The Inkvent Purple range is a set of 25 special edition inks originally created for the 2023 'Inkvent' calendar, in individual 50ml bottles - that's a lot of ink - with little feet! They're in Inkymole-designed packaging
 
These inks are vivid and well pigmented, and if you want to see them in action, visit my Inkvent page where you can see this collection, and previous collections, being put robustly through their paces.
(Please note colours will vary a bit from what you see on screen, due to the limitations of screen and camera lens!)
 
They're made by Diamine in England, my partners-in-ink for over 10 years. I design their packaging for them, and you can see some of that work on these boxes. Inkmakers since 1864, their ink is among the finest in the world, suitable for use with brushes, sticks, nibs, parallel pens, fingers, and safe to use in all types of fountain pen, including the Shimmer, Sheening, Scented and Chameleon ones (but do give your pen a rinse after use, to be on the safe side). 
 
All the inks are water-based, acid-free, non-toxic and vegan, containing no animal ingredients.