Alachlor (ring 13C6), 100ug/ml in n-Nonane, 1,2ml

2,2',3,5,6-Pentachlorobiphenyl ,100 µg/mL,isooctane,1mL,

[13C12]Dibenzofuran, 1.2ml x 50ug/ml, toluene

Basic Red 1, certified, 0.1g