Ammonia Assay Kit_Calibration curve Preparation of two NH3 sample y = 282.19x-10.01 1. 100 ppmv, 0.3 L in 3 mL water, theoretical [NH3]: 0.41 mM 2. 100 ppmv, 0.3 L in 1 mL water, theoretical [NH3]: 1.22 mM Intensity Experimental [NH3] Theoretical [NH3] Sample 1 21.33 0.11 mM 0.41 mM Sample 2 85.07 0.34 mM 1.22 mM Ammonia Assay Kit (MAK310) was used to build up the calibration curve following the standard protocol (technical bulletin from Sigma). Standard solution: 0.1, 0.25, 0.5, and 1 mM NH4Cl Principle Fluorescence (λem=450 nm )