Thermo Fisher Scientific CyberScan DO 110 - Manual (Page 53)

Instruction Manual CyberScan DO 110
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14. Replace probe guard.
15. Calibrate the probe (see section 4) after the % saturation readings have
stabilised.
Note: Membranes can only be used once. When a membrane cap is
screwed onto the probe, the membrane is stretched by the cathode. If the
same O-ring and the membrane is used a second time it will not fit
perfectly onto the cathode. This will result in erratic readings.
10.5 Electrolyte Solution
The electrolyte solution in your probe’s cap will deplete on usage and will need to be
replaced periodically.
Your new DO probe comes with accessories of one replacement electrolyte solution
and a spare membrane cap. The replacement electrolyte comes premixed and ready
to use. To order more electrolyte solution, see “Accessories” section.