test strips for CDS

What kind of test strips do I need to check ppm for CDS and where do I get them? do the ones from a pool supply store work? thanks.

You are looking for LaMotte high test Chlorine Dioxide (not chlorine) strips - they test from 0-500. I doubt you can find them at a pool store. You can try amazon or ebay or wwgrainger.com if you're in the US.

Thank you for your help!