The AT-M model uses a manual hydraulic mechanism to apply smooth and continuous pull-off pressure in a single stroke. Equipped with interchangeable dollies (10, 14, 20, 50 mm, 50×50 mm Tile, and 50 mm C1583), it allows measurement across a wide range of bond strengths. Data such as pull-off pressure, pull rate, test duration, and dolly size are stored internally (up to 200 readings). It adheres to international standards like ASTM D4541, ISO 4624, etc.

DeFelsko PosiTest AT-M Manual Adhesion Tester

Need dependable adhesion testing you can take anywhere? The AT-M does just that. It’s sealed for rugged conditions, uses easy-swap dollies to adapt to job demands, and stores results so you don’t lose track. With ±1% accuracy and standardized compliance, it gives your coatings lab or field work confidence that every test counts.

Features

Manual Hydraulic Pump

Applies smooth, continuous pull-off pressure with one-stroke manual operation—no need for external power.

Self-Aligning Dollies (Various Sizes)

Dollies (10, 14, 20, 50 mm, etc.) accommodate different bond strengths and surface types; the self-aligning design ensures force is distributed evenly—even on uneven surfaces.

IP65 Sealed Enclosure

Weatherproof, dustproof, and shock-resistant housing ensures instrument durability in harsh environments.

Memory Storage & Data Logging

Stores up to 200 pulls: pressure, pull rate, duration, and dolly size. Data can be exported via USB and managed via PosiSoft software.

Accuracy & Standards Compliance

Certified ±1% accuracy using NIST-traceable load cell; conforms to standards like ASTM D4541, ISO 4624, EN, etc.

Overview

Specification Item	Unit	Typical Value / Range
Dolly Sizes Available	mm	10, 14, 20, 50; also 50×50 mm tile, 50 mm C1583
Pull-Off Strength Range (20 mm Dolly)	MPa / psi	0.7 to 20 MPa / 100 to 3000 psi
Pull-Off Strength Range (50 mm Dolly)	MPa / psi	0.1 to ~3.3 MPa / 16 to ~480 psi
Accuracy	% full scale	±1%
Memory Capacity	readings	Up to 200 pulls stored internally
Power	type / battery life	2 × AAA batteries; ~16 hours usage
Standards / Conformance	—	ASTM D4541, ISO 4624, EN 1542 / 12004-2, Fneu etc.