pH 4.0 Standard @ 25°C

(S)-1-[(10-Chloro-6,7-dihydro-4-oxo-3-phenyl-4H-benzo[a]quiniliizin-1-yl]carbonyl-2-pyrrolidinemethanol, Comet assay grade, 0.1mM, Solvent-DMSO, Unit 1mL certan, # of units-1, Cas.no. NA

Chloridazon-methyl-desphenyl D3, 10mg

EPA Method 8260B - Purgeable Internal Std