Refilling flushing liquid cartridges

A LOT bigger syringe with a larger needle is about the only way. Could rig up something with a tube to a larger bore needle that goes to a large jug and let gravity fill them. Stick the empty cart on the needle and set it below the larger jug of solution.

 

Yeaaah get a bigger syringre and it's a work done quick.
If you want it done real easy get a small liquid Pump.

 

used to fill these all the time with my homebrew cleaner. bigger syringe is all that really helps. you don't want to go too big of a needle, or chance ruining the seal.
trying to setup some contraption for an IV drip direct to machine is silly, just stick with what works and pour yourself a glass of the brown stuff if the task seems tedious.

 

your local chemist. anyone that supplies products for pool & commercial/industrial cleaners would have what you need in stock.
you can also order them individually online from amazon/homedepot/etc. in smaller quantities.
for my JV3 solvent inkjet, i was purchasing Acetone & Butyl Cellusolve by the gallons and mixing "hot"(surface) and "mild" (flushing) cleaning solutions for dimes on the dollar.
granted, this was for solvent ink.... so your cleaning solution for an aqueous printer may be a bit different, but the theory is the same: its all just simple ingredients.

 

i'd post links to previous threads, but from the picture it appears you're using Aqueous Inks and my homebrew research/recipe is for solvent. I was only here to chime-in that those cartridges are indeed refillable, abeit tedious.

if you do have a chemist in your area (google chemical supply oklahoma), however, I wouldn't put it past their ability to analyze a sample from your cleaning cartridge and suggest a formula for your own homebrew.
edited to add: worst case, you can always get cheaper cleaning cartridges/solutions from 3rd party ink suppliers.... as they've basically done the same thing, and then slapped their label on it. Cleaning cartridges don't have chips, so its the easiest thing for a 3rd party like SAM, Triangle, Bordeaux, etc. to replicate and supply for your printer.

 

we did that 2 or 3 years ago

a gallon of each was about the price of a quart of cleaning fluid at sherwin williams