Operation
XD 7500
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04/2018
4.2.6
Usable cells
Depending on the wavelength range, different kinds of cells are suitable. Suit-
able are round cells, all rectangular cells of glass, quartz or plastic, whose
side surfaces are frosted (see Section 8.1). Cells with clear or serrated lateral
surfaces are not reliably recognized by the automatic cell recognition.
Especially with plastic single-use cells we recommend you test them for suit-
ability prior to carrying out large-scale series of measurements.
With the use of less than 10 ml test volumes, 50 mm so-called semi-micro
cells must be used.
For measurements in the UV range below 320 nm, glass cells and commer-
cial PS plastic cells are not suitable; below 280 nm, commercial PMMA plas-
tic cells are not suitable due to their transmission characteristics. Therefore,
use quartz cells or tested single-use cells (plastic) for applications in the UV
range.
4.3
Photometer settings and system administration
The general photometer settings are made on the
<HOME>
General setup
-
> menu. These comprise:
Language (see Section 4.3.1)
Date/time (see Section 4.3.2 and Section 4.2.4)
Display characteristics (see Section 4.3.3)
User management (see Section 4.16)
Administration of the measurement data memory (see Section 4.11)
Software and method update (see Section 4.20)
Reset of the settings to default values (see Section 4.17)
Settings for data transmission (see Section 4.14.2)
4.3.1
Language
The complete list of the available instrument languages is given in the
Lan-
guage
chapter and in Chapter 7 T
menu of the photometer.
Details on the minimum filling level and minimum filling volume
are given in Chapter 7 T
.