EPA 1620 Standard 2

Daily Quality Control Standard (with 3 Deuterated Compounds Internal Standard) 14 Analytes + 3 ISTD, each Wt.% as listed; units: 1x10mL, 5x10mL neat Name Wt.% Name Wt.% n-Hexane

2,4,4',5-Tetrachlorodiphenyl ether, 1.2ml x 50ug/ml, nonane

Eudalene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 490-65-3