PO₂ Electrodes Are Often Polished Using a Coarse Material Such

Multiple Choice

PO₂ electrodes are often polished using a coarse material such as pumice to:

A) Remove blood or protein debris.
B) Remove metal ions plated out on the platinum wire.
C) Refresh the sensitive quartz glass membrane.
D) Reduce the actual amount of O₂ reaching the electrode tip.