MG Chemicals - 836LFNC-1L 836LFNC Lead Free NO Clean Flux, 1 Litre, Bottle

THIS PRODUCT IGNITES !....I ALWAYS USE "STAY BRIT FLUX", WHEN SOLDERING, I WILL DRIBBLE SOME FLUX ON MY SOLDER JOINT TO MAKE THE SOLDER FLOW ...THIS FLUX FLARED UP AND BURNED MY MUSTACHE. IN 50 YEARS OF SOLDERING, I'VE NEVER USE A FLUX THAT IGNITES....ALSO. I CANT GET A REFUND, SO I'M STUCK WITH IT.

Does seem to work to some extent, however it volatilizes easily, and is far more irritating than pretty much any other flux I've worked with. It also appears to char if you're working at higher temperatures like I tend to using a cheap iron in lead-free solder. At lower temperatures it seems to clean solder, but doesn't really allow the solder to stick like a good rosin flux will. Overall, this is like 70% the cost of rosin flux for a fraction the performance.

This doesn't work as flux for soldering, it smells like Acetone/Nail Polish Remover, it evaporates very fast when trying to solder and provides ZERO abilities of what flux does.

I didn't realize this wasn't "normal" liquid flux when I ordered it. It is definitely NOT, your typical electronic hobbyist rosin flux. It's made primarily for wave soldering. That said, it DOES work. But it's not easy. I used a syringe, and got decent results soldering headers onto a PCB. It might even be better than rosin flux for this type of thing. But I went ahead and bought a liter of rosin flux anyway.

Label and MSDS all indicate this is ethanol mixed with isopropanol that would fully evaporate before the copper and solder reach the bonding temperature. Based on an evaporation test on clean glass (see photos) there is a tiny amount of residue. I assume that is their off-label flux added in homeopathy-style amounts. $17 for a few milligrams of actual flux is a steep price. I wish the vendor were transparent as to what the concentration of the active component should be. Have yet to test during soldering.

This stuff smells like rubbing alcohol. And evaporates like it as well. I'm not satisfied with the performance.I've come to realize that this product is probably supposed to be used as flux CLEANER. NOT actually flux. Don't know if it's a labeling issue or what. But it's really great for CLEANING PCBs.

This product is VERY thin. I didn't like it as much as "traditional" rosin. Easy to make a mess. Watch out for SDS if in an industrial environment. Nasty stuff.

If you are a sodering hobbiest this is a 100% must buy in order to get the job done!What does that mean?Well, if you are working on an RBG mod you would not be able to soder two points of a circuit together.GET THIS PRODUCT! You won't regret it!

Used it for stained glass. Didn’t turn out well. Evaporated very quickly and oxidized the copper foil. Didn’t matter how much or little I put on, would not solder to copper foil.Also left tarnish rough spots on the solder. (I bought another type of flux and it worked amazingly so I’m 99.9% sure it was this brand of flux. I was even able to redo the pcs that didn’t turn out well from using this brand)Maybe it would be good for another type of application, but I do not recommend for stained glass.

Good for desoldering and desoldering preparation smd components.

Has a fast evaporation rate. I dont use it with hot air obviously. But for a quickie resolder, its fine with a rosin core solder job. :)

Nice flux, easy to clean up and it’s nice and clear.I have no worries about using lots of flux. This container will last the year.

Good