The top and bottom portions of your saline dispenser can be rotated in opposite directions to raise the internal plunger assembly. Grab the blue plunger after is has been rotated and exposed and pull it away from the outer black canister. You will see a blue cap and a small glass vial. The blue cap can be unscrewed from the top of the glass vial. Be careful when you remove the plunger assembly as the glass vial is fragile and can break if dropped. A small funnel or measuring cup can be inserted into the open top of the glass vial and the vial can be filled with saline, for example, eye contact solution or saline made by you.
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