Xylazine hydrochloride, 100mg

Bisphenol E, 100mg

m-Xylene, 1000µg/ml in MeOH, 1ml

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.