Prallethrin, 100 µg/ml, Acetonitrile, 5ml

Pyrethrins, 100 µg/ml, Acetonitrile, 1ml

N,N-Dimethylguanidine, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 6145-42-2

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.