sandwich cell consists of two (2) windows separated by a lead spacer that
is amalgamated to the windows with mercury. The mercury lead amalgam is
impervious to solvents and to virtually any sample. The spacer and
windows form a sealed liquid sample compartment. In the case of the SL-2
configuration, the sandwich cell is also amalgamated to an aluminum front
plate containing luer-lok syringe filling
Sandwich cells can be used to recondition sealed cells, to have backup or
supplemental sealed cells of different pathlengths,
or in a demountable cell. On the next page you will find sandwich cells
that will fit most sealed and demountable cell holders that have been
made in the last 25 years. The SL-3 configuration uses 38.5 x 19.5 x 4mm
rectangular windows, the Beckman-Specac
configuration uses 41 x 23 x 6mm rectangular windows, the SL-2 &
Spectra-Tech configuration uses 32 x 3mm discs and the SL-4 configuration
uses 39.5 x 39.5 x 6.5mm hexagonal windows. These sandwich cells can be
used with any sealed or demountable cell mount with the same window
sizes, regardless of who may have manufactured the cell in the mount.
They are compatible with Barnes, Beckman, Buck, Mc Carthy,
Perkin-Elmer, Pike, Spectra-Tech, Specac, Wilks
and Wilmad cells and mounts.
As shown in Fig. 1 below, the SL-2 sandwich cell replaces the Luer syringe plate, the lead gasket, both crystals
and the lead spacer. The SL-3 and SL-4 configurations of the sandwich
cell replace both windows and the lead spacer as shown in Fig. 2 below.