0.15% trifluoroacetic acid solution

Reagent	Final concentration	Amount
Water	N/A	9.85 mL
Trifluoroacetic acid	0.15%	15 μL
Total	N/A	10 mL

Note on storage conditions: 0.15% trifluoroacetic acid solution can be stored at 20°C–25°C for up to a year.