4140A Flux Remover for PC Boards (Improved Formulation) 945 mL Liquid

Works well

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.

I've used this stuff for a little while now and it does the trick. On the downside, it's a big bottle, requiring a smaller vessel in which to put it so it's more convenient. Not sure of the shelf life of an opened bottle is though,so I may end up losing some if it's effectiveness is diminished over time

It effectively removes flux more efficiently than isopropyl alcohol. It's my preferred choice of chemicals when I want to avoid immersing the PCB in the ultrasonic bath. Additionally, it's less toxic compared to some other rosin removers.

I wiped flux all over a controller board and used a paper towel to wipe off what I could, then I used IPA 91% and kimtech wipes and it came off super clean. Then I poured some into a small plastic kitchen container I bought for my ultrasonic machine, and it came out great. Had a bit of a shine to it, so I tested and there was a film, I put it in a rinse bath of warm distilled water and it looked like a brand new board.