UREA UV SL y Sample Standard Reagent R2 60 µL 60 µL 60 µL Sample Calibrator PROCEDURE UREG0125PS 2 x 62.5 mL UREG0250PS 4 x 62.5 mL R1 R1 R2 R2 800 µL 200 µL - 10 µL Test Reagent R1 Reagent R2 Standard Sample Standard 800 µL 200 µL 10 µL - Reagent R1 Distilled Water Calibrator Sample 240 µL 3 µL - - 240 µL - 3 µL - 240 µL - - 3 µL Calibrator Blank Test