Sit back and relax as Brian goes on one of his signature deep dives down the rabbit hole of celluloid - an often-mysterious fountain pen material that can have a complicated relationship with certain types of ink. Originally from Goulet Pencast Episode 37: https://www.youtube.com/watch?v=TLitGW56ziU Listen to The Goulet Pencast here: https://gouletpencast.fireside.fm/ SUBSCRIBE to our YouTube channel: http://bit.ly/GP-YTsubscribe TIMESTAMPS: 00:00 The Question 00:38 Context 02:33 Brian's quick answer 03:00 Brian's long answer 04:54 Visconti celluloids 07:15 Cellulose habits 10:00 PH, dye factors, ink brands 14:30 Brian's conclusions ABOUT GOULET PENS: Brian & Rachel Goulet started The Goulet Pen Company in 2009 and you can see the evolution of our mom and pop into a full-blown company through this channel. We run a dedicated online store with fountain pens, ink, paper, and other fine writing accessories. Our goal with this channel is to provide fountain pen fans at all levels of experience with comprehensive product reviews, round ups, and how-to videos to answer all the fountain pen questions you may have. Shop at https://www.gouletpens.com/. FOLLOW US: Instagram: https://www.instagram.com/gouletpens/ Facebook: https://www.facebook.com/TheGouletPenCompany Twitter: https://twitter.com/gouletpens Pinterest: https://www.pinterest.com/gouletpens/ Sign up for Emails: http://shop.gouletpens.com/newsletter Blog: https://blog.gouletpens.com/