MG Chemicals - 4140-400G 4140 Flux Remover for PC Boards, 400g (14 Oz) Aerosol Can

In my career, I'd used commercial/industrial flux remover available from my job. Now that I'm retired, my 'free' source was gone :-) but I wanted to continue to do electronics. Based on the MSDS sheet, this solvent is the closest to the commercial/industrial stuff, without the acetone. With no acetone, this flux remover is, in my experience, plastic-safe. If additional 'cutting' is required, I add a splash of acetone (nail polish remover) to get the job done. Very satisfied with the performance, easy to store, no objectionable smell, and inexpensive.

It cleans the soldering paste well but still needs brushing.

I've not used other flux removers, but I read the good reviews and can report that this stuff works really well. You will need a Q tip or something to help get the flux off, but very easy and effective.

Works great to remove rosin and no clean fluxes but you still need to use a lot to wash away the flux. If you just use a little you will just spread the flux around and leave a sticky mess. At first I thought the board had melted but in fact it was just the flux being dissolved and then spread around by my brush. Make sure to wipe or wash away the flux after the cleaner dissolves it, otherwise after the solvent evaporates it will leave the flux behind.

MG Chemicals makes some of the best products for electronic contact cleaner and circuit board repair.

This is one of the best flux removers I have used.Its also smells great (not that you should smell it).It makes short work of MG 835 rosin flux.Id definitely recommend getting a liter and decanting it in to a smaller jar for use on the bench.I like the push top alcohol dispensers.

I am a drone builder for 5+ years now and consider myself pretty good at soldering. I started off in the early days with using the solder wire with flux included until I realized that you really need to use a flux paste as well if you want good solid solder joints. Especially when changing out components and re-soldering joints. Once you use paste it can get messy and leave residue which will degrade your components over time. When I heard about solder cleaner I thought perfect! Until you start reading. Then you realize everyone has their own opinion on what to use and how to use it. From just using spray cleaners to mixing your own alcohol with nail polish remover and distilled water. Bleh. Problem with alcohol is if you have components that have silkscreen labeling, you will remove it. And for drone building, you do not want to lose the labeling because we are constantly switching out components and who wants to search for wiring schematics on the internet especially when manufacturers change things unexpectedly so hard to tell which version you have in the first place. So here is my real world experience. Use this pen. Coat the area thoroughly, then grab an old toothbrush and clean up the flux residue. My work looks beautiful afterwords and my silkscreen labeling is intact. Love this pen. Will order more because its so much more convenient and less messy to use it then anything else Ive seen on the market. Great product!

If you are needing to clean up your PCBs and your are currently using Iso 99%, a good flux remover is a must. Iso can clean up a board in a pinch and works ok on solvents, but doesn't actually remove most flux, it tends to just smear it around. I have been using this on TH and SMD, and have been happy with the results. I use Flux-Off spray as well, its a bit more convenient in some cases but it tends to get wasted and is more $$ compared to the MG brand.