MG Chemicals - 835-1L Liquid Rosin Flux, for Leaded and Lead Free Solder, 1 Liter Bottle

Allow me to introduce myself. I am an emergency room critical care physician, I also wear many other hats. I repair drones as well as training in the hobby of flying Professional drones, not toy drones, I am referring to the $300.00 to $500.00 children type drones! Which thanks to these children "or more accurately" their parents. They are responsible for the soon to be leagaly mandated licensing! Prohibiting the flying of any kind of drone without possessing a license! By the F.A.A. With their violating the 500 foot flight ceiling limit enacted to protect passenger jets & and hundreds of lives (not to mention video recording in the windows of unsuspecting people!) I'm an F.C.C. licensed electronic bench technician and have been for 40 years. I have tried every possible flux on the market in the last four decades. And never have I used one with the properties and excellence of this product as far as what I have read from other people who have reviewed this product this problem of spillage & the stickiness is easily avoidable you only need to purchase this product here is the ASN number, if you do a search on Amazon it'll bring you right to the brand name Gaunt B00EXP082S it is a small I believe two ounce oval (important) bottle cuz round tends to tip over more easily where this one will not it comes with a 25 gauge very fine point needle. So that only one tiny drop will come out at a time as far as removing any spillage it's actually quite simple, use a mixture of 50/50 isopropyl alcohol and paint thinner which can be had at any Home Depot department store. It will remove it from your hands, circuit boards or any application. No matter what you use it on, then wash your hands liberely with soap and hot water! And leave it clean and dry without any issue. I have found that using plastic brushes in the shape of a common tooth brush that have nylon bristles seem to work the best especially on circuit boards, I buy them for $3.99 a pack of four at any Walmart or sporting good store. they are also excellent for cleaning firearms! I do Highly!! recommend using a carbon charcoal ventilation fan to prevent inhaling any of the smoke from this product which I would say about most flux products. Don't buy what's commonly referred to as rubbing alcohol which is 70% which is inadaquet in any drug store you can buy 92% isopropyl alcohol and that is the alcohol you should mix with the paint thinner Walmart has the best price on that alcohol at $5.50 a quart in any case as far as wet ability, I have never used any kind of flux that created wet ability with typical 60/40 rosin core solder. As far as strong joints without cold solder joints I feel it is second to none! Electrical conductivity I have tested myself with a Fluke meter and it also is the best I've found to date. If you don't want any of this flux to ever spill on your workbench, that small plastic bottle that I mentioned earlier simply only fill it half way and if it falls over as it has on me dozens of times, not one drop Will leak out. If you are considering buying this flux trust me you'll never by any other brand. best wishes Dr. Thomas Contartesi F.A.C.C.P.S. I have no affiliation with the mg company nor have I been offered the test this product as some people are by Amazon.** the two photos are my latest work they are what's called a Nixie clock the tubes are manufactured in Russia in 1950 they operate on 170 volts a really cool and unbelievably accurate time piece they seem to be catching on in popularity within electronic circles, by no means would I recommend this kit for a beginner!! They keep time via GPS satellite and the LED's under each tube which is an RGB type can produce 256 different shades of color I've never seen a more accurate clock I checked it against my cell phone and it hasn't lost 15 seconds in a year it was fun building it but for those who might like one since they're kind of retro but yet modern this was the technology used by the whole world not just Russia and they were not the only ones that made these tubes they're very expensive but this was the predecessor of the LED this is what we used on all electronic equipment requiring alphanumerics. When the LED came out it was cheaper to manufacture and it seemed Russia had millions of these tubes in warehouses and not just Russia England Japan France and they're being bought up so fast you wouldn't believe it!! Mostly by companies selling kit's or assembled units, anyone that comes in my home the first thing they want to ask me when they see this Nixie clock is what the heck is that LOL.

