Peptide extraction solution (5% formic acid/acetonitrile (1:1))
Reagent	Final concentration	Amount
Formic acid	2.5%	0.5 mL
Ultrapure water	N/A	9.5 mL
Acetonitrile	N/A	10 mL
Total	N/A	20 mL

Can be stored at room temperature for up to 2 weeks.