EPA Method 528 Internal Standard

3,4'-Dibromodiphenyl ether, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 83694-71-7

Bis(2,3-dibromopropyl)phosphate, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 5412-25-9

Homoyessotoxin, 5.0µmol/mL, Solvent-methanol, Unit 0.5mL, # of units-1, Cas.no.