Tech Spray 1621-10S EcoLine Flux Remover, General Purpose Defluxer, 10 oz Can

I'm building LDC microphones, these have extremely high impedances inside. Just a little flux around one of the critical connections will cause noise and distortion, sometimes B U Z Z Z Z. By taking the time to carefully clean each major solder connection with this chemical (on the end of a Q-tip) I've had 100% success with my microphone construction and builds. Good stuff, strong smell, works great.

I use this at work. It removes all resin flux from circuit boards after making repairs. Highly recommended by me

I had a large (15x21) board covered with flux residue from soldering. I used most of the can, but it did do a pretty good job of removing all the gunk from the board. Evaporates quickly without much odor, leaves no residue behind.

A side from the fumes, works like a champ.

My long time favorite. Doesn't take much to remove either fluxed or optimistically-called "residue free" residue from circuit boards. Get the board slightly wet, let it sit for 15 seconds, then a quick rinse. Avoid prolonged spraying. Doesn't take much, one can lasts a long time for hobbyist use.

Get a spray bottle with 99% alcohol and a soft bristle toothbrush will equal same result. Super overpriced stuff. Never again.

This product work’s excellent, but this can did t last near as long as other cans I have purchased from distributor.

Too expensive......was just as easy and much cheaper to use a bottle of alchohol and an old toothbrush.