Malvern Zetasizer Nano Series, Руководство пользователя

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Introduction
After reading this chapter a user should be able to make simple measurements.
The chapter goes through the basics from turning on the system to displaying the
results of a measurement.
The first section, “Quick guide to making a measurement” will run through
the basic steps, giving an overview of the measurement process. The rest of the
chapter will go through the same steps but in more detail.
Once a measurement has been completed, the result can be edited to check the
effects if one of the measurement parameters was altered - refer to
Editing the
result at the end of the chapter.
Manual and SOP measurements
It was mentioned in Chapter 3 that there are two basic measurement methods:
Manual measurements and S tandard O perating P rocedure ( SOP )
measurements. It is important to understand and consider these methods before
proceeding.
.
A Manual measurement is basically a one-off measurement where all the
measurement parameters are set up immediately prior to the measurement.
This is ideal if measuring many different types of sample, or experimenting
with the measurement parameters.
.
An SOP measurement uses pre-set parameters (that have previously been
defined) to ensure that measurements made on the same type of sample are
made in a consistent way; this is useful in quality control environments.
SOPs are also ideal if measuring the same sample in slightly different ways;
having to type a majority of identical parameters each time a measurement
is made is tedious and runs the risk of making errors in the settings. In-
stead, alter an existing SOP and just change the required parameters.
Note that most of the settings and dialogues used for a manual
measurement are the same as those used in an SOP measurement.
The sections that follow, “Quick guide to making a measurement” etc, will focus
on SOP measurements. Chapter 9 will give details on creating and managing your
own SOPs.
C H A P T E R 4
Z e t a s i z e r N a n o S e r i e s
P a g e 4 . 1