Chapter 4 Making measurements - a tutorial
Page 4-16 MAN 0384
Measuring new samples
The above procedures are fine if the SOP is set up or all the parameters for a man-
ual measurement specified. For a new material, either create or modify an SOP or
set up the options for a new manual measurement. This section outlines how to
measure a new sample.
Measuring new samples: manual measurement
The basic procedure is the same as the demonstration outlined above. When the
Options button in the Measurement Display is pressed, the Measurement
Options dialogue appears. This dialogue controls all aspects of the measurement:
The Materials tab allows the user to select a different material and dispersant
or define the optical properties of new materials. It also allows the user to spec-
ify options regarding the result calculation.
Note
If a material is created or modified, the computer calculates a new scatter-
ing model. This usually takes one to 10 minutes, depending on the compu-
ter.
The Measurement tab allows the user to set up measurement times and set
measurement alarms, etc.
Press the Document button in the Measurement Display and use the Docu-
ment dialogue to add relevant details that will allow users to repeat the measure-
ment in future.
All the options available are basically the same as when setting up an SOP. For
more details of these options see Measurement options later in this chapter.
Measuring new samples: SOP measurements
Creating an SOP is easy. The operator selects Configure-New SOP and the soft-
ware runs through a SOP Wizard. The SOP Wizard asks a series of questions
that combine to define a measurement, such as:
what are the optical properties of the sample?
what is it suspended in?
how fast should the stirrer be?
how much ultrasonic dispersion is required?
i
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