CD 800 DIN,COMBINED CADMIUM ION SELECTIVE ELECTRODE, WITH 3.3 FT (1 M) CABLE, DIN PLUG, 0.01 TO 11,000 MG/L, REQUIRES ELY/BR/503 REF ERENCE ELECTROLYTE, IONIC STRENGTH ADAPTER ISA/FK STANDARD SOLUTIONS HAVE TO BE PREPARED FRESHLY. DELIVERY CONTAINS E 1 * 1 items