Yes I have used those. I actually ordered those from med lab for a long time and once and they accidentally sent me 18g pink 5 micron from a different company and i contacted them tnat they sent the wrong thing and gave me a refund and I tried to order it again and the same thing happened lol so I just been using the 18g 5 micron with a blunt tip but it still worksBD makes a non-coring 5 micron filter needle, it's still 19G but it won't fuck up your stoppers quite as badly. Manufacturer SKU 305200

