Type 9 Semi-Micro cells are for use in situations where the amount
of sample volume is limited. The volume of a Semi-Micro cell is approximately
40% of an equivalent path length Standard Rectangular cell. The exterior
dimensions allow them to be used with virtually every spectrophotometer
or photometer instrument.
All Type 9 cells have an exterior height of 45mm, two clear windows
and an open top. The walls and base of the cell are polished on the
inside and grey on the outside and are made from clear transparent
material. Window thickness is 1.25mm. PTFE lids are supplied with
all path lengths with the exception of the 100mm which has a glass
Starna Semi-Micro cells are also available with black
or opaque walls for better attenuation and greater sensitivity
and are listed as Semi-Micro Self Masking.
To further reduce the volume while retaining the internal width
of 4mm cells with thick bases can be used, normally 9mm although
12mm thick bases can also be supplied. The most often requested
path length with a thick base is 10mm as shown in the listing, however
a thick base can be applied to any Type 9 cell. Please note that
cells with a thick base will not suit instruments which have an
8.5mm 'Z' Dimension.