MG Chemicals 99.9% Isopropyl Alcohol Electronics Cleaner, 475 mL Liquid Spray Bottle

In my search for cleaning rosin flux off circuit boards, I tried several aerosol and spray "flux cleaners" and 70-80% store-brand isopropyl alcohol. Everything just seemed to make an even bigger sticky mess that spread over the entire board, my hands, the table I was working on. Not happy. Then I tried this 99.9% isopropyl with a different thought / method. You HAVE TO BE OKAY with creating a mess first. So what I started doing was spraying the isopropyl on the board and using a toothbrush or acid brush to brush the solder joints. Then [and here's the trick] use a paper towl or lint-free Kimtech wipe to blot up the worst of the liquid/flux mixture before it dries. Instead of rubbing the paper towel or wiping across solder joints and having it shred to bits (also ensuring you'll slice into your fingers) -- wear some plastic gloves and "roll" the paper towel or Kimtech wipe across the pcb or blot it. You just want to quickly absorb the bulk of the liquid mess after brushing. So okay, you do this once and the board looks WORSE than when you started. Well, the trick is to not care about that. Just continue spraying the solder joints with the isopropyl, brushing and blotting with a new piece of paper towl or Kimtech wipe. After 3-4x quick cleanups, you'll start seeing a shiny board. It usually only takes 3-4x rounds to get most of the flux off the board. Just thought I'd save some people a ton of grief by mentioning what took me months or years to ultimately figure out. You'll drive yourself nuts if you think a single spray and brush of anything is going to remove flux from hundreds of solder points on a board in one shot. I'm sure naphtha is the preferred method by many for flux removal, but I don't like to mess with inhaling the fumes or take the chance of anything flammable -- plus I can't imagine that's good if you get it on your skin. For smaller boards I have an ultrasonic cleaner and that works well as long as the components can be submerged without damage, but for larger boards or components that can't be submerged, the isopropyl brush & blot method is my go-to. You just have to put yourself in a "zen state" of not caring what the board looks like and go through a few rounds isopropyl cleanup and you're done!

Works well. Dries with no residue.

Lo compre por equivocación, pensando que era para limpiar heridas, risulta de que es para equipos, pero resulta que mata ácaros. Cómo lo se lo rocíé sobre un tapete y funcionó.

I used this item with my crafting, it sprayed great, easy to use, durable, great price. Great product overall.

Good product, just too pricey for the amount, $17 for 16 oz. If I could've found alcohol at the 99 Cent Store, Walmart, Rite-Aid, or CVS, etc., I would not have paid this price. I feel that MG Chemicals is taking advantage of the supply chain that has been affected by the pandemic.

Mine was about two oz low. 475ml is about 16 oz, I got about 14 or so, the top inch and a half weren't filled. This stuff is definitely different than normal 70/30 alcohol. the immediate difference I found was when applying this to the screen on my phone, it dries in a way that my thumb moves over the screen very easily, where 70/30 allows my finger to have so much traction on the screen that I can actually lay it on my fingers screen side down and tip my hand downward and it won't fall off until it just rolls off the end of my fingers without having slid at all, at an angle of like 80 degrees or something. Doing swipes when that happens is basically impossible. You have to run your fingers through your hair to get some oil. It does have an unusually strong smell for people used to 70/30, but it is the same smell so if you don't mind 70/30 just be aware it's more of the same. If you use a bunch of 70/30 it'll be the same as a smaller amount of this in terms of the fumes. The spray bottle has a twisting nozzle, you can select to have a mist or a narrow jet. The off position works, you can't pull the trigger when the nozzle is turned to off, that says to me that it is sealing properly. I recommend turning it off every time you get done, it might prevent what is in the pump from evaporating at least for a good while. They say 99.9 will evaporate very quickly. I was afraid that meant it wouldn't stay on a rag long enough for me to apply it to anything, but it just isn't so. I actually wind up with too much for most applications even with a single full squeeze of the trigger, and have to go hunting for other things to wipe down with my microfiber cloth while it's still activated. I am satisfied.

I was originally going to write a good review or not write anything at all because this was my second bottle and it workes well for cleaning solder, however, I found out the hard way the spray bottle is completely unsealed. After being stored under my sink for two months, enough humidity seeped into the bottle that it is no longer anhydrous and can NOT be used for electronics cleaning or repair. Steps I did to ruin my screen: Applied a generous amount of isopropyl to keyboard and hinge to get all dust out, turn laptop to the side to let it all seep out, use q-tip to clean any leftover debris, wipe up extra isopropyl and let it dry. Turn on computer to find screen destroyed by water. Awesome! In the past I have done this with a new bottle and with bottles from other industrial brands (duda energy, etc) with no issues. I even put some teflon tape around the threads of bottle to avoid this exact issue but it happened anyway. Assume the spray mechanism allows air in the bottle. I think some of the isopropyl evaporates into your room too when using the spray cap. IDK maybe Im the dummy that should have been using a closed cap instead of the spray bottle cap. Still pretty pissed at the design and no warnings. I have another chemical spray bottle that is properly sealed so I guess my expectations were too high. Thanks for reading. For amazon: Smells like isopropyl, size is small as expected, quality of the bottle is awful because it lets humidity inside, value for money not great unless you store this in a drybox, performance sucks after you get water in it.

Eficaz contra circuitos eléctricos por agua

Incroyablement efficace !

Sehr gut gefällt mir ganz gut macht was es sein sollte Gutes Produkt

Good

I love these MG guys so far - I have had two difficult to source products from them delivered non-nonsense to my door. IPA (propan-2-ol to gie it it's proper UPAC name) is the most useful cleaning solvent for electronics on Planet Earth. It is one of God's greatest gifts to engineers. It is just agressive enough to remove a wide range of muck from your work / item / nuisance in the making / spectacles - for example excess flux or solder paste, semi-permanent marker, permanent labels / adhesive, finger print grease - without attacking the product itself. It is not conductive, so no short circuit risk and evaporates to nothing (sole exception - the coating on some cheap keyboards seems to go white if you clean with IPA. I do not want to know what they put on them). IPA used to be widely available but now is pretty difficult to get hold of. Some silly nonsense about it being highly flammable and liable to make you drunk / dead if you breath a lot of it in. MG to the rescue - they supply this essential fluid in good quantity and in a pump dispenser that is much more controllable and less wasteful than an aerosol. How about one for the environment guys? Collect the dispenser and reuse / refill them? That would make the product perfect.