Description
TQC Bresle Patch
TQC Bresle Patch is use to test the salt contaminants on the surface, which may cause major problems. And it also increase maintenance costs. Bresle test commonly use in shipping, vessels, ballast tanks, oil and gas piping, industry buildings and steel structures in general. Coating failure such as blistering and corrosion may be the result of too high level of salt prior to painting. The Bresle Method described in the ISO 8502-6 is commonly uses to measure the level of surface salts prior to coating. A bresle patch (a small self-adhesive plastic patch) with a washed latex membrane and a known surface area is uses to dissolve the soluble salts.
One Bresle patch contributes with less than 8 mg NaCI/m2 (0,8μg Na/CI/cm2)> For actual values see certificate.
New TQC Sheen Bresle Patch
TQC Bresle Patch is stronger, and the same time has a clean removal, negligible patch contamination, no breaking foam and is silicone-free. TQC Sheen Bresle patch conform ISO 8502-6 Annex A & ISO 8502-9,is a round self-adhesive plastic patch with a medical grade membrane and a known surface area. Due to the round shape it is stronger, whilst at the same time the patch has a clean removal, negligible patch contamination, no breaking foam and is silicon free. Each patch is certified and traceable. This unique Bresle patch is already test by global coating industry leaders.
Bresle Method
Bresle patches are uses to test for surface salt contaminants. The patch is described in ISO 8502-6 and -9, also known as the Bresle Method. This Bresle method is commonly uses to measure the level of surface salts prior to coating.
Bresle patch prevent maintenance costs
A too high level of salts may cause coating failures like blistering and corrosion. This might cause major problems and increase maintenance costs for shipping, vessels, ballast tanks, oil and gas piping, industry buildings and steel structures in general. That’s why measuring the level of salts prior to coating is essential.
Bresle Sampler according ISo 8502-6
- For measuring salt contamination in accordance with ISO 8502-6,9
- Low-tack adhesive definitely easy for patch removal with no residue to clean
- Works on nearly any material or surface geometry
- Latex-free and also Lower cost than latex patch
- Easy-to-use in any orientation
- Certify included
The Bresle method sampler a surface by means of “surface extraction”. Put simply, this method involves placing a volume of water in a chamber against the surface. The water dissolves soluble salts present on the surface, raising the electrical conductivity of the water. The measured increase in conductivity establishes the concentration of soluble salts. Note that there is no “industry standard” for acceptable levels of surface contamination. Project specification must indicate the maximum quantity of soluble salts can remain on the surface before the coating is apply.
Before the application of protective coatings, steel substrates must be carefully prepared and cleaned to ensure the coating will meet performance requirements and avoid premature failure. As part of this surface preparation, abrasive blast-cleaning is commonly uses to remove oxidation and existing coatings from the steel. Once the bare steel surface is exposed, there is an ever-present risk of contamination by water-soluble salts that naturally occur in an environment.
Soluble salts are not visible to the naked eye and If allowed to remain on the substrate in sufficient quantities. They can draw moisture through the coating causing premature coating failure from osmotic blistering or disbondment. In some cases, the abrasive blast media itself can be contaminated with water-soluble material (e.g., chloride or sulfate salts) which is then transferred to the steel surface during cleaning and may ultimately cause premature coating failures.
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