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pipette pump

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pcm81:
I was using a 20ml pump on all om my pipettes and found it to be too coarse for careful and accurate pumping in 2ml pipettes. I bought a 2ml pump, SEOH PIPETTE PUMP 2ml Blue, and it has a shorter stroke, resulting in smaller volume than 20ml pump, but the stroke is of similar coarseness to the 20ml pump. Can someone suggest a good 2ml pump with a long stroke that will give me accurate pumping?

Thanks.

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