Best Phosphate Test Kit

[Ralph ATL]

I have used both the HACH test kit & the DD Merck. The DD Merck shows both scales, so no worries as it does read to the 0.024 level as boomer stated. They both tested my water with the exact same results over an entire year period, so I have the HACH kit to a fellow refer as the DD Merck was easier to use. The new Elos kit is pricing at $49.95 and supposedly uses the exact same methods.

I would try Elos.