What probe type do I have
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- ...