We had these little plastic tips made to fit on to our slip leur syringes. We now package these with our refillable large format cartridges. We used to advise that the tip of the syringe be used to prime a cartridge by removing any excess air from the ink bag or removing air from the ink channel. Eventually, the size of the leur syringe wears out the seal on the carts. This priming tip is precisely the right size for the job!
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