
Preparing Samples
Voyager
™
Biospectrometry
™
Workstation User’s Guide 3-11
3
3-HPA
Use 3-HPA for large oligonucleotides >3,500 Da.
Matrix concentration 50 mg/ml
Additive concentration 50 mg/ml diammonium citrate in deionized water
Final sample concentration 1–10 pmol/µl
Solvents 50 percent acetonitrile and deionized water
NOTE: HPLC-grade water may vary in salt
concentration. Do not use for oligonucleotide
analysis.
Preparation Follow the procedure in “Preparing matrix” on
page 3-5 and combine 8:1 3-HPA:diammonium
citrate.
Air dry sample plate after loading sample and
matrix.
Crystals Needle-like crystals inside a ring (see Figure 3-2 on
page 3-35)
Stability Prepare weekly.
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