Permeability testing of Flat Samples
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 gasses we have developed a wide range of sensor options to measure the vapour permeability accurately and quickly.
Vapour permeability sensors
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
Foils and sachets