Skimmer base, brass, for x-lens, optional for Agilent 7700x/e, but also suitable for 8800 ICP-MS, use with Ni and Pt skimmer cones

Skimmer base, brass, for x-lens, optional for Agilent 7700x/e, but also suitable for 8800 ICP-MS, use with Ni and Pt skimmer cones