Laboratory (R&D) Permeability measurements

 

For sensitive Water Vapour, Hydrocarbon, O₂, N₂, He (and other), vapour permeability testing in the QC or R&D laboratory Our new permeability meter allows your Laboratory to measure the vapour permeability for a wide range of gases, including O₂, N₂, He, Hydrocarbons gases and water vapour.

The equipment quickly and reliably measures the permeability and diffusive flow of vapours across samples, finished packages, seals, containers, flat samples, equipment etc.

Our permeability meter needs no re-calibration and requires, at most, minimal training to give results that can be as accurate to better than one part per million (with some samples a few parts per hundred million).  Sensitivities are in the range 0.05 – 3200g/m²/day depending on the gas, material under test and sensor used.

Its computerised control makes it simple to operate. Additionally we offer a comprehensive permeability laboratory testing service for permeability measurements

Comparison of Typical WVTR’s

Material	Relative Permeability*
Cold Form Foil	0
CTFE	0.02
COC	0.24-0.29
Polychlorotrifuoroethylene (PCTFE or Aclar)	0.16
Polyvinylidene chloride (PVDC or saran)	0.2
High-density polyethylene (HDPE)	1.2
Polypropylene (PP)	1.6
Good Vapour Barrier materials
Polyethylene terephthalate (PET)	5.2
Low-density polyethylene (LDPE)	4.8
Low vapour-barrier materials
Polyvinyl choride PVC	16
Acrylonitrile copolymer (Barex)	20
Polyamide (PA or Nylon)	100

*Best Vapour-barrier materials Relative Permeability based on Polyamide at 100%