A pH strip litmus test is a scientific tool to measure environmental and human health quality through visual colour gradation markers. The Litmus artwork is a reference to the pH strips of the litmus test as a tool for measuring and recording, consisting of numerous vertical markers with pH scale-based colour bandings. It reflects the local biodiversity and natural environments that surround the Carnes Hill Precinct’s parks, bushland and water systems. Litmus celebrates the diversity of the local community and its natural surroundings through signifier colours that resonate with different connective meanings based on cultural experience, spiritual belief, and symbols of identity. The public artwork was officially launched by Clr Wendy Waller, Mayor of Liverpool City on 3 December 2016.