sunsep™ uses a selective polymer membrane to move only water vapor from the wetter side to the drier side—no heaters or chillers. The result is stable, dry samples and simpler conditioning.

Key Features

  • Only water vapor permeates the membrane; analytes stay in the sample.
  • Works in drying or humidifying mode—just reverse which side is drier.
  • No power required: a humidity gradient drives the transfer.

sunsep™: How it works

The hollow fibers in the sunsep™ unit tend to equalize the humidity (moisture pressure) differential between the air (gas) inside the hollow fiber membrane and the air (gas) outside it, by moving moisture from the higher-humidity side to the lower-humidity side.

Because the membrane is nonporous, little more than moisture vapor can pass through it.

Principle of dehumidification

When wet air (gas) is supplied to the inside of the membrane and dry air (gas) is supplied outside the membrane, the moisture moves through the membrane to the drier air (gas) outside, producing dry air (gas).

Principle of humidification

When dry air (gas) is supplied to the inside of the membrane and moist air (gas) is supplied outside the membrane, the moisture moves through the membrane to the drier air (gas) inside, producing humidified air (gas).