Callington · NDT & Inspection Equipment
Callington CalCheck B-MAG is a black oxide magnetic particle oil dispersion for visible-light magnetic particle inspection, with 0.5–4.0 µm particles in a refined light petroleum distillate, achieving SAE sensitivity of 6 holes and compliant with ASME BPVC Section V, ASTM E709 and ISO 9934-2.
Price on request. Supplied from Abu Dhabi across the UAE and GCC — quotations include confirmed lead time and delivery terms.
Where it is used
Features
Black magnetic oxide suspended in a highly refined light petroleum oil. Particles rapidly collect at leakage fields produced by discontinuities in ferromagnetic material, forming black indications readable under ordinary visible light — no UV lamp, no darkened enclosure, no irradiance verification.
B-MAG achieves a sensitivity of 6 holes on the SAE ring test. That is the standard quantitative measure of a magnetic particle system’s ability to resolve small subsurface discontinuities, and it is the figure a procedure writer compares when qualifying a consumable.
Particle size ranges from 0.5 to 4.0 µm with an average of 1.5 µm. Finer particles are more mobile in the suspension and migrate more readily to weak leakage fields, which is what produces a defined indication at a tight crack rather than a vague smudge.
The suspension has a low background colour, so indications stand out. Used over CalCheck WCP white contrast paint, the combination gives black particles on a bright white matt background — the highest contrast available in visible-light MPI.
Particles are easily agitated and fast acting, producing defined indications quickly and accurately. Suspension stability matters: particles that settle and will not re-disperse give inconsistent results between the first and last part of an inspection run.
Suitable for use with both stationary magnetic test benches and portable equipment such as yokes and prods, so the same consumable covers workshop and field inspection.
Complies with ASME Boiler and Pressure Vessel Code Section V, AMS 2641, AMS 3041, AMS 3042, AMS 3043, ASTM E3024, ASTM E709 and ISO 9934-2 — covering both the pressure equipment and aerospace specification families.
Technical data
Published manufacturer specifications. Where a figure affects your welding procedure, confirm it against the instruction manual for your specific configuration.
| Colour | Black |
|---|---|
| Particle concentration | 1.2–2.4 ml |
| Particle size | 0.5–4.0 µm, average 1.5 µm |
| SAE sensitivity | 6 holes |
| Suspension fluid | Clear highly refined light petroleum distillate |
| Viscosity | <3 cSt ± 5% (ASTM D445 at 38 °C / 100 °F) |
| Flash point | >93 °C (>200 °F) |
| ASME Boiler and Pressure Vessel Code Section V | Compliant |
|---|---|
| AMS 2641 | Compliant |
| AMS 3041 | Compliant |
| AMS 3042 | Compliant |
| AMS 3043 | Compliant |
| ASTM E3024 | Compliant |
| ASTM E709 | Compliant |
| ISO 9934-2 | Compliant |
| Packaging | 400 ml aerosol |
|---|---|
| Storage | Protect from sunlight. Do not expose above 50 °C / 122 °F. |
| Batch traceability | Batch numbers on the bottom of aerosol cans or on bulk container labels. Certificate of Conformance supplied with the product. |
| Hazard | DANGER. Extremely flammable aerosol. Pressurised container: may burst if heated. May be fatal if swallowed and enters airways. |
|---|---|
| Precautions | Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. Do not spray on an open flame or other ignition source. Do not pierce or burn, even after use. |
| Disposal | Dispose of contents and container in accordance with local regulation. |
Ordering information
Quote these part numbers on your enquiry or LPO to guarantee the exact configuration. If you are unsure which variant suits your application, send us the joint details and we will specify it.
| Description | Part number |
|---|---|
| CalCheck B-MAG black oxide magnetic particle dispersion, 400 ml aerosol | 1567/400 |
| Description | Part number |
|---|---|
| CalCheck WCP White Contrast Paint, 400 ml aerosol — applied first | 1568/400 |
| CalCheck F-MAG Fluorescent Magnetic Particle, 400 ml aerosol — UV alternative | 1566/400 |
Operating essentials
Clean the test surface and allow it to dry. Apply CalCheck WCP white contrast paint to the area being inspected, following the directions for the contrast paint, and allow roughly 20 seconds for it to dry.
