BR42 Calomel Reference Electrode pH/O.R.P. reference electrode, glass body, ceramic junction, Calomel.
BR43 Mercurous Sulphate Reference Electrode Redox reference electrode (silverometry), glass body, ceramic junction, mercurous sulphate.
BR44 Double junction reference electrode Redox reference electrode (silverometry), glass body, double junction, Ag/AgCl.
BRV1 Combination electrode for pH pH combination electrode, glass body, ceramic junction, spherical tip.
BRV4 pH micro combination electrode pH combination electrode for small samples, glass body, ceramic junction, micro tip (6.5 mm).