Foam Verification Kit – 14028-4

An apparatus to quickly verify the maximum pore diameter and permeability of Mott diffusers (Cylindrical Metal Diffuser and Tube (14023-0)) and Norton stones (Spherical Diffuser and Tube (14021-0)).

For use with the SetaFoam Dual Twin Foam Test Baths (14020-8).


  • Verifies maximum pore diameter and permeability of diffusers
  • Suitable for Mott Diffusers and Norton Stones

Comprising an air pump, a test selector valve, two air control regulators, glassware, digital manometer, and a flowmeter, all mounted on a chassis with the necessary manifolds and interconnecting tubes.

For pore diameter verification the test selector valve directs air via the 'porosity' air control regulator to the diffuser/stone, which is immersed in water in a 250 ml glass measuring cylinder. The digital manometer reads the air pressure required for a bubble to appear at the diffuser/stone.

During permeability verification, the test selector valve directs air via the 'permeability' air control valve to the diffuser/stone which is in a 250 ml Buchner flask, the outlet of which is connected to the flowmeter. The flowmeter shows the airflow when the digital manometer shows a specified air pressure upstream of the diffuser/stone.

Supplied with:
Air pump
All necessary tubing
Mains lead
Instruction manual


VOLTAGE 110/125 V, 50/60 Hz 220/240 V, 50/60 Hz
SIZE (HXWXD) 60 x 45 x 28 cm
WEIGHT 8.6 kg
CCCN CODE Tariff 90269000


Digital Stopwatch - 22750-3

Flowmeter - 14028-204

Cylinder 250 ml - 14028-203

Flask 250 ml - 14028-202

Silicone Rubber Tube 5 meters - 16720-002

Digital Manometer - 14028-201