Graphite Cooling Ring for MHS-10/15 Quartz Cells, 1 Ring

This graphite cooling ring fits on the Quartz Tube Atomizer (QTA) of the MHS-10 and MHS-15 Mercury Hydride Systems. Graphite cooling rings at the QTA ends prevent ignition of the hydrogen liberated during the determination when sodium tetra hydroborate is used as the reductant. Note that the QTA requires the use of two graphite cooling rings.