*Di-n-heptyltin dichloride Internal Standard, 1200 µg/mL in Methanol, CAS # 74340-12-8, 1 mL

This Certified Reference Material at a concentration of 1200 µg/mL in Methanol is composed of a single analyte. It is supplied in a unit of 1 mL and should be stored in the freezer at less than -10 °C.