I am offering a special Boron Carbide mortar and pestle which I have used over the last two decades for crush-leach-Rb-Sr isotopic analysis uf sphalerite/quartz and its fluid inclusions.
The mortar is embedded in an aluminium socket, inner diameter is 48 mm, outer diameter is 55 mm, depth is 35 mm.
The mortar has been exclusively used in a clean lab and is in top condition.
Contact me if you are interested or have any queries.