If you use the Accu chek Combo pump look at the iHs way of dealing with the air bubble in the cartridges. Works a dream and will save you some hassle. Ive lost count over the amount of insulin Ive needed to prime to deal with trying to flush the bubble out of the cartridge and in to the tube. All the flicking and tapping the pump just made the bubbles worse until my OH figured out a good way....
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