Writing Ink black for RIMIK Rainbow Ink Mixing Kit for Fountain Pen

50 ml writing ink in pure black. Suitable for use with our RIMIK mixing set.

Octopus Fluids® writing inks are exclusive inks with pleasant shading, low feathering, optimum drying time, fast writing characteristics and soft, smooth nib action.
With our Rainbow Ink Mixing Kit, you can mix your own personal writing ink.

And this is how it works:
The kit contains four writing inks in the basic colours cyan, magenta, yellow and black. The three basic colours cyan, magenta and yellow can be mixed together in different ratios. Depending on the mixture, you will get a different colour. To darken your new colour mixture, you can now carefully use the colour black.