To measure the vapour permeability of flat samples they are usually
clamped between two halves of a diffusion chamber.Versaperm
instruments are unique in their ability to accommodate materials
up to approximately 50 mm in thickness in standard mode. Although
this is significantly more than most sample
holder designs, in fact it is only a limitation in standard mode,
and for some applications, the chamber has been modified to accommodate
much thicker samples.
There are two common chamber sizes, 1/200 m² and 1/1000 m², which can accommodate samples of about 100mmx100mm and 30mmx30mm. Resolution is higher with larger surface areas. Samples should ideally be larger than the minimum to ease handling.
To test different samples against different sample types against different vapours and gases we have developed a wide range of sensor options to measure the vapour permeability accurately and quickly.
Vapour permeability sensors
|Catalytic Combustion||Hydrogen||Pressure Measurements|
|Flame Ionization||Mass Spectrometer||Water Vapour|
We are currently unable to use radioactive or highly toxic gases. However, please call to discuss your application.
Some of the many sample types we can test in our permeability testing laboratory
|Blister Packs||Laboratory||Plastics and Rubber|
|Building Materials||Leaks and Seals||Quality Control|
|Business waste||MAP (Modified Atmosphere Packaging)||Sachets an Powders|
|Electronics||Mastics and Adhesives||Textiles|
|Freezer Burn||O Rings|
Foils and sachets