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Bloch GmbH (En)

PosiTest® Pull-Off Adhesion Test

PosiTest® Pull-Off Adhesion Test

 

PosiTest

The PosiTest pull-off adhesion testers measure paint adhesion on metal, wood and other rigid substrates. This easy-to-use, reliable and versatile instrument uses hydraulic pressure and a revolutionary self-aligning dolly to ensure uniform pull distribution over the surface being tested, preventing a one-sided pull-off. PosiTest_Dolly

This is done using a ring of small ball bearings to engage the articulating dolly head.

 

There are two models available.:

  • PosiTest AT manual version

PosiTest AT

  • PosiTest AT-A Automatik with an electronically controlled hydraulic pump

PosiTest AT-A 20 Automatik

The automatic model has a electronically controlled hydraulic pump that applies continuous pressure. The pull-off rate is userselectable. Simple push button operation, eliminates the need to close values or reset scales. A rechargeable NiMH battery is built-in providing up to 200 tests per charge. A universal AC Adapter is supplied. The Model ATA-20 has a high resolution screen, a wireless connection to a smart device, and records the nature of the failure: cohesion, adhesion, or glue failure.

Both models have the following features:

  • Portable, hand-operated instrument can be used in any position and requires no external power source-ideal for the lab and on-site
  • Large scale reads clearly and easily in PSI and MPa
  • Inexpensive, single-use dollies eliminate the need for heating, cleaning, or brushing for re-use
  • Self-aligning dolly enables measurement on smooth or uneven surfaces without adversely affecting the test results.
  • Heavy-duty hydraulic pump with safety valve helps prevent damage to pressure system
  • Quick-coupling makes securing dollies in actuator simple, fast and trouble-free
  • Multi-purpose, high-tensile two-part adhesive suitable for use with a wide variety of coatings and coating thicknesses
  • Cutting tool for isolating test area is included
  • Coating adhesion tester pressure system is calibrated and certified to ±1 % accuracy (full-scale)
  • Internal memory stores up to 200 pulls. This includes maximum pull-off pressure, rate of pull, test duration, and dolly size
  • Optional PosiSoft software available to upload test results
  • USB Port PC interface
  • 10, 14, 20, and 50mm dollies to maximize the measurement resolution and test range,
  • two-year warranty

Standards:

ASTM D4541 D7234
ISO 4624 16276-1