Allergen Barrier Test with Airflow (Ref SP304)

To prove the effectiveness of a fabric, zipper or seam as a barrier to the passage of indoor allergen.

Test Description
House Dust with a known concentration of allergen is pulled across the fabric, zipper or seam with the use of controlled air pressure. A filter located downstream collects any allergen that passes through. The amount recovered on the filter is extracted and quantified using an ELISA kit specific for the type of allergen being measured.

Customer Benefit
The data generated by this test allows manufacturers and retailers to directly claim the ability of a fabric, zipper or seam to block a number of allergens. This test is important because there is a tendency to rely on pore size and thread count to demonstrate a fabric’s ability to block allergens. This can be very misleading. Pore size only loosely correlates with allergen filtration efficacy and there are a number of factors that contribute to this. A high thread count fabric may also be poorly constructed, allowing the passage of allergens.

Third Party Validation
On passing this test, the fabric can be labelled as having been tested by airmid in support of any claim relating to the test and data received.

Sample Required
1 square metre of fabric

Turnaround Time
15 working days from receipt of sample



ILAC-MRAairmid healthgroup ltd. is an INAB accredited laboratory Reg No. 284T for Derp1 and Feld1 ELISA testing, the SP304 process is not under the scope of accreditation.

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airmid Health Related Claim Validation Services for Textiles

Textiles Informational PDF