Item Tag: in the photo

The coordinates of the isopotential point: pHi = 4.25 pH, ei = -25 mV (CHIFR 4) pH = 7 pH, ei = -50 mV (CHIPHR 7) RNI = 10 pH, ei = -25 mV (CHIFR 10). Electrodes 5 pcs. glass industrial ESP-01-14 USSR.