pI Marker Kit features synthetic peptides for high resolution and quantitative reproducibility in calculating protein pI. The combination of the advanced cIEF methods, synthetic pI markers, and the