The PosiPatch is a reusable, adhesive-free magnetic ring-held Bresle patch with an air-permeable membrane for auto air release. DeFelsko also offers disposable adhesive and latex patches with low-tack adhesive. All types conform to ISO and ASTM, streamline patch testing, and reduce per-test cost and preparation time.

DeFelsko Bresle Method Patch

DeFelsko Bresle patches let inspectors dissolve and sample surface salts via controlled water injection and conductivity measurement. PosiPatch is reusable and magnetically mounted, while Adhesive and Latex patches provide single-use alternatives. Each patch type is supplied with calibration traceability and optimized for field or lab salt contamination verification.

DeFelsko Bresle Method Patch

Features

01
Reusable magnetic patch (PosiPatch)

Held by magnetic ring (rigid or flexible), no adhesive residue, multiple uses

02
Low-tack adhesive patches

Self-adhesive polyurethane (latex-free) or latex variants with easy peel, leave no residue

03
Automatic air escape membrane

Air is automatically expelled via permeable membrane during water injection

04
Conforms to ISO/ASTM Bresle method

Patch designs satisfy ISO 8502-6 / ISO 8502-9 extraction requirements

05
Flexible for surface geometry

Flexible magnetic ring works for curved surfaces (pipes) with minimum diameters

Overview

DeFelsko Bresle Method Patch
SpecificationValue / Description
Test area1,250 mm² (patch diameter ≈ 44.4 mm)
Test volume2.5 – 3 ml typical (for PosiPatch reusable patch) 
Patch diameter44.4 mm (1.75 in) 
Magnetic ring diameter66.9 mm (2.6 in) for PosiPatch ring
Background contamination limit< 3 mg/m² for reusable PosiPatch (background salt on patch before test)
Pack / countE.g. PosiPatch reusable (24 pack) ; Adhesive patches in 25 packs 
Adhesive patch typePolyurethane, low-tack adhesive, latex-free 
Latex patch optionISO 8502-6 conforming, with easy-open tab & low-tack adhesive 
ReusabilityPosiPatch can be reused multiple times (10+ uses typical) until seal wears