MG ChemicalsLiquid Rosin Flux, Non Corrosive and Non Conductive residue, 1 Liter Bottle

Best flux I've used so far. It's very runny so I dispense it with a little plastic bottle with a syringe needle cap.

Excellent stuff, do need to clean after use as it can leave a bit of a sticky residue.

MG chemicals is the best flux going in my opinion! I decanter into bottles and refillable pens.

Does the job well. Just a bit too fluid for my liking - Very easy to get everywhere! Used sparingly, this bottle should last me forever (shelf-life permitting), but seemed to be by far the optimum size vs value.

It's what you need to do the job .

It's a great flux in a seemingly inexhaustible 1L bottle. Works quite well for soldering joints on PCBs. I see so many YouTube vids where the maker doesn't use flux or even recognize its value. Simply put, it stops impurities from forming under heat from the solder and pads to make sure you get a clean, efficient welding bond.Flux is a critical part of soldering. It helps the solder flow, helping in heat retention and reducing power dissipation from the iron by keeping the solder joint clean. To use it, just pour a small amount from the bottle into a needle dispenser bottle (Amazon sells these affordably). Clean the surface with isopropyl alcohol (70% or higher - yes, 70% works great and is a fraction of the cost of 99%). Then apply flux to the pads / holes you are about to solder - just a drop is fine. Then solder, and clean off the residue. Using it drop by drop, you will see that 1L of flux will last you as long as its shelf life. BTW - I haven't ever seen flux "magically degrade" when the shelf-life date is hit (usually ~2 years). It will still work for quite some time more, but perhaps less effectively? This bottle will *last*.

Works well, low viscosity for use with a dropper and cleans easily with IPA.

Better value for money than smaller bottle my only issue was the way it was packed basically left to roll around in a big mostly empty box on its side with clothes that were shipped as part of the order. It did not leak but still could have been better packed.Other than that tottally satisfied

Very good flux. It is a liquid flux but that is what I was looking for.