Red sea nitrate pro test kit comes with 100 testselement n no3accuracy 006 ppmrange 006 15 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 nitrate 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 solution for testing and controlling nui