Silicon, 1000μg/ml in Water with dilute HNO3, 125ml

Aroclor 1248

1,2-Bis(2,4,6-tribromo[13C6]phenoxy)ethane, 1.2ml x 50ug/ml, toluene

Chloramphenicol, 100 µg/ml, Acetonitrile, 1ml