EPA Method 551.1 Surrogate Standard

3-Chloro-1,2-propandiol-2-monoerucidate, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no.

Thiophene/2-Methylthiophene (2:1) in isooctane/Toluene(3:1); Units: 5x1mL ampoules, 1x10mL screw-capped bottle Chiron No. Concentration µgS/g (ppm) Wt.% S-4056-0 Blank 0 S-4056-5 5

3-Methyl-2-naphthol, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 17324-04-8