How long does the R-0013 CYA reagent stay good?

[TomAtlanta]

How long does the R-0013 CYA reagent stay good? I have some that is maybe 3-4 years old. Will it still give accurate test results?

 

[V___25]

I think this reagent has one of the longer shelf lives and should be good for a couple of years, as long as it doesn't freeze or get left in the sun for a long time. If you store it inside your house, it should be fine for a while.