Pilot Blue is made in Japan and is a classic medium blue with medium shading and a pop of copper sheen in large swabs. It dries in 30 seconds in a medium nib on Rhodia and has an average flow. Slightly wet flow. Very well behaved. Cartridges will only fit in Pilot fountain pens.
Pilot Blue Black
Pilot fountain pen ink 70ml blue-black : Bottled Pen Ink : Office Products
Japan Pilot Ink-70 Carbon-free Ink Does Not Block The Nib 3 Colors Optional for Smooth Writing 70ml Student Stationery Ink - AliExpress
Pilot ink bottle 30ml Blue Black : Office Products
This is literally a bottle of ink. Pilot 350 ml blue black, with a Pilot Metropolitan for scale. : r/fountainpens
Pilot Ink Bottle Online Collection
Pilot Fountain Pen Ink Bottle - 70cc Blue
The lure of the bottle
Ink & Pen Notes: Pilot Custom 823 and Pilot Blue-Black Ink
70ml/Bottle of Japanese PILOT Fountain Pen Ink High Quality INK-70 Carbon Ink Liquid Non-clogging Pen Student Office Stationery
Japan PILOT Fountain Pen Ink INK-70 Non-carbon Ink Is Not Easy To Block The Tip 70ml Waterproof and Alcohol-resistant Stationery - AliExpress