
Chapter 3 Preparing Samples
3-12 PerSeptive Biosystems
3
DHB
Use DHB for:
• Neutral carbohydrates
• Small molecules
DHB for neutral
carbohydrates
Matrix concentration 10 mg/ml
Final sample concentration 10 pmol/µl
Solvents Deionized water
Preparation Follow the procedure in “Preparing matrix” on
page 3-5. Dry down quickly under vacuum for even
response. If you allow to air dry, you will see uneven
response during analysis.
Crystals Milky amorphous appearance for promoting
cationization (see Figure 3-3 on page 3-35). Difficult
to see crystals when vacuum dried.
Stability Prepare weekly.
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