SECTION 1
INTRODUCTION
1.1 INSTRUMENT DESCRIPTION
The Models 6400 and 6405 incorporate a wide range of features designed to satisfy the needs of users
seeking to maximise the efficiency of routine and specialised UV and Visible spectroscopy tasks.
Menu based operation guides the user through all the available modes and ensures that unfamiliar
operators are able to complete satisfactory analyses. Multi-language capability allows screen instructions
to be presented in a choice of English, French, German, Italian, Spanish, Swedish or Portuguese.
The 6400 and 6405 spectrophotometers incorporate an innovative optical system which reduces stray
light and enhances overall reliability by minimising the number of optical elements employed. The
sample chamber allows total sample presentation flexibility with cells from 100mm path length down
to micro-sample capacity being readily accommodated. Eight position motor driven multi-cell changer
and sipper pump accessories are available, either factory fitted or as user installable options. In addition,
an electronically temperature controlled Peltier cell holder is available for situations where a constant
temperature is essential.
A scanning facility is provided on both the 6400 and 6405. The scan range, speed and resolution can
be user adjusted and the resultant scan, which appears in real time on the graphics display, can be auto
scaled to give enhanced visibility. Peaks and valleys are labelled with wavelength and absorbance
values and can be readily down loaded to the optional internal printer or, via the serial interface, to a
PC. A cursor facility allows the user to interrogate specific parts of the scanned data.
Full kinetics capability is incorporated into each unit and allows, usually in conjunction with the
Peltier cell block, full analysis of timed reactions.
Methods producing non-linear results can also be accommodated by using powerful in-built software
in conjunction with the multi-cell changer. Up to seven data points can be determined automatically
and used to construct a curve. A variety of statistical methods are available to ensure a close correlation
to all curve shapes.
Design of the units is such that minimal routine maintenance will be necessary in normal use.
This manual has been produced to help guide you through the many operating modes and features
available on the 6400 and 6405. Our hope is that operation of the units is such that reference to this
manual will be required only rarely. It is our aim to ensure that all information needed to operate these
products satisfactorily is contained within. If, however, you experience any difficulties please contact
the manufacturer or your local distributor for guidance.
640 050/REV B/11-99
1
