Chapter 4 Making measurements
Page 4-44 MAN 0474
Click the Advanced button to reveal the following additional options:
Section/option Description
Analysis Modes Use Keep a single result mode if you know your sample
has a single mode size distribution. This option eliminates
any small modes produced by noise on the measurement.
Disable Detec-
tors
Set the number of inner (low scatter-angle) detectors to be
ignored by the analysis. Thermal fluctuations in the disper-
sant can cause signals in the inner channels to be inter-
preted as large particles. Set the number of detectors to
remove the effect of these fluctuations, at the expense of
reducing the sensitivity to the presence of genuinely large
particles.
Red Light Only Remove Blue Light from Analysis allows a measurement
made with red and blue light to be analysed as if the blue
light was not used. (wet only)
Sensitivity
(Wet dispersion
units only)
Enhanced sensitivity has maximum sensitivity to any small
modes that are separated from the main particle mode; while
Normal sensitivity (default) subtracts more of the back-
ground and reduces small extra modes.
Virtual lens
range
Virtual lens ranges limit the result analysis range to that of a
legacy instrument, such as a 300mm lens used on a Master-
sizer X, and are used to help with method transfer from older
Malvern laser diffraction systems:
Selecting each lens range will truncate both the detector
range and the size range of the Mastersizer 3000 system to
match the selected system.
Select this feature for use from the options menu
Mastersizer
3000E
This option will force a Mastersizer 3000 measurement to be
analysed as if it was made on a Mastersizer 3000E.
Selecting the Mastersizer 3000E analysis mode will override
some of the other advanced settings. For example, the num-
ber of virtual lens ranges available will be reduced.
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