This product includes 2000 ul of 10 x assay buffer, 170 ul of 100 x GMP, 170 ul of 100 x S. pneumoniae GMP kinase, 170 ul of 100 x ATP, 170 ul of 100 x MUK Reagent A, 170 ul of 100 x MUK Reagent B and 1700 ul of 10 x fluorescence dye for 500 assays in a 384-well assay format.