Do soldering flux "expire"?

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Do soldering flux "expire"?

Author: sum (FL)

I was doing some copper pipe soldering last week and had some real difficulty in making the joints.

This is suppose to be a simple project since I wasn't dealing with dripping water or hard to accessible tight space or other challenging situations.

The only thing I can think of is either the brass fittings being lead free are harder to solder? Or may be the flux I have is too old?

The flux I use is Rectorseal NOKORODE Regular Paste Flux. It was bought two years ago and has been sitting in my garage in the hot Miami weather. Does it go bad after a while and loses its chemical properties?

Edited 1 times.

Re: Do soldering flux "expire"?

Author: packy (MA)

from nokorode site..

"Shelf Life
2 year minimum
Suggestions and recommendations covering the use of our products are based on our past experience and laboratory findings. However, as we have no control as to the methods and conditions of application, we only assume responsibility for the uniformity of our products within manufacturing tolerances"

sounds like advice thru their legal team..

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