MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY
This sensor is being used to record pH levels in an experiment involving plants (in background). The sensor will be placed in the soil or water to measure the concentration of hydrogen ions. This will indicate the relative acidity or alkalinity of the environment in which the plants are growing. The readings are being transmitted down the wiring (upper right) and recorded using a datalogger (not seen).
Model release not required. Property release not required.