This product includes 600 ul of 10 x assay buffer, 35 ul of 100 x UMP, 35 ul of 100 x E. coli UMP kinase, 35 ul of 100 x ATP, 35 ul of 100 x MUK Reagent A, 35 ul of 100 x MUK Reagent B and 300 ul of 10 x fluorescence dye for 100 assays in a 384-well assay format.