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Payne - Permeability Cup

Payne - Permeability Cup
Payne - Permeability Cup
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Product Code : 683
Product Description

Payne - Permeability Cup

Features

  • Precision machining ensures exposure area / total film ratio of 0.4:1
  • Exposure surface: 10 cm² or 25 cm²
  • High grade anodized aluminium

This simple instrument allows reliable measurement of permeability to moisture of paints or similar coatings. It consists of aluminium cup, a ring and a screw cap.

After drying, a coated permeable backing material is cut out to form a disc and tightened by the cap/disc assembly onto the cup, containing 5 cm³ of distilled water.

The whole is weighed to 0.1 mg and placed into a dessicator at 38°C. Periodic weighing every 24 hours indicates the loss of water that has permeated through the film. It is recommended to run the test in triplicate, due to film imperfections.


NATIONAL ANALYTICAL CORPORATION
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