Need creative way for testing pool chlorine

[werd98]

We're vacationing in a 3rd(?) world country, and the pool looks a bit sketch. Of course, I didn't bring my fas-dpd test I did buy some bleach, but would love a creative way for testing fc before I just pour some in. Any suggestions?

 

[cowboycasey]

do you have the OTO chlorine and ph tester? if so here ya go

Extended OTO color comparator?

it is close but not precise, it should work for what you're trying, the problem is not knowing what the CYA is, and therefore not knowing what the SLAM level would be...

 

[werd98]

Lol I have nothing might be able to get some beets, baking soda, etc at the tiny store here ...