Permeability cups are designed to determine the water vapour transmission of paints, varnishes, coatings and related products. Permeability cup is suitable for testing both self-supporting coating and non-self-supporting coatings.

• Anodised aluminium for corrosion resistance and colouring
• Seal ring to prevent turning when closing the cover
• Any deformation to the cup may cause deviation in the result

The wet cup method is the reference for determining water vapour transmission.