Measuring bleach strength?

[Isaac-1]

Is there any reasonable home test to measure the strength of bleach? I ask because my latest batch of 5.25% bleach seems to be particularly strong based on actual vs projected FC rise ( I would guess on the order of 10% bleach effect).

thanks
Ike

 

[JasonLion]

There are three ways to do it. One is to use extreme amounts of dilution, another is to add enough bleach to the pool to raise the FC level significantly and see if the increase is what you expect, and the final way is to get a specialized test kit like the Taylor K-1579. See this topic for details on using dilution.