| Z
Dimension of Spectrophotometer Cells |
| What
does Z Dimension mean? |
Z
Dimension is defined as the distance from the bottom of the cell compartment
in your instrument to the centre of the light beam.
|
| Why
is Z Dimension Important? |
Each
instrument manufacturer makes engineering decisions for the design
of their instrument to ensure optimum performance. The height, width,
focus and placement of the light beam in any instrument is based on
these engineering decisions to ensure that the instrument performs
to their published specifications. It is important to you, as the
instrument user, when you are attempting to use a small sample volume.
You must ensure that your smaller volume is placed in the centre of
the light beam and that any light which does not pass through your
sample is blocked (or masked) by black material. If the cell is not
properly masked then the sensitivity will be eroded.
|
| Z
Dimension of various manufacturers |
We
have compiled this list of Z Dimensions from some of the instrument
manufacturers. If you find a discrepancy in this list, please let
us know and we will investigate.
|
| Manufacturer |
Z
Dimension |
| Beckman® |
8.5
mm |
| Bio-Rad |
8.5
mm |
| Hewlett
Packard® |
15
mm |
| Hitachi® |
8.5
or 12 mm |
| Perkin-Elmer® |
15
mm |
| Pharmacia |
15
mm |
| Shimadzu® |
15
mm |
| Spectronics® |
8.5
mm |
| Thermo
spectronic |
8.5
or 15 mm |
| Unicam |
8.5
mm |
| Varian® |
15
or 20 mm |
| GBC® |
15
mm |
|
 |
