Atrazine-d5 (ethyl-d5),100 µg/mL,acetonitrile,1mL,

1-Hydroxycyclohexyl phenyl ketone, 100mg

Ceftriaxone disodium salt hemiheptahydrate, 50mg

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