Mudcat Café message #3962030 The Mudcat Café TM
Thread #165247   Message #3962030
Posted By: Jack Campin
17-Nov-18 - 05:38 AM
Thread Name: BS: Long gone stationery supplies
Subject: RE: BS: Long gone stationery supplies
I have heard of those but never seen one.

The ickiest writing material I know of is indelible pencil - the "lead" was clay impregnated with purple dye, which got everywhere. The first job I was ever paid money for was counting votes in a local election, where voters were issued with indelible pencils to tick with. My hands ended up purple to the wrists for days.

They use an ink with somewhat similar (but less aggressive) properties in those medical pens for writing on people's skin ("irradiate this bit", "infection got this far by Tuesday" or grids for allergy patch tests).