PosiTest® AT Pull-off Adhesion Testers

Manufacturer: DeFelsko

Part #: ATXXXX

Description:Pull-off Adhesion Testers. Measures adhesion of coatings to metal, wood, concrete and other rigid substrates.

• Select from four Stand-offs - 20 mm, 50 mm, 50x50 mm Tile and 50 mm C1583
• Environmentally sealed enclosure—weatherproof, dustproof and shockproof—meets or exceeds IP65
• Inexpensive, single-use dollies eliminate cleaning for re-use and can be kept as a permanent record
• Self-aligning aluminum dolly enables accurate measurements on smooth or uneven surfaces
• 10, 14, 20 or 50 mm dollies maximize capability and measurement resolution across a wide range of bond strengths
• Calibrated and certified to ± 1% accuracy using a NIST traceable load cell
• Certificate of Calibration showing traceability to NIST included (Long Form)
• Made in USA flag with black text below

Conforms to international standards including ASTM C1583/D4541/D7234, ISO 4624/16276-1, EN 1542/12004-2, AS/NZS 1580.408.5 and others

Adhesion is the ability for a coating such as paints and varnishes to adhere to a substrate termed as ‘substrate adhesion’ or the ability for a coating to adhere to multiple coats in the system which is termed ‘inter-coat adhesion’. For coatings to perform satisfactorily, they must adhere to the substrate on which they are applied including metal, concrete, wood, and more.

What is pull-off adhesion testing?
In accordance with ASTM D4541/D7234, ISO 4624, and others, adhesion testers evaluate the adhesion (pull-off strength) of a coating by determining the greatest tensile pull-off force that it can withstand before detaching. Breaking points, demonstrated by fractured surfaces, occur along the weakest plane within the system consisting of the dolly (loading fixture, pull stub), glue, coating layer(s), and the substrate.

The PosiTest AT series measures the force required to pull a specified test diameter of coating away from its substrate using hydraulic pressure.

Why is it necessary to test adhesion?
The goal of adhesion testing is to produce a coating failure. Coating adhesion is an indicator of how well the surface was prepared and how well the coating has bonded to the surface and/or additional coating layers. Testing adhesion offers a quantifiable method of determining if a paint or coating system is fit-for-purpose and ready to meet the quality demands of job specifications.

Features:

Simple

• Easily select dolly sizes, change measurement units, or store readings with the touch of a button
• Inexpensive, single-use dollies and plates eliminate cleaning for re-use and can be kept as a permanent record
• Each kit comes with everything needed for testing

Accurate

• Calibrated and certified to ± 1% accuracy using a NIST traceable load cell
• Certificate of Calibration showing traceability to NIST included
• Self-aligning dolly enables accurate measurements on smooth or uneven surfaces
• Conforms to national and international standards including ASTM C1583/ D4541/D7234, ISO 4624/16276-1, BS EN 12004-2, AS/NZS 1580.408.5, and others

Versatile

• Select from four stand-offs to suit nearly any application
• Internal memory stores maximum pull-off pressure, rate of pull, test duration, and dolly size
• 10 mm, 14 mm, 20 mm, 50 mm, 50 x 50 mm Tile, and 50 mm C1583 dollies maximize capability and measurement resolution across a wide range of bond strengths

Durable

• Environmentally sealed enclosure—weatherproof, dustproof and shockproof - meets or exceeds IP65
• Hard-shell carrying case included, with optional upgrade to a heavy-duty Pelican case (Automatic models only)
• Two year warranty

Powerful

• Sealed USB port for fast, simple connection to a PC
• Includes PosiSoft suite of software for viewing and reporting data

Literature:

• Specifications
• PosiTest AT-A Manual
• PosiTest AT-M Manual

Parts and Accessories:

• 50 mm C1583 Conversion Kit
• 50 mm x 50 mm Tile Conversion Kit
• 50 mm Conversion Kit
• 20 mm Conversion Kit
• Drilling Template for 50 mm Dollies
• Dollies
• Adhesive Kit

Packing List (All adhesion testers include everything needed for testing!):

Automatic adhesion testers: Automatic Adhesion Tester, built-in rechargeable NiMH battery with charger, dollies, abrasive pad, cutting tool, glue with mixing sticks and palettes, cotton swabs, USB cable, PosiSoft Software, instruction booklet, shoulder strap, Certificate of Calibration traceable to NIST, two-year warranty

Manual adhesion testers: Manual Adhesion Tester, 3 AAA batteries, dollies, abrasive pad, cutting tool, glue with mixing sticks and palettes, cotton swabs, USB cable, PosiSoft Software, instruction booklet, Certificate of Calibration traceable to NIST, two-year warranty, and a sturdy, lightweight carrying case