I just got this yesterday after it took a while in transit. The flux is very thin, which is in contrast to what I had been using. I put some into a nail polish bottle that I have for exactly this application, and it worked perfectly to apply.First I used it to tin the brass contact on one side, and then I added a bit to tin the copper braid I was attaching. These went together fine with another small addition of the flux. I ended up having to resolder it to correct its position, and again, the flux performed beautifully. My experience with Rosin flux is that it generally doesn't work as well as acid flux, but this was probably the best rosin flux I have ever tried.Here's my negative - The cap on this was probably the SINGLE MOST ADULT-PROOF cap I have ever encountered. I swear it took me 10 minutes to get the bottle open. It took a lot less time to make it into a non-adult-proof cap. :-)

This is the first time I use liquid flux and I always wanted to try it out, but was afraid it was too liquid since my purpose is for SMD re-flow, well it works well so far.The liquid is real sticky if you happen to get some on your hands or working area where you didn’t intent to use it, I spilled some around the needle tip bottle and had to wash it with soap in hot water to get rid of the stickiness.The good:The reason I got this version of flux is because it reads “for leaded and lead free solder” so I ran few test with both leaded and lead free solder and it works very nice with bothThe bad, but no so bad:It burns easily even using low temperature solder and iron at 210 C leaving a light brown residue, when used with lead free solder at 330 C it burns and smokes a lot leaving a brown residue.BTW: the dark brown residue is natural for this kind of flux and is because of the material (COLOPHANE) is made out of and I knew it will be brown so no complain here.Cleaning:On both leaded and lead free solder test I was able to clean surface with 99% alcohol without a problem, I even test leaving some on the test board overnight and I was able to clean it without any effort.If you'll be using this flux on high temperature I'll recommend good ventilation.

I'm satisfied with this MG Chemicals Rosin Flux. Price is great compared to other manufacturers (Kester, for example) and it works as expected. Keep in mind that you should also purchase some dispensing bottles.It arrived in a well-sealed package, though not refirdgerated. This may be an issue depending on how fast you go through flux because it has a shelf life. At my current rate of usage this should last just about a year. As mentioned, you will an applicator/dispensing bottle. I filled up one of these bottles (on the right in the picture). My first taskst were to solder leads onto a set of Wemos D1 and Nano clones. The flux flowed easily from the dispenser and 'wetted' the components properly. Once heat was added, the flux burned away and the solder flowed perfectly. Cleanup with 99% IPA worked as expected.The flux worked great and I am happy with the price/performance. I do wish it would have shipped with a dispensing bottle. Other than that, no issues.

I took a punt on this when getting a different GE flux - I don't normally use a liquid flux by prefer a gel. However, needing some solder paste for a quick job and only having a year-old opened tub which had turned mostly solid, I tried rejuvenating it with this flux. By jove, it works! As I recall, the paste was originally a bit dodgy (hence why it hasn't been used) and suffered smearing when heated. After treating with this flux it was really nice to apply, and flowed properly in the oven.Fluxed with success, instead of the nail varnish brush I was going to use I tried a syringe to apply the flux to SMD pads. Using the smallest-but-one (blue) tip, it worked very well. A tiny amount could be easily placed on a pad without it spreading everywhere, and there was no dripping or leaking like you get after squirting out gel. I think this is going to be my preferred flux and application method for most things, now.A plus point is that it has a rather nice sweet smell (it may be bad for you, but if you're going to sniff it you might as well enjoy it).One thing to watch is if you knock over the jar and spill it all over your bench, it takes forever and a LOT of IPA to clear up. It is very seriously sticky and could easily double as contact adhesive.

This is great flux. Really good stuff but as others have said it comes with a sweet smell. I noticed after using it I had a ridiculous headache which lasted for hours. Put it down to a bug but have since noticed every time I use it I get the same headache. Upshot being make sure you extract the fumes better than I do as I’m obviously sensitive and rosin can be toxic.

After using Topnik 800 for years I recently decided to try an RA flux, influenced heavily by Mr Carlson. There's a huge difference, this stuff works much better. More fumes, so extraction is important, and it leaves a bit of a mess on the board, unlike the Topnik, so cleanup with IPA is required, but worth the extra effort.

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First class service from this seller, delivery was the next day, well packed.This is a first class flux, I use when soldering brass Photo Etch, works like a dream gives great solder flow.