Versaperm Vapour Permeability measurement


Fast accurate measurement of the World’s most damaging contaminant – and its most beneficial!

Versaperm Limited, a world leader in water vapour permeability is launching an entirely new instrument for the fast and accurate measurement of water vapour permeability – which is both the world’s most damaging contaminant and is a crucial measurement in understanding any sample’s physical characteristics. Water vapour is omnipresent and highly invasive. It can caused rugs to de-activate, equipment (even missiles) to fail, is the single most critical factor in the UK’s £3.5B paper industry and causes waste (especially food waste) on a massive scale.

The Versaperm WVTR (Water Vapour Transmission) MK VI meter is designed for use in the lab where its highly automated computerised control can cope with several samples at a time - and still give a reading in as little as 30 minutes for some materials. The conventionally gravimetric measurement technique takes several days and gives significantly less accurate / reproducible results.

Additionally the instrument can be configured to measure the diffusion rates of most gaseous elements (water, O2, CO2 etc). The MK VI needs very little re-calibration and requires, at most, minimal training to give results that can be accurate to better than one part per million (with some samples a few parts per hundred million). Sensitivities are typically in the range 0.05 - 3200g/m2/day.

A wide variety of options is available, depending on the specific applications, but both single and multi-sample systems, plus a range of measurement chambers and sensors can be supplied for testing samples from the size of a thimble up to a pallet load and beyond.

As well as vapour transmission, the equipment can be used to measure the Equilibrium Relative Humidity (ERH) of substances - that might otherwise be decomposed by normal water content measuring techniques.

The company also operates a laboratory service to measure permeability for companies where the volume or logistics of measurements does not demand a dedicated instrument.


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Please send any sales enquiries to Christopher Roberts, Versaperm Limited ,
10 Rawcliffe House, Howarth Road, Maidenhead, Berkshire, SL6 1AP, UK, tel: +44 1628 777668
e.mail Web:

For further Press Information please contact Gerry Palmer @ the Palmer & Rose Partnership. Tel 01494 637499, fax 0871 9003898,