C4zip ●

Rinsing with a buffer like 0.1% trifluoroacetic acid (TFA).

Perfect for recovering larger proteins without losing them to the resin.

While C18 is the "gold standard" for peptide mapping, it can bind proteins so tightly that they become nearly impossible to elute. The shorter carbon chain of the C4 resin offers: Rinsing with a buffer like 0

Preparing the resin with a wetting solution (e.g., 50:50 acetonitrile in water).

Using these tips typically follows a simple four-step process: Rinsing with a buffer like 0

Aspirating and dispensing the protein sample multiple times to maximize binding.

Using a high-organic solvent to release the purified protein directly onto a MALDI plate or into a fresh tube. Real-World Application: Mass Spectrometry Rinsing with a buffer like 0

Essential when working with low-abundance samples.