pH is a critical measurement for both soil-based agriculture and water-based hydroponic applications. Unlike hydroponic applications, soil pH measurement requires methodologies that create slurries or “mud” samples. Both applications use pH measurements to determine mitigation strategies including fertilizer and nutrient needs. If soils or hydroponic solutions are outside the target pH range, it can severely affect plant growth, nutrient, and elemental absorption.
These challenges can be mitigated with the optimal sensor design, in particular the reference junction design, housing material, and sensing chemistry.