Pye Ingold pH Electrode: in glass tube with lead

Experimental Chemistry

Pye Ingold pH Electrode: in glass tube with lead, and in original packing. Type 622, for 11530, 11535, 11085 and 11087

pH electrode for high temperatures (serial no. 1027/900). E.I.L.

Experimental Chemistry

pH electrode for high temperatures (serial no. 1027/900). E.I.L., Richmond, Surrey

Spear glass pH electrode

Experimental Chemistry

1960-1970

Spear glass pH electrode, type GS23, by Electronic Instruments Ltd., Richmond, Surrey, 1960-1970