The University of Glasgow has created a pH sensor for soil testing that can be composted at the end of its life. It is an impedance-based sensor, using screen-printed interdigitated carbon-based ...

More information: Weiyu Xiao et al, Iridium oxide and cobalt hydroxide microfluidic-based potentiometric pH sensor, Microchimica Acta (2023). DOI: 10.1007/s00604-023-06035-z ...