YSI TruLine 15 - Manual (Page 8)

8 T 814239 04/2014
Maintenance and cleaning TruLine
ing, the responding behavior becomes slower and the electrode slope and
asymmetry change. Moreover, extreme operating conditions can consider-
ably shorten the lifetime of the combination electrode. These are:
 Strong acids or lyes, hydrofluoric acid, organic solvents, oils, fats, bro-
mides, sulfides, iodides, proteins
 High temperatures
 High changes in pH and temperature.
The warranty does not cover failure caused by measuring conditions and
mechanical damage.
Refilling the
reference
electrolyte
Maintenance and cleaning
During operation, a small amount of reference electrolyte leaks through the
junction from the combination electrode into the test sample. If the level of ref-
erence electrolyte becomes too low with time, refill it through the refilling
opening. Refilling is very easy with the enclosed dropping bottle. Proceed as
follows:
 Cut off the tip of the dropping bottle at a right angle until the opening in the
tip can be seen
 Open the refilling opening of the combination electrode
 Press the tip of the dropping bottle into the refilling opening while turning
it slightly
 Pump the reference electrolyte in the shaft using the dropping bottle
 Pull the dropping bottle out of the refilling opening while turning it slightly
if necessary.