2297 Email: sales@ceebee.com.sg

CeeBee material manufacturing

CeeBee Aviation (McGean USA)2910 Harvard Ave., Cleveland, Ohio, 44105 U.S.A.

Phone: 1-216-441-4900 Fax: 1-216-441-4544

CeeBee Aviation (McGean UK)Qualcast Road, Lower Horseley Fields, Wolverhampton, West Middlands,WV1 2QP United Kingdom

Phone: +44-1902-456563 Fax: +44-1902-457443

CeeBee Aviation (McGean China)Rm1215 CIQ Tower, 98 Suhui Road, Suzhou Industrial Park, Suzhou, PR China 215021

Phone: +86-512-62725758 Fax: +86-512-62725768 MLC/CB Guide 3(12)2016©