MG Chemicals 4140A Flux Remover for PC Boards, 1 Quart Bottle

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.

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

The spray can came with a plastic straw which was supposed to fit in the nozzle. I could not get it to fit but did not matter.I found the best way to use it is to give the board several sprays then let it dry. It leaves a white powdery residue around the through hole solder connections. This is easy to remove with a toothbrush. The stuff is just organic solvents which should not leave a residue on evaporation. I wonder if they are dissolving something on the PCB board.... In any event, it seems to work OK.

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.

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.

Surprisingly worked on a pcb that had some residue. It was still sticky but at least it didn’t have that glob. It didn’t take too much effort to clean off but did use a good amount of solution.

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.