MG Chemicals4140A-P Flux Remover Pen, 11.5mL,Clear

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.

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.

Great flux remover for PC boards, removes flux without damaging plastic parts. To other reviewers complaining of residue - I've noticed that some PCBs, especially cheap Chinese boards, often have some kind of coating which exhibit this problem. Not sure if it's the flux that they use or some other by-product of manufacture. The flux remover dissolves this coating and it precipitates out when the cleaner evaporates. There is nothing subtle about this process - it cakes in through holes and generally leaves quite a mess. Liberal application of flux cleaner will remove this residue. Note that I have not seen this on higher quality PCBs (including those fabricated via OSHPark, from SparkFun, and Adafruit). I've also noticed that this product sometimes removes soldermask and/or silkscreen from these same problematic boards - again, not an issue with higher quality boards.

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!

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.

I put my circuit boards in this, solder side down, for a minute and a half and this stuff eats all of the flux off of the board. It does not harm anything. But the flux is 100% gone. Board looks perfect when finished. This is a little expensive but for me it is worth it.

I guessing this is just alcohol, but nonetheless it does exactly what it is supposed to do.

J'ai vérifié le produit sur carte atari2600 et nettoie bien et propres 🤝👍🤗

Pour nettoyer circuit imprimé

Works great but left some oil-like dirt on the surface after it dried

Probably use it in a ventilated space. The warning on the can says it "may cause reproductive harm". Jokes on them, I'm saving a fortune on contraceptives now!