Economy Bresle Patches
Article No. 10875
Bresle Patches Standard High Adhesion
The Bresle Test will measure water-soluble salts and corrosion products on blast-cleaned steel. Those compounds are almost colorless and are localized at the lowest point of the rust pits. If they aren't removed prior to painting, chemical reactions can result in blister formation and accumulations of rust that destroy the adhesion between the substrate and the applied protective coating.
Features
- The Bresle Patches are latex and chloride free
- They have an elastomer that the syringe does not pierce and comply with ISO 8502-6 and 8502-9.
- The elastomer on the Bresle Patch is not latex or polyurethane. It is a specific material manufactured for the Bresle Patch. We do not use latex due to latex being chloride containing material and polyurethane is not a strong enough material to stop the syringe piercing the elastomer when carrying out the injection-sucking cycles as per ISO 8502-9 section 6.
- When high adhesion strength Patches are required for testing on very corroded or coarse-grade blasted steel, use the Bresle Patches Plus as an alternative to the Standard Bresle Patches.
Technical Attributes
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- Data
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Test Area: 1250mm2 Test Volume: 2.5ml volume or water Expression of results are based on section 7 of ISO 8502-9. Patch Shelf Life: The only degeneration on the Bresle Patches is the adhesive if exposed to extreme temperatures. It is recommended that the patches are used within a 12-month period from date of purchase.
Test Methods:ISO 8502-6: Preparation of steel substrates before application of paints and related products. Tests for the assessment of surface cleanliness. Part 6: Extraction of soluble contaminants for analysis. The Bresle method.
ISO 8502-9: Preparation of steel substrates before application of paints and related products. Tests for the assessment of surface cleanliness. Part 9: Field method for the conductometric determination of water-soluble salts.
Standards
ISO 8502-6 and 8502-9
Procedure
ISO 11127-6: Preparation of steel substrates before application of paints and related products. Test methods for non-metallic blast-cleaning abrasives. Part 6: Determination of water-soluble contaminants by conductivity measurement. The Bresle Test can also be used for testing non-metallic abrasives for water-soluble salts and corrosion products.
- Record the conductivity of the deionized water using the same procedure under the section Taking Measurements.
- Place 100gm of abrasive into a flask and add 100ml of the deionized water that you have recorded the conductivity of. Shake for 5 minutes and allow to stand for 1 hour. If the liquid does not clear, filter by any suitable method.
- Using the syringe, withdraw approximately 1ml of contaminated water from the flask and place 3 to 4 droplets into the Measuring Electrode on the Conductivity Meter, ensuring that the contaminated water is in both sections of the electrode with no air bubbles.
- Record the conductivity of the contaminated water displayed by the meter when the smiley face appears. Subtract the initial deionized water conductivity reading from the contaminated water conductivity reading. Record the results as shown in µS/cm.
Delivery Content
Economy Bresle patches Plus (High Adhesion) come in pack of 35
Accessories