Xylem Sentix F 900-3 - Manual (Page 7)

SenTix Maintenance and cleaning
15 ba75844e02 04/2010
Maintenance and cleaning
Cleaning Remove water-soluble contamination by rinsing with deionized water. Other
types of contamination have to be removed as follows while the contact time
with the detergents should be kept as short as possible:
Note
Hydrofluoric acid, hot phosphoric acid and strong alkaline solutions destroy
the glass membrane.
After cleaning Rinse the electrode with deionized water and condition it in reference
electrolyte solution for at least 1 hour. Then recalibrate the electrode.
Wear parts and accessories
Note
Detailed information on our wide range of buffer solutions and more acces-
sories is given in the price list of the WTW catalog "Laboratory and field in-
strumentation".
Contamination Cleaning procedure
Fat and oil Rinse with water containing household wash-
ing-up liquid
Lime and hydroxide deposits Rinse with citric acid (10 % by weight)
Description Model Order no.
Reference electrolyte solution 250 ml
to fill the watering cap
(KCl 3 mol/l, Ag
+
-free)
KCl-250 109 705