Found this listed by a Canadian seller on ebay and bought the last 36ml he had . He says it is usable for fountain pens but I am not sure if this is so .He bought an unopened container and broke it down and filtered it for selling . He was out of the larger size so I ended up buying 18 of the 2ml size . I will try it first ( not here yet ) with my John Holland retractable dip pen . Have any of ya'll ever tried this ink in a Fountain Pen ? I have several eyedroppers I would consider using it in . Did anyone else buy any of this batch and if so what do you think of it ?