Red sea phosphate pro test kit is a highly accurate test with an accuracy of 0014ppmelement p po4accuracy 0014 ppmrange 0014 16 ppmtest type comparatornumber of tests 100all pro test kits come in a durable plastic housing and use optically clear analytical lab grade glass test vials used for testing of phosphate in the aquariumcan also be used as part of the stage 2 algae nutrient control in the red sea reef care program the algae nutrient control stage provides a complete