1) Remove the DO membrane cap and discard the old membrane by pulling up on the cap.
2) Empty the old electrolyte solution and refill with a fresh supply. Take care to not
introduce any air bubbles. Fill the cell as full as possible, creating a large droplet on the
surface.
3) Select a membrane, handling only on the corners. Gently place the membrane on top of
the dissolved oxygen electrolyte, taking care to prevent air bubbles from being trapped
underneath. If there is an air bubble, remove the membrane, top off with more DO
electrolyte, and replace the membrane. Place the DO membrane cap over the DO cell.
Make sure the o-ring inside the cap is at the top. This o-ring will grab the membrane and
stretch it uniformly.
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