Hmm interesting. I had never thought about using chlorine test strips for testing RODI. I will look into those. Thanks.I use those Insta-Tesr test strips that you just dip in the water to test for chlorine. I believe they also test for chloramines as well. It’s how I decide when to change my carbon blocks. They had some complaints about accuracy in the BRS reviews, but my city’s water report matches up perfectly with what I see on the test strips so They worked well for me.
Dennis