General Questions

• Can I condition very low volumes of sample gas?

  With sunsep, sample gas or air can be conditioned at flow rates under 100ml/min.

  The single braid-reinforced hollow fiber membrane (OD 1.0 mm) of the SWT series makes it possible to dry or humidify gases at flow rates as low as 10ml/min, far lower than conventional systems than go. For more information, click here.

• Does my sunsep unit need access to electricity?

  sunsep series modules require no electrical connection.

  Drying or humidification is driven entirely by the humidity differential on either side of the membrane, making external power supply unnecessary. For more information, click here.

• Must the sample air or gas be pressurized for dehumidification?

  With sunsep, even low-pressure gases can be dehumidifed.

  The sunsep system does not force water molecules through the membrane with physical pressure. Rather, it makes use of the water vapor pressure differential on either side of the membrane. For this reason, even low-pressure air and gases can be dehumidifed. For more information, click here.

• Can you work with specifications that are not listed in your catalog?

  We are happy to accommodate custom orders and trial manufacturing requests.

  By increasing or decreasing the amount of hollow fiber membrane used, we can easily adjust the amount of sample gas treated. We also offer a variety of connector and module options. Please feel free to contact us with your special requests.

• Are there any gases that can’t be treated?

  Unfortunately, it is not possible to treat ammonia or organic solvents.

  sunsep will absorb ammonia, and organic solvents will cause the membrane polymers to swell and weaken. If you have questions about other gases, please free to contact us.

• How can we purchase sunsep products?

  We will put you in touch with a distributor in your area who will be happy to help you with your inquiry.

  Please feel free to contact us.

Questions about Dehumidifcation

• What types of gases can be dehumidified?

  A wide variety of moist gases and air can be treated.

  Compressed air, exhaust from factory smokestacks, atmospheric air, and exhaled air are among the many types of air/gas that can be dehumidified. For more information, click here.

• What are the advantages of membrane dryers compared to other types of dryers, such as freeze dryers or adsorbent dryers?

  Membrane dryers are small, easy to install, and require no maintenance.

  They need no power source and function simply by being connected to the sample gas tube. Because they are compact and don’t need to be oriented in any particular way, membrane dryers can be used in tight spaces. Further, with no consumables or moving parts, they require no maintenance. For more information, click here.

• Is it possible to dehumidify corrosive gases?

  sunsep excels at treating corrosive gases.

  The hollow fiber membranes are made from fluorinated polymers that are extremely resistant to corrosion. We have experience with many types of corrosive gases - for more information, click here.

• Can the compressed air model be used with gases other than air?

  Yes. The non-porous fluoropolymer membrane can be used with a wide variety of gases, including hydrogen, oxygen, various flammable gases, and more.

  The types of gases that can be treated vary depending on the components of the model used, so please let us know the specifics of your application.

Questions about Humidification

• What types of gases can be humidified?

  A wide variety of dry gases and air can be humidified at a wide range of flow rates and temperatures.

  For details, click here.

• What are the advantages of membrane humidifiers compared to traditional humidification methods such as bubbling or misting?

  Among the strengths of membrane humidification technology are the fact that the sample gas does not come into direct contact with water, and the fact that various volumes of gas can be treated.

  Gases are humidified through the membrane, preventing direct contact between the gas and liquid state water. Further, by controlling the amount of membrane used, it is possible to treat both very small flows (about 10ml/min) and very large flows (more than 1m3/min).For more information, click here.

• Is it true that sunsep can humidify without water?

  It is true.

  sunsep makes use of the humidity differential between the two sides of the membrane. If gas or air with a higher humidity level than the dry sample gas is supplied to the system, the sample gas will be humidified without an additional water source. For more information, click here.

• Can the gas be contaminated by impurities in the water used for humidification?

  Contamination is less of a concern with sunsep.

  sunsep membranes are non-porous. Particles, bacteria and viruses are blocked, making extremely clean humidification possible. For more information, click here.

If you have any additional questions, we would love to hear from you. Please submit your questions or inquiries here.