
5
W
ARM
U
P
Every time the meter is turned on, the 5905/5010 BOD Probe
must be allowed to warm up for about 30 minutes before
taking the first reading. This allows the probe to use up all the
oxygen retained in the cap.
New Probe Break In (Motor Off)
E
LECTRODE
C
LEANING
- F
IGURE
3
The 5905/5010 should be cleaned only when erratic readings
occur or after about every 500 hours of use (two months).
Each cleaning removes material and reduces the life of the
probe, so excessive cleaning should be avoided.
Gold Cathode:
For correct probe operation, the gold cathode must be textured
properly. It can become tarnished or plated with silver after
extended use. The gold cathode can be cleaned by using the
adhesive backed sanding disc provided in the 5906 Membrane
Kit. Stick the disc to a small flat object, like a bottle cap, then
sand the gold with a twisting motion about 3 times or until all
silver deposits are removed and the gold appears to have a
For best results, please allow the probe more than the usual 30
minutes to warm-up after the first membrane is installed. The
process may be faster if the probe is allowed to warm up in a
BOD bottle filled with clean water. If possible, it’s a good idea
to let new probes warm-up over night (with a new membrane
and KCl) prior to their first use.
Содержание YSI 5010
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