As I was writing my diary in mother-in-law's garden, the Mrs accidentally squirted water onto my book. Which settles the debate whether or not waterproof ink is worth the trouble, at least for me. The purple part of R&K Scabiosa (an iron gall ink) came up and went but the dark iron gall part didn't budge even where the ink had just dried.
#FountainPens #ink #IronGallInk #WaterproofInk