sodium determination by direct potentiometry ... direct measurement the determination of sodium with the sodium ise is a selective ... from waste water up to urine for sodium determinations with the glass membrane ... be used for a longer period of time the sodium-selective glass electrode must be stored dry ... to be reactivated by immersing it in a sodiumchloride solution [cnacl 1 mol/l for ... each other perfectly the 6.0501.100 sodiumselective glass electrode left and the new 6.0508 ... limitations do not apply to our new sodium-selective electrode this new type of na ise is ... to the glass mem 2 ion-selective sodium electrodes ...