The Bresle Test will measure water-soluble salts and corrosion products on blast-cleaned steel. These
compounds are almost colorless and are localized at the lowest point of the rust pits.
If they are not 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.
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.
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.
Testing Abrasives
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.
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 Area, Test Volume and Dimensions
Test area is 1250mm2 and using a 2.5ml volume or water. Expression of results are based on section
7 of ISO 8502-9.
Back Ground Contamination and Type of Patch
The elastomer on the Bresle Patch is not latex or polyurethane. The elastomer 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.
High Adhesion Patches
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.
Prices
Prices subject to change Prices listed in US dollars for domestic shipments within US, Canada, & Mexico only Export orders require quotations - click here for a quote For more info call us 1-800-762-2478 or 954-946-9454.
Item Number
Item
Prices
CD-501010
Economy Bresle patches (pack of 50) Standard Adhesion
$75.00
CD-501020
Economy Bresle patches Plus (pack of 50) High Adhesion
Prices listed in US dollars for domestic shipments within US, Canada, & Mexico only 
