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

Sulfur Calibration Stock Solution Thiophene 1000 µg/mL in Toluene; unit: 5x1mL ampoules Please request for diluted samples in the range 1 to 1000 ng/mL.

Metoprolol-d7 hydrochloride (isopropyl-d7),1000 µg base/mL,MeOH,1mL

2-(2,4-Dihydroxybenzoyl)benzoic acid, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 2513-33-9