Left test kit outside over winter. Still good?


Mod Squad
TFP Expert
Platinum Supporter
LifeTime Supporter
In The Industry
Apr 1, 2007
Sebring, Florida
It's done. Don't take a chance on getting bad results and really screwing up your pool. Bite the bullet and get a new kit you can rely on.


TFP Expert
Platinum Supporter
May 23, 2015
Tucson, AZ
Got it - will order one today. I had been keeping it out by the pool all summer for the last couple of years. I guess that was a bad move too!
Test kit chemicals are heat and moisture sensitive. They should be stored inside your home in a cool, dry and dark space. A high cabinet in a pantry or wash room is fine as long as temperatures are moderate and humidity is low.

ship of fools

Well-known member
Nov 9, 2011
Albany, NY
I bought a new batch of reagents last year because mine were going on their 3rd or 4th season. Everything tested the same using the old reagents so maybe run a couple of parallel tests and you may find you can use the old ones up without losing any accuracy.