55 tests- Measures non-chelated copper as used in copper treatments for marine fish parasites. May be used to test copper content of tap water.
Other Items from Red Sea Test Kits Red Sea Marine Lab - Red Sea Reef Lab - Red Sea PH&Alkalinity - Red Sea Ammonia - Red Sea Nitrite - Red Sea Nitrate-ll - Red Sea Phosphate - Red Sea Calcium - Red Sea Copper - Red Sea Magnesium -