... oxygen collection bottle, quartz triangle flask, tee, tube, quartz glass, the test instrument with quartz rod, quartz condenser, quartz chemical ... are quartz products, high temperature resistant 1150-1200 degrees, quartz glass, quartz flask, quartz cylinder, etc. It can be ... metal collecting pot; (2) the oil analysis special vessels - furnace method and kang type carbon residue, ash content of crucible ...