Sensor Combinations
M62 [Ca2+, Cl-, K+, Na+, NH4+, NO3-]
M63 [Ca2+, Cl-, Mg2+, Na+, NH4+, NO3-]
M64 [Ca2+, Cl-, K+, Mg2+, NH4+, NO3-]
M67 [Ca2+, Mg2+, K+, Na+, NH4+, NO3-]
M68 [Ca2+, Cl-, K+, Na+, Mg2+, NO3-]
NPK2 [Ca2+, K+, Mg2+, NH4+, NO3-, PO43- ]