No syringes with needles here in Oregon, as far as I know. Too much heroin use in the past for that.
PE - you are certainly right about different pumps have to be matched with different tube diameters, thickness, and flexability. The tubes I listed to are used in a large number of analytical lab pumps and are often found used for sale.
I think it shows that one pump may not be able to fill every emulsion makers needs, depending on the flow rate needed.