
Preparing Samples
Voyager
™
Biospectrometry
™
Workstation User’s Guide 3-17
3
3.1.4 Preparing Sample
In this section
This section includes:
• Sample concentration
• Preparing samples for dried droplet application
• Preparing samples for thin layer application
• Internal standards
Sample
concentration
Prepare sample just before loading the sample plate. Refer to
Section 3.1.5, Sample Cleanup, to determine if your samples
should be cleaned up before preparing.
The ideal sample amount for analysis is:
Preparing
samples for dried
droplet
application
For peptides and proteins, dilute sample at this phase of
sample preparation to a concentration of 1 to 10 pmol/µl. For
other compounds, refer to Section 3.1.3, Matrix Information, to
determine the appropriate concentration for this phase of
sample preparation.
Compound
Typical Concentration
Dried Droplet Application Thin Layer Application
Peptides 0.1 to 10 pmol/µl < 0.1 pmol/µl
Proteins* 0.1 to 10 pmol/µl _____
Oligonucleotides 10 to 100 pmol/µl
_____
Polymers 100 pmol/µl _____
* Some proteins, particularly glycoproteins, yield better results at concentrations up
to 10 pmol/µl.
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