(c) Electrical conductivity meter measuring the conductivity of the KOH solution with mass concentration of 20 % and the HNO 3 solution with mass concentration of 70 %, coupled with a...

(c) Electrical conductivity meter measuring the conductivity of the KOH solution with mass concentration of 20 % and the HNO₃
solution with mass concentration of 70 %, coupled with a conductivity-electrical signal transmitter working in the range of 2 ⋅⋅⋅ 10 mA and the conductivity measurement in the domain of 0 S/cm ⋅⋅⋅ 0.8 S/cm.