It measures paper’s roughness and air permeability by air volume discharge through measuring head.

Measuring properties

• Air permeance [L/min or µm/Pa*s]
• Rroughness [L/min]
• Hardness or compressibility [L/min]

Measuring range:

• 0 - 300 ml/min (0 - 50,3 µm/Pa*s)
• 200 - 3000 mL/min (0 - 100,7 µm/Pa*s)

Measuring head for air permeability

• 10 cm³
• 5 cm³