Bruker D8 Series User Manual

Procedures
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2 Procedures
For instrument verification the following three parameters are to be evaluated:
1. line position
2. relative line intensity, and
3. line shape.
In the following sections a standard operating procedure (SOP) is described which is valid for
all performance verification levels as described in section Performance Verification Levels
[}6]. This procedure comprises the following steps, details of which are described in the fol-
lowing four sections:
Process Section
Insertion of the standard reference sample
Certified Reference Material [}9]
Setting of given instrument parameters
Instrument Parameters [}9]
Measurement of the standard reference
sample using given measurement
parameters
Measurement Parameters [}11]
Data evaluation and comparison of the
results with specifications
Evaluation Procedures and Data
Interpretation [}12]
The instrument and measurement parameters to be used for the different instrument perfor-
mance tests have been carefully selected to allow accurate, meaningful and holistic instru-
ment verification within finite time. Therefore the instrument and measurement parameters
provided here can be regarded as a recommendation for routine use of the instrument.
An instrument passing all tests with respect to line position, intensity and shape is automati-
cally fit for all kinds of X-ray analysis.
For GxP regulated laboratories Bruker AXS recommends to use the procedures provided in
this chapter as a base for the creation of in-house SOPs.
2.1 Certified Reference Material
The certified reference material to be used is based on the NIST standard reference material
SRM1976c [1] and is delivered with each diffraction system.
This reference material is also recommended for instruments operated in transmission mode,
although only suited for reflection measurements: Instruments must be switched to reflection
mode for verification purposes.
2.2 Instrument Parameters
For Bragg-Brentano systems the instrumental parameters listed in the first table below are
used.
For parallel beam systems equipped with a Göbel Mirror the instrument parameters to be se-
lected depend on the length of the mirror. For 40mm Göbel mirrors (e.g. in the TWIN optics)
the required instrument parameters are provided in the second table, for 60mm Göbel mir-
rors in the third table.

Bruker D8 Series Specifications

General

Brand	Bruker
Model	D8 Series
Category	Laboratory Equipment
Language	English