same filter. just leave the needle and filter in the stopper of the recieving vial. As for the drawing pin, i open up a fresh alchohol schwab and put the pin on top (cap first before removing) when i take it off to attach filter.
when you attach filter to filled syringe after the first time, you will just pick up the recieving vial (with filter in top), turn it upside-down and screw it into the filled syringe. the stuff will not leak back out of the filter when you do this.
make sure to put an extra pin (i use a 25g so the stuff doesn't flow back out when i invert bottle) in the recieving vial. this will release pressure as you pump the filtered juice in.
any more q's drop me an e-mail.
later