SMTL are able to test the following characteristics of skin barriers for ostomy aids to BS ISO 12505-1:2014 - Skin barrier for ostomy aids - Test Methods. Part 1: Size, surface pH and water absorbency.

Water Absorbency

In this test, the sample under test is sectioned and applied to the base of the test cylinder. Saline solution is introduced into the cylinder and parafilm applied to form a closed system. The cylinder is pre-weighed and then incubated at 37°C. Following 6 hours incubation, the parafilm is removed and remnant fluid drained from the cylinder. The cylinder is then re-weighed to calculate the mass of fluid absorbed by the sample.

Surface pH

In this test, the sample under test is sectioned and fixed to the bottom of the petri dish. Saline solution is introduced into the petri dish until 1cm above the height of the sample. The petri dish is then incubated at 37°C. Following 4 hours incubation, the surface pH at the centre of the sample is measured.

If you wish to commission testing of your skin barrier, then contact the SMTL:

Surgical Materials Testing Laboratory, Princess of Wales Hospital, Coity Road, Bridgend, UK, CF31 1RQ.

Tel: +44 (0) 1656 752820
Email: physical@smtl.co.uk