EPA Method 625 Base/Neutrals Mix #1

Surrogate Standard Solution, 1.2ml, nonane

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

Penicillin G potassium, 100µg/mL in Acetonitrile, 1ml