ZORBAX Bonus-RP 

Bonus-RP columns provide unique selectivity and applicability for mid pHs with an embedded amide linkage in the C14-alkyl chain. At pH 7 Bonus-RP provides excellent peak shape for even the most challenging basic compounds. Bonus-RP is protected from hydrolysis at low pH using the same sterically protecting bulky side chains as StableBond, and also is triple endcapped to minimize silanol interactions and improve stability at mid pH. Bonus-RP can be used without phase collapse in 100% aqueous mobile phases.