POLYMERIC MATERIALS INCORPORATING A PH INDICATOR DYE

摘要

The pH of a wound is assessed using a hydrogel film which changes colour in dependence upon pH. Suitably, the hydrogel film incorporates an indicator, across substantially its entire extent so that the film may be used to monitor pH across a wound. Wound pH information may be used to facilitate selection of the appropriate treatment to which the wound should be subjected. Suitably, the hydrogel film is incorporated into a dressing.