EPA Method 508A DCB Stock Solution

n-Pentyl iso-pentyl phthalate (n-Pentyl 3-methlybutyl phthalate), 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 776297-69-9

O,O-Diethyl thiophosphate potassium salt, 250mg

2-Nitrobenzaldehyde, 100mg