Meter can measure the water vapour permeability and transition rates of most materials and containers in as little as 30 minutes
Versaperm has produced a WVTR meter that can measure the water vapour permeability and transition rates of most materials and containers in as little as 30 minutes, as opposed to the days or weeks needed with conventional gravimetric techniques.
Sensitivities are in the range 0.05-3200g/m2/day and accuracy is claimed to be typically better than one part per million - and to be within a few parts per hundred million for some samples.
The WVTR meter can play an important role in most labs and QA facilities.
Water vapour is insidious and can cause more problems than most other things put together and it costs the UK over GBP100Mpa, says Versaperm.
It makes paper jam, products crumble, and electronics fail.
It can cause paints, adhesives and coatings to dry too slowly, or too quickly, it causes rust and leads to chemical, biological and physical changes.
Versaperm's WVTR meter can be used on huge range of materials and enclosures, from foil laminates to tubing and from paint to packaging, paper and even missiles, it says.
It can also provide measurements of substances that might otherwise be decomposed by normal water content measuring techniques.
The meter can cope with several samples at a time, is said to be simple to use, and gives a series of digital readouts that can be recorded or simply read off the LCD screen.
It needs no re-calibration and requires, at most, minimal training.
