Robert Oster Ruby ink

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 Ruby was given to me by Mmg112 – thanks!

I believe Ruby is a special release for the Sakura Fountain Pen Gallery in Belgium but I’m not 100 % sure. The color of this ink is acceptable although lack of good lubrication and average flow won’t make me buy a bottle. It’s average ink. Personally I think you’ll easily find more interesting red inks on the market.

Flow: average.

Saturation: average

Lubrication: average

Drying time: rather reasonable. 10-15 seconds on Rhodia, 5 –  10 seconds on absorbent paper.

Clogging issues: None experienced. The ink may dry in the nib but only after few minutes. You can leave the pen uncapped for 2-3 minutes and everything should be fine.

Feathering: some experienced on Moleskine.

Bleedthrough: almost none.

Water resistance: this ink isn’t water resistant.

Drops of ink on kitchen towel

Software ID

Color range

Rhodia, Jinhao x750, medium nib

Leuchtturm 1917, Jinhao x750, medium nib

Moleskine, TWSBI 580, M

Linen paper, TWSBI 580, medium

Water resistance

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