EPA Method 550 Analytes

Daily Quality Control Standard (without Internal Standard) 14 Analytes, each Wt.% as listed; units: 1x10mL, 5x10mL neat Name Wt.% Name Wt.% n-Hexane 12 Toluene 9 n-Heptane 20 Eth

4-Methylheptane, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 589-53-7

Atrazine, 10.0 µg/ml, Acetonitrile, 10ml