Thermo Scientific
ROSS Ultra, ROSS Ultra Triode and ROSS pH Electrodes
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Thermo Scientific Orion
Fill hole
ROSS
internal
reference
Fill
solution
chamber
Reference
junction
pH sensing
bulb
Fill hole
ROSS
internal
reference
Fill solution
chamber
Sure-Flow
reference
junction
pH sensing
bulb
ROSS Refillable Combination pH Electrode
Preparation for ROSS Sure-Flow Electrodes
1. Remove the shipping cap, sleeve or bottle from the sensing bulb
and save it for later storage of the electrode.
2. Clean any salt deposits from the exterior of the electrode by rinsing
it with distilled water.
3. Uncover the fill hole by removing the tape and add ROSS fill
solution, Cat. No. 810007, to the electrode up to the fill hole. To
maintain an adequate flow rate, the level of fill solution must always
be above the reference junction and at least one inch above the
sample level. The fill hole should remain open whenever the
electrode is in use.
4. Wet the junction by pressing down on the electrode cap to let a few
drops of the ROSS fill solution flow out of the electrode and then
replenish any lost fill solution.
5. Shake the electrode downward (similar to a clinical thermometer) to
remove any air bubbles.
6. Soak electrode in ROSS pH electrode storage solution, Cat.
No. 810001, or standard pH electrode storage solution, Cat.
No. 910001, for 30 to 60 minutes. For enhanced electrode
performance, use ROSS pH electrode storage solution.
7. Connect the electrode to the meter.
Fill hole
ROSS
internal
reference
Fill
solution
chamber
Reference
junction
pH sensing
bulb
Fill hole
ROSS
internal
reference
Fill solution
chamber
Sure-Flow
reference
junction
pH sensing
bulb
