For those purchasing this ink, you'll need to be diligent about cleaning and hope your pen doesn't dry out because these can be trickier than most inks. Amazon has a ton of these cheap ultrasonic jewelry cleaners that work perfect for cleaning fountain pens (especially ones that can't be disassembled). Here is an example: http://www.amazon.com/Professional-Ultrasonic-Jewelry-Eyeglass-Cleaning/dp/B001DKDAVW/Actually, these would make an excellent Massdrop option since they are clearly easily bulk ordered with whatever branding you want. "The official pen and jewelry cleaner for all you Massdrop purchases!"
BikeMrownOkay @BikeMrown, we're listening. Is this model especially good for pens? If you tell me what to look for, or suggest at least one more option, we can start a poll and get on this. Thanks!