The resin contains 5-10% non cleavable covalently attached ligands, 40-45% linker for peptide release with 5% TFA and 40 - 45% linker for peptide release with 95% TFA.

The peptide, liberated by 5% TFA treatment must be seperated from the resin and deprotected with 95% TFA in a follow up step.

This resin type is specially suited for effective library screening