Xylem ISE Electrodes Na - Manual (Page 2)

Storage and maintenance
Electrodes should be stored at a temperature between
0°C and 40°C. Depending on the storage conditions
(temperature and air humidity) the irrigation fluid in the cap
may dry out prematurely. pNa electrodes stored dry must be
irrigated for minimum 24 hour in sodium chlorid solution
0.1 mol/l before measurement. Crystals in the electrolyte
area can be dissolved by warming the electrode in a water
bath. The electrolyte solution should then be replaced.
The correct potassium chlorid concentration must be
observed.
Quality
Every electrode must fulfill the strict quality requirements of
final testing. The working life depends mainly on the usage
conditions. Extreme measuring conditions as for example
high or frequently fluctuating temperatures, strong acids and
caustic solutions, protein and heavily contaminated
solutions, sulfides, bromides and iodides shorten the
electrode’s working life. Hydrofluoric acid, sodium hydroxide
and hot phosphoric acid attack glass.
Technical details Na 61
pNa range: 0 ... 6
Temperature range: -10 ... +80°C
Length: 170 mm
Sensor: Na sensitive glass
Diaphragm: platinum
Reference systeme: Silamid ®
Material: glass, d = 12 mm
Zero point: pNa = 2.0
Electrolyt: 3 M KCl
Irrigation fluid: 0.1 M NaCl
Connection cable: e.g. L 1 A
Temperature sensor: no
Order number
Combination electrode Na 61 285100026
Connection cable L1A 285122456
Electrolyte 3M KCl L 3008 285138505
Cleaning solution L 510 285138538
Further information
Further information can be found in the labratory catalogue
of SI Analytics GmbH.
Subject to technical amendment.
GA_pNa_us_T814047_090603