Which part of the rubber stopper is used to measure out the 1 CC? Cause the top of it and the bottom of it is almost 1-2 cm difference which could make quite a difference of how much test you're getting, especially over an entire cycle.
I consider the part touching the oil to be the top because its closer to the top of the needle. So just to clarify, you're saying the part of the rubber stopper actually touching the oil is the part that needs to be at the 1 ml mark, right?
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