Alkalinity Test using DPD kit

[buddywiser]

I'm using a DPD Deluxe kit from Leslies and I haven't been able to get a reading for Alkalinity yet. Like the directions say, I put the drops in to turn it green. Then I need to put in other drops until it turns red. It turns bluish, then yellow, but never turns red. I put in about 80 drops a couple times and quit (A couple times). My chlorine is about 8 from shocking. But I waited 2 days and tried again, but the same thing. Help

 

[JohnT]

Blue to yellow is the same transition as green to red, but it occurs in the presence of high chlorine or other oxidizer.