PosiTest AT-M

The PosiTest AT-M Manual Adhesion Tester by DeFelsko Measures the force required to pull a specified test diameter of coating away from its substrate using hydraulic pressure.


  • Manual hydraulic pump designed to apply smooth and continuous pressure with a single stroke
  • Pull Rate Indicator to manually monitor and adjust the rate of pull
  • Environmentally sealed enclosure – weatherproof, dustproof and shockproof – meets or exceeds IP65
  • 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
  • Every PosiTest Adhesion Tester pressure system is calibrated and certified to ± 1% accuracy using a NIST traceable load cell
  • Internal memory stores maximum pull-off pressure, pull rate, test duration and dolly size for up to 200 pulls
  • Compatible with PosiSoft desktop software for viewing, printing and storing measurement data
  • Conforms to international standards including ASTM D4541/D7234, ISO 4624/16276-1, AS/NZS 1580.408.5 and others

Adhesion testers include everything needed for testing: dollies, abrasive pad, cutting tool, glue with mixing sticks and palettes, cotton swabs, USB cable, PosiSoft Software, instruction booklet and video, Certificate of Calibration traceable to NIST, 2 year warranty, and a sturdy, lightweight carrying case

* Optional 20mm/50mm/50 mm C1583/50 mm Tile Conversion Kits allow each model to be used with alternative dolly sizes. Custom 10 and 14 mm dollies are available for special applications (compatible with 20 mm stand off).

Conforms to international standards including ASTM C1583/D4541/D7234/D7522, ISO 4624/16276-1, BS EN 12004-2, AS/NZS 1580.408.5 and others

4 Manual Models Available 

LCD Display

With an environmentally sealed, metal enclosure, heavy duty hydraulic pump and a hi-grade industrial pressure sensor, both the Manual and Automatic PosiTest AT are built to last and can be used indoors and outdoors in all types of weather.

PosiTest AT-M

Manual Adhesion Tester Models

Helpful Adhesion Testing Videos

Please view our helpful instructional videos on the DeFelsko PosiTest Adhesion Testers

Pull-Off Adhesion Testing 3:10

This is a very useful instructional video for the the pull off adhesion tester

Manual Adhesion Tester 9:29

Instructional video for the PosiTest AT-M Manual Adhesion Tester

Auto Adhesion Tester 0:24

A short video clip of the PosiTest AT Automatic Adhesion Tester

Find out more about the PosiTest AT-M and all the features that come with it


Find useful instruction manuals and quick guides for the PosiTest AT-M


You will discover some really helpful frequently asked questions here and may find the answer to your query

PosiSoft Software

Learn about the DeFelsko PosiSoft software to assist with your coating thickness gauge


All the useful accessories to accompany your PosiTest AT-M can be found here.
PosiTest AT Automatic Prices
Manual Adhesion Tester Options

Hire Available

The PosiTest AT-M Manual Adhesion Tester is available to hire. Please get in touch for more info.

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