DeFelsko PosiTest® AT Pull-off Adhesion Testers

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, 50×50 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:

Parts and Accessories:

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