Metrohm 824 Easy Sample Changer - Manual (Page 35)

4.1 Information about the methods
824 Easy Sample Changer, Standard methods
29
4 Standard methods
On delivery the 824 Easy Sample Changer already contains four opti-
mized standard methods for processing series of samples. Simple titra-
tion tasks can be carried out with these methods without having to
make complicated settings.
4.1 Information about the methods
The Metrohm sample changer methods consist of three different se-
quences for different purposes and a series of specific settings.
Sequences are made up of a series of individual commands with which
the functions of the sample changer can be programmed. For example,
the command 'LIFT 1 work' causes the Lift 1 of a sample changer to
move to the predefined working height.
Metrohm sample changer methods differentiate between three dif-
ferent sequences:
• Start sequence
The start sequence is carried out once at the start of a series of
samples.
• Sample sequence
The sample sequence is carried out once for each sample.
• Final sequence
The final sequence is carried out once at the end of a series of
samples.
sample sequence
start sequence final sequence
number
of samples
normal state
Series operating
The number of samples is limited only by the capacity of the sample
rack. In principle, in the standard methods of the 824 Easy Sample
Changer all the positions of a sample rack are processed. Empty rack
positions are automatically jumped over.
The standard methods of the 824 Easy Sample Changer can be used
with all Metrohm standard sample racks. In all these methods the
highest (last) rack position is used for a rinsing or conditioning beaker.
Make sure that a sufficiently large vessel is always placed in this posi-
tion.