Just get 1/2 x 3/8 vinyl tubing for the 5cc tank. With the 5ml ones the black rubber stopper doesn't have a big enough hole for a tube but if you use a Dremel with the 115 High Speed Cutter / Model: 115 attachment to hollow it out it works great.
I ended up getting 5 BD 3ml syringes at the Walmart pharmacy for $1.00, supposed to be $0.23 each, but the pharmacist only charged me $0.20 each. I can get more whenever I need them, so no need to order a box of 100.
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