EPA Method 8250/8250A Mix #2 - Acids

alphaßß (20R,24S)-24-Methylcholestane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 71117-90-3

4-Methylphthalic acid, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 4316-23-8

1,2,3-Trimethylbenzene, 250mg