PERFORMANCE OF TXRF and GI-XRF ANALYSES - Total-Reflection X-Ray Fluorescence Analysis and Related Methods - page 208

Figure4.1. Set-up of a steaming device used for a final cleaning of glass vessels and instruments:
(1) condenser; (2) steam chamber; (3) rack of quartz glass as support for vessels; (4) overflow; (5)
glass flask; (6) heating jacket. Figure from Ref. [3], reproduced with permission. Copyright
1980 by Springer.
surface of the vessels and moves them into the liquid phase. This process is
continuedforaperiodofupto12h.
The specimen should be placed on highly clean carriers. Plexiglas carriers
can be applied without cleaning. These cheap carriers are used only once. All
the other more expensive carriers are used frequently for cost savings. They
must to be cleaned even before their first use because they are not delivered in
sufficiently clean condition.