Octopus RIMIK Rainbow Ink Mixing Kit is a German-made fountain pen ink mixing kit for anyone who wants the little laboratory side of ink without needing to build the whole setup from scratch.
The kit includes colored base inks and empty bottles so you can create custom colors, keep notes on your formulas, and return to the shades that work. It is a lovely fit for a quiet desk experiment: a few drops, a test swatch, a note in the margin, and suddenly your ink shelf feels much more personal.
Mix in small batches, label what you make, and test each blend on paper before filling a favorite pen. As always with fountain pen inks, clean your pen regularly and do not let experimental mixtures dry out inside the feed.
Fountain pen ink mixing kit
Includes colored base inks and empty bottles for custom blends
