Robert Oster is new player in fountain pen ink market. He operates through retailers worldwide. The inks are sold in 50 ml PET bottles with a tightly secure twist cap. I don’t know who makes the inks for the shop, but the colors look interesting and fresh. At the moment Robert Oster inks are available in billion colors – I lost track how many.
Sample of Graphite was given to me by Mmg112 – thanks!
The ink is rather nice and quite interesting – it’s slightly green-blue dark grey. Not easy to describe, to be honest. There’s also some muted red sheen.
Flow: good and it comes out of the pen decently wet
Lubrication: the ink is well lubricated with a smooth feel on the page
Drying time: Not so short. 20-25 seconds on Rhodia, 15- 20 seconds on absorbent paper.
Clogging issues: None experienced.
Feathering: some experienced on Moleskine.
Bleedthrough: almost none.
Water resistance: this ink isn’t water resistant.
Drops of ink on kitchen towel
Maruman, Hero 5028, stub 1.9
Leuchtturm 1917, Jinhao x750, medium nib
CIAK, Hero 5028, stub 1.9