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P.A.T.T.I.® Adhesion Testers

Pneumatic Adhesion Tensile Testing Instrument


"The most accurate adhesion tester on the market!"


"Looking to improve your Adhesion Testing results?"

Read the following White Paper to learn more about our newest Patent-Pending Product (still in development)

We offer a full line of instruments to test the strength of coatings, adhesives, paints and inks.



    Quantum Analog



    Quantum Concrete


     Quantum Digital

    PATTI Micro

     PATTI Gold

The P.A.T.T.I.® system applies a true axial (relative to stub axis) tensile pull test. The tensile values obtained quantitatively measure the bond between a paint, film, coating or adhesive, and the substance substrate. The P.A.T.T.I.® conforms to ASTM D4541, “Pull Off Strength of Coatings Using Portable Adhesion Testers,” and is listed in Annex A.4 as the only self-aligning, pneumatic instrument. The surface to be tested can be smooth, rough, porous, flat or even curved and bond strengths of up to 10,000 psi can be tested with the P.A.T.T.I.® (using the F-20 piston). Advances in P.A.T.T.I.® technology have been mainly customer-driven, so custom applications are not only welcomed, but encouraged.

In a typical test, the first step is to properly attach a “pull-stub” to the test surface. Once the pull-stub epoxy has cured, a self-aligning piston is attached to the pull-stub (click on a model below for an illustration). The control module is supplied with pressurized gas and then connected to the piston via a hose. The user slowly increases the pressure to the piston until separation occurs between the pull-stub and the coating/test surface (or until some predetermined pressure is reached). The control module will indicate the maximum pressure applied to the piston, with or without pull-stub detachment. This burst pressure is then converted into tensile strength (psi) by consulting a table for the appropriate piston and pull-stub. It is recommended that at least three pull-tests are performed and statistically compared for a given surface before a definitive pull-off pressure is assumed.

Allows for testing in accordance with ASTM D4541 and listed in the standard (visit the ASTM website to obtain a copy of the standard.) Other standards are currently in development; check with us in the future for new P.A.T.T.I.® applications.


P.A.T.T.I.® Adhesion Testers

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