Left: Artwork by Isabella Young titled 20th April 2020, pH 7.1, 5.4 mm, 2020 exhibited at Whitecliffe College of Arts and Design, Tāmaki Makaurau, Auckland, Aotearoa, New Zealand. Right: Artwork by Isabella Young titled 3rd May 2020, pH 6.7, 1.6 mm, 2020. Detail shot; showing the backing of the canvas frame, mount fixtures and pH indication strip (of Bromothymol blue drops).