Dimethoate, 100µg/ml in MeOH, 1ml

n-Pentacosane, ?13C: -28.21, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-5, Cas.no. 629-99-2

2,3,7-Trichloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

Tribenuron-methyl, 100 µg/ml, Acetonitrile, 1ml