Tramadol-13C,d3 HCl, 100µg/ml in MeOH, 1ml

Benzidine, 100 µg/ml, Acetonitrile, 1ml

Sulfur Standard: S @ 10 µg/g (0.0010 wt%) in #2 Diesel Fuel, 100ml

Amitrole, 10.0 µg/ml, Methanol, 10ml