Cephapirin benzathine, 100mg

Arochlor 1242 , 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 53469-21-9

Methanol QC Reference Mixture III n-Butyl sulfide, 0.5 ppm (weight S by weight) in 99.9 % methanol; units: 1x10mL, 5x10mL

g-Hexabromocyclododecane, 50µg/mL in Toluene,1,2ml