pH 4.0 Standard @ 25°C, in water, 100ml

NPD F-Internal Standard Cocktail 3 Analytes, each concentration as listed in isooctane; units: 1x1mL, 5x1mL, 10x1mL Chiron No. Name CAS No Conc. 1313.10 1-Fluoronaphthalene [321-38-0 ] 1

2,3,6,7-Tetrachloro[13C12]biphenylene, 1.2ml x 50ug/ml, nonane

n-Hexacontane, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 7667-80-3