25-Hydroxyvitamin D2-d6 (Dimethyl 26,27-d6)

4-Methoxy-2',4',6'-trichlorobiphenyl, 100µg/ml in IO, 1ml

Mass-Labelled PCDD/PCDF Internal Standard Solution, 1.2ml, nonane

BTEX Mixture 1 6 Analytes, each 200 µg/mL in methanol; units:1x1 mL, 1x5mL 1300.6 Benzene [71-43-2] 1267.8 o-Xylene [95-47-6] 1264.7 Toluene [108-88-2] 1266.8m-Xylene [108-38-3] 1268.8 Ethylbenzene [100-4