Backpack Lab™ Marine Science test kit; acidity (CaCO3), alkalinity (CaCO3) phenolphthalein & total, carbon dioxide (as CO2), dissolved oxygen, nitrite, nitrate (NO3-N), phosphate (orthophosphate PO4-3), & salinity
Backpack Lab™ Marine Science test kit; acidity (CaCO3), alkalinity (CaCO3) phenolphthalein & total, carbon dioxide (as CO2), dissolved oxygen, nitrite, nitrate (NO3-N), phosphate (orthophosphate PO4-3), & salinity