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DeFelsko PosiTest AT-A Automatic Adhesion Tester with digital display, control buttons and connected hydraulic pull-off actuator.

Positest AT-A Automatic Adhesion Tester

This pull-off automatic adhesion tester is designed to precisely measure the adhesion of coatings to concrete, metal, wood, and other rigid substrates.

It has an electronically controlled hydraulic pump that applies pressure smoothly and continuously, giving you reliable and repeatable results in both lab and field environments. This greatly minimises user effort and the risk of influencing the pulling process.

With detailed analysis of up to five coating layers and a built-in rechargeable battery capable of performing over 250 tests per charge, it’s ideal for repetitive tests and large batches.

Two different models are available, with selectable pressure ranges for 20mm and 50mm dollies. All dollies are single-use and self-aligning, ensuring even, consistent pull-offs.

£2,290.91
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Data sheets

Benefits

  • Records the nature of fractures, and allows the generation of professional reports using the PosiSoft application.
  • User adjustable pull-off rate, pull time, and dwell time.
  • Rotating display for horizontal and vertical use.
  • Impact and scratch-resistant colour touch screen with keypad for operation with or without gloves.
  • Portable, lightweight design (5.5kg) means it can be easily transported to remote locations and operated in the field.
  • Reach difficult areas with 5 ft. (1.5 m) quality flex house.
  • Sealed enclosure resistant to dust, impacts, and weather (IP65).
  • Rubberised grips and self-aligning aluminium dollies provide a stable, skid-resistant footing for accurate measurements on smooth or irregular surfaces.
  • Self-aligning, quickcoupling secures dollies to actuator.
  • Internal memory stores maximum pull-off pressure, rate of pull, test duration, pressure vs. time data, dolly size, pass/fail, nature of fracture, and notes for 100,000 pulls in up to 1,000 batches.
  • Compatible with the PosiSoft App (iOS and Android) to add notes, photos, and generate PDF reports.
  • Bluetooth connection for data synchronisation and WiFi for updates and remote access.
  • USB-C port for fast charging and data transfer.
  • Selectable measurement units: psi, mPa, N/mm², or Newton.
  • Ensures compliance with international standards ASTM C1583, ASTM D4541, ISO 4624, EN 1542, EN 12004-2, and others.
  • Cutting tool for isolating test area.
  • Two year warranty.

How Does The Positest AT-A Automatic Tester work?

  1. Select the appropriate dolly and apply the adhesive.
  2. Place the PosiTest AT-A tester and run the automatic test.
  3. Observe the PASS/FAIL reading and record the fracture: cohesive, adhesive, or glue.
  4. Connect the unit to the software to store data and generate professional reports.

Which kit do I need?

20 mm Kit

  • Ideal for measuring higher bond strength coatings on metals.
  • Can be used with optional 10 and 14 mm dollies.
  • Includes 20 mm aluminum dollies (20), 20 mm cutting tool, and 20 mm stand-off.

50 mm Kit

  • Ideal for measuring lower bond strength coatings on wood, concrete, and plastic.
  • Includes 50 mm aluminum dollies (8), 50 mm cutting tool, and 50 mm stand-off.

Suitable Applications & Materials

The Positest At-A Automatic Adhesion Tester works on concrete, metal, plastic, wood, and cementitious adhesives, including multi-layer coatings. It’s ideal for:

  • Advanced fracture analysis.
  • Digital report generation.
  • Repetitive tests and big batches.