Permeation Accessory

The Micro-Chamber/Thermal Extractor permeation accessory is a removable, inert-coated stainless steel device that enables the measurement of volatiles permeating through a thin layer of material at ambient or elevated temperatures. Using multiple sorbent tubes allows the breakthrough/permeation to be plotted over time.

- Replicates real-world conditions to provide data on the migration of chemicals through materials.

- Easy to load into and remove from the μ-CTE device.

- Multiple permeation accessories can be used simultaneously.

- Available for high- and low-temperature µ-CTE models in inert-coated stainless steel.

Permeation mode is one of the three sampling modes possible with the Micro-Chamber/Thermal Extractor. To test the permeability of a material, a sample is stretched across the permeation accessory and secured. A small droplet of the test compound is then injected into a well at the bottom of the accessory. The complete assembly is placed inside one of the chambers, and clean air is passed over the surface of the stretched material. Permeation is then easily assessed by monitoring the air exiting each chamber using sorbent tubes and analysis by TD–GC–MS. O-Rings and septa are available as replacement parts and can be changed by the user.

Barrier materials are often used in protective clothing and product packaging to mitigate potentially harmful emissions. Typical applications include:

- Vehicle seat covers – to prevent VOCs from polyurethane foam from contaminating the car cabin air.

- Food packaging film – to prevent oxygen or VOCs from tainting foodstuffs.

- Protective gloves and masks – to protect against harmful chemicals, such as chemical warfare agents.

- Membranes in vehicle fuel systems – to prevent the loss of fuel vapor.

Humidifier Accessory

The use of humidified air/gas with the Micro-Chamber/Thermal Extractor allows for closer simulation of conditions used in certain reference tests and real-life scenarios. It also improves the recovery of some less-volatile polar compounds. The Humidifier Accessory meets this need by supplying air/gas at up to 50% relative humidity at room temperature.

- Supplies air or gas to the Micro-Chamber/Thermal Extractor at up to 50% relative humidity.

- Allows closer simulation of conditions used in reference tests.

- Enhances the recovery of some less-volatile polar compounds.

The Humidifier Accessory includes:

- Humidifier assembly, comprising: Bottle humidifier, check-valve, and rotameter (for flow rate control).

- Single regulator pneumatics accessory (U-GAS03) to control air/gas supply pressure.

- Hygrometer (for humidity measurement).

- Humidity measurement test chamber.

For further support, please contact:

COE team Email: info@transmed.com.vn Hotline: 0949 934 595