CON-40 Comparison Update

Revisiting my CON-40 comparison post

I found an inexpensive milligram scale and decided a fun way to try it would be to check how much these converters draw, and also how much they can hold when syringe filled.

I filled the converter alone (no pen/feed/section/etc) with plain water to make sure that 1g=1mL and so it was easy to clean up. Though for most purposes at these volumes ink is probably close enough to water to still be in the ballpark, there wasn’t a compelling reason to use ink instead of water here.

Results:

Converter	Full	Draw	Draw %
CON-40	0.710mL	0.350mL	49.3%
Majohn A1	0.679mL	0.428mL	63.0%
Jinhao 10	0.673mL	0.350mL	52.0%

Unsurprisingly, CON-40 is the worst at filling (by total capacity %), and Majohn is the best.

I was surprised that the Jinhao converter holds less than the CON-40 overall, yet draws the same amount. It always seemed better than the CON-40, but it’s the same, or even arguably worse since it holds slightly less when filled as much as possible.

Now for some bonus measurements from other converters I had empty and handy, but these won’t fit in the same pens as the previous set.

Converter	Full	Draw	Draw %
WingSung 659	0.713mL	0.406mL	56.9%
CON-70	1.195mL	0.910mL	76.2%
CON-B	0.977mL	0.648mL	66.3%

CON-70 is the clear winner, but it doesn’t fit nearly as many pens. I probably could have got it even closer to 100% if I kept trying.

CON-B holds a lot, but it is annoying since it’s an opaque squeeze filler.

Imported from Mastodon