Voyager DP-263-S Guía de usuario Pagina 135

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Preparing Samples
Voyager
Biospectrometry
Workstation User’s Guide 3-5
3
NOTE: HPLC-grade water may vary in salt concentration
and may produce adduct ions in mass spectra. A high salt
concentration may interfere with some applications,
particularly oligonucleotide analysis. Use double-deionized
water, such as Milli-Q
grade 18
m
, which is appropriate
for most applications.
WARNING
CHEMICAL HAZARD. Refer to the Material Safety Data
Sheet (MSDS) provided by the chemical manufacturer
before handling solvents or matrices.
Preparing matrix
To prepare matrix:
1. Label a 1.5 ml microcentrifuge tube with the name of the
matrix, the final concentration, and the date prepared.
2. Before weighing out the matrix, zero the balance with the
labeled tube.
3. Weigh out the matrix into the tube. See “Matrix
Information” on page 3-6 to determine the proper
concentration for your matrix.
NOTE: It is not necessary to weigh out the exact
amount of matrix. You can record the weight of the
matrix and adjust the final concentration accordingly.
NOTE: Use a fresh tip each time you pipette a different
substance.
4. Add a volume of appropriate solvent to achieve the
needed concentration for your matrix. See “Matrix
Information” on page 3-6. The solvent should be miscible
with the sample.
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