Instrument measures the rate at which water vapour flows through any material or coating - from paint to packaging, egg shells to enclosures and paper to pastry
Water vapour gets everywhere - especially where it isn't wanted.
It makes drugs degrade, paper curl, food spoil and is the bane of chemists and engineers everywhere.
It causes hundreds of millions of pounds of products to be wasted each year.
Versaperm has produced a fast, accurate and versatile laboratory instrument for measuring the rate at which it flows through any material or coating.
Versaperm says its equipment can test the permeability and ERH of a huge range of materials and enclosures - from paint to packaging, egg shells to enclosures and paper to pastry.
It can also provide measurements of substances that might otherwise be decomposed by normal water content measuring techniques.
The Versaperm WVT (water vapour transmission) meter can cope with several samples at a time and can give a reading in as little as 30 minutes - whereas the conventional gravimetric measurement technique takes several days and is significantly less accurate. The WVT meter is 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 to give results that are 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.
A wide range of variations is available, depending on the specific application, but both single and multi-sample systems and a wide range of chambers is available for testing samples the size of a section of thimble through to a 25 litre drum.
