I believe these vials are the ones used the videos below - seems pretty effective
The Type A1
Slightly wider than a test tube for easy transfer
https://www.ebay.com/itm/332281699373
and transferring to test tube setup
https://youtu.be/THMKwyUV86g?t=1m9s
Edited by CoolColJ, February 21 2018 - 10:49 PM.