Chlorine shelf life?

[Spitdog]

I know chlorine losses strength of its active ingredient over the winter but was wondering how much?
What Percentage amount would you say a Gallon of 12.5% would loose .

 

[Texas Splash]

Here you go.

Breakdown of Bleach Over Time by Storage Temp - Further Reading

www.troublefreepool.com

 

[Spitdog]

Thank you Texas, that’s like perfect!