The longer B-MAG is stirred or agitated, the more uniform the spray. Apply a liberal coating to the inspection area so there is sufficient magnetic particle to flow over the surface. Allow the excess fluid to run off.
Inspect the surface under visible light. Collections of black magnetic particles reveal discontinuities at the leakage fields.
Clean and repeat the process with the magnetising direction changed. A discontinuity lying parallel to the magnetic field produces little or no leakage field, so a single orientation is never a complete inspection — this step is a code requirement, not a refinement.
These directions describe the basic process only. They may need to be amended by the user to comply with the applicable specification and inspection criteria provided by the contracting agency. Where this sheet and your approved written procedure differ, the written procedure governs.
Downloads
Need the instruction manual or spare parts list for this machine? Request it from weldiv@pofis.ae and we will send the current revision.
Frequently asked
B-MAG is black oxide and is read under ordinary visible light, usually over WCP white contrast paint, with SAE sensitivity of 6 holes. F-MAG is fluorescent, read under ultraviolet light in a darkened area, with higher SAE sensitivity of 7 holes. Use B-MAG for routine site and daylight inspection; use F-MAG where the procedure requires maximum sensitivity.
6 holes on the SAE ring test. This is the quantitative measure a procedure writer uses when qualifying a magnetic particle consumable against a specification.
Not strictly, but it is the recommended sequence and it is step 2 of the manufacturer’s own directions. Black particles on bare grey steel are difficult to read; black particles on CalCheck WCP white contrast paint give the highest contrast available in visible-light MPI.
0.5 to 4.0 µm with an average of 1.5 µm, suspended in a clear highly refined light petroleum distillate with a viscosity below 3 cSt at 38 °C.
ASME Boiler and Pressure Vessel Code Section V, AMS 2641, AMS 3041, AMS 3042, AMS 3043, ASTM E3024, ASTM E709 and ISO 9934-2.
Yes. It is suitable for both stationary magnetic test equipment and portable equipment, so the same aerosol covers bench inspection and field work with a yoke or prods.
A discontinuity lying parallel to the magnetic field produces little or no leakage field and will not attract particles. Re-magnetising at roughly 90 degrees to the first direction is what catches those defects, and it is a requirement of ASTM E709 and ASME Section V rather than an optional extra.
POFIS supplies the Callington CalCheck range from Abu Dhabi across the UAE and GCC. Request a quotation on this page or email weldiv@pofis.ae for price, pack quantities, lead time and Certificate of Conformance.
Procurement & supply
The Callington CalCheck B-MAG Black Magnetic Particle is supplied from Abu Dhabi by Perfect Oilfield & Industrial Supply LLC across the UAE and GCC. The information below covers what procurement and QA/QC departments normally need before raising a purchase order.
Stock items dispatch from Abu Dhabi within 24–48 hours. Indent items are quoted with a confirmed lead time at the time of offer.
POFIS is an approved ADNOC vendor and is listed on the approved vendor lists (AVL) of major operators and EPC contractors across the GCC. We can complete supplier registration and prequalification documentation on request.
Standard credit terms are available to registered corporate accounts. LPO, LC and advance payment are all accepted.
Delivery across the UAE and the wider GCC. Quotations can be issued on EXW, FOB, CIF or DDP terms to suit your project.
Product is supplied to the manufacturer’s published specification, with a Certificate of Conformance available for every batch.
Technical support on product selection, inspection procedure and resupply from our Abu Dhabi welding division.
Price on request
Send the form and the POFIS welding division replies with pricing, confirmed lead time, delivery terms and availability. Tell us who you are and what the job is, so the reply can be specific to it rather than a catalogue price list.
