VapoMeter

Practical and reliable TEWL, evaporation and permeability measurements

VapoMeter for all your TEWL and evaporation studies

Transepidermal water loss (TEWL) is a key indicator of the skin barrier function and the ability to measure this accurately is essential in a wide range of clinical and personal care applications.

The VapoMeter is wireless, fully portable and measurements are unaffected by the instrument’s orientation. Measurements take just a few seconds and accurate repeatable results are obtained at both high and low evaporation levels. A range of Franz cell adapters are available for in-vitro studies.

BENEFITS

Short measuring time, typically 10 seconds

No horizontally positioned measurement surface needed

Wide measurement range - accurate up to 300 g/m²h

Ready to use - no daily calibration required

Non-sensitive to ambient airflows disturbing reliable measurement

The VapoMeter has been widely used in a wide range of clinical studies and you will find several hundred journal articles on our website covering a large number of applications.

Closed chamber measurement principle

At the core of the VapoMeter is a humidity sensor mounted in a measurement chamber. The chamber is closed by the skin or other measurement surface during the measurement period and is unaffected by ambient airflows. The sensor monitors the increase of relative humidity (RH) inside the chamber during the measurement phase and the evaporation rate value (g/m²h) is automatically calculated from the RH increase. Ambient temperature and humidity are recorded using an external room sensor.

Technical details

Locate your nearest distributor

For further information on Delfin instruments please contact Delfin head office or one of our official representatives.

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