Product category:
Materials Testing
News Release from: Versaperm | Subject: Versaperm WVTR
Edited by the Manufacturingtalk Editorial
Team on 16 September 2005
Fast accurate measurement of water
permeability
Versaperm has launched a new instrument for the fast and accurate measurement of water vapour permeability.
Versaperm, a world leader in water vapour permeability is launching an entirely new instrument for the fast and accurate measurement of water vapour permeability Water is both the world's most damaging contaminant and is often the crucial factor in QC measurements
This article was originally published on Manufacturingtalk on 10 Mar 2005 at 8.00am (UK)
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The Versaperm WVTR meter can measure most materials and containers often in as little as 30 minutes as opposed to the days or weeks needed with conventional gravimetric techniques.
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In addition, the instrument can measure permeability for most gaseous elements.
Water vapour is omnipresent and highly invasive.
Problems in this area costs the UK alone considerably over £100M every year.
The Versaperm WVTR (Water Vapour Transmission) MK VI meters' 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.
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.
Also the instrument can be configured to measure the diffusion rates of most gaseous elements (water, O2, CO2 etc).
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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