Callington · NDT & Inspection Equipment
Callington CalCheck D-2 is a solvent based white developer that draws trapped penetrant out of surface-breaking defects and provides the white background against which indications are read, supplied in a 400 ml aerosol and compliant with ASME BPVC Section V, ASTM E165 and AMS 2644.
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
The developer quickly wicks out penetrant entrapped in surface defects. This is the mechanism that makes a hairline crack visible: the developer draws the dye back to the surface and spreads it sideways, so an indication is far wider than the defect that produced it.
D-2 covers the test surface completely as a thin, uniform, bright white matt coating. A matt finish rather than a gloss one is deliberate — it eliminates specular reflection under inspection lighting, which is what lets a faint indication be seen at all.
The coating enhances penetrant contrast by obliterating background interference, so red indications are read against white rather than against mill scale, grinding marks or weld texture. Easy indication detection is a direct function of that contrast.
Easily re-dispersible and quick drying in a ready-to-use formulation. There is no mixing, no suspension to maintain and no settling to manage, which is the practical difference between an aerosol developer and a wet developer bath on a site job.
Removed by light brushing or a spray water rinse, so the component can be returned to service without an aggressive cleaning step. CalCheck R-2S is used for final cleaning where a solvent clean is specified.
Meets stringent low sulfur and chloride requirements, which is mandatory when inspecting austenitic stainless steel and nickel alloys where residual contaminants can contribute to stress corrosion cracking.
Technical data
Published manufacturer specifications. Where a figure affects your welding procedure, confirm it against the instruction manual for your specific configuration.
| Colour | White |
|---|---|
| Density | 0.88 g/ml |
| Flash point | 6 °C |
| ASME BPVC Section V | Compliant |
|---|---|
| ASTM E165 | Compliant |
| AMS 2644 | Compliant |
| Packaging | 400 ml aerosol |
|---|---|
| Shelf life | 60 months (5 years) from date of manufacture |
| 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. Causes serious eye irritation. May cause drowsiness or dizziness. |
|---|---|
| Precautions | Wear eye protection. Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. 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 D-2 Solvent Based White Developer, 400 ml aerosol | 1562/400 |
| Description | Part number |
|---|---|
| CalCheck R-2S Cleaner / Remover, 400 ml aerosol | 1563/400 |
| CalCheck VP-2S Solvent Removable Visible Penetrant, 400 ml aerosol | 1561/400 |
Operating essentials
The surface must already have been cleaned with CalCheck R-2S, had CalCheck VP-2S penetrant applied for its 5 to 30 minute dwell, and had excess penetrant removed with a lint-free cloth moistened with R-2S. The surface must be dry before the developer is applied.
Shake the aerosol thoroughly so the contents are consistently mixed, and clear the nozzle before use. Spray D-2 directly onto the test area from approximately 20 cm, as a thin even film. Ambient temperature and wind will require that distance to be adjusted outdoors.
Allow 10 to 30 minutes development time, based on the requirement in the governing procedure. Inspect the test area for discontinuities under suitable visible lighting. Indications grow during development, so reading the part too early can under-call a fine defect.
Remove the developer by light brushing or a spray water rinse. Where a solvent clean is specified, remove all penetrant and developer from the test area with CalCheck R-2S.
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
10 to 30 minutes, depending on the requirement in your written procedure. Indications continue to grow during development, so inspecting before the specified time risks under-calling a fine defect.
It wicks penetrant back out of the defect by capillary action and spreads it sideways into the white coating. That is why an indication appears much wider than the crack that produced it, and it is why the developer step cannot be skipped — without it most surface-breaking defects are simply not visible.
By light brushing or a spray water rinse. Where a solvent clean is required, use CalCheck R-2S Cleaner/Remover to take off all remaining penetrant and developer.
ASME BPVC Section V, ASTM E165 and AMS 2644. It also meets stringent low sulfur and chloride requirements for use on austenitic stainless steel and nickel alloys.
Shake the can thoroughly before use so the contents are consistently mixed, but it is otherwise a ready-to-use, quick drying, easily re-dispersible formulation. There is no suspension to maintain as there would be with a wet developer bath.
6 °C. It is an extremely flammable aerosol in a pressurised container, causes serious eye irritation, and may cause drowsiness or dizziness. Wear eye protection and keep away from all ignition sources.
POFIS supplies the 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 D-2 White Developer 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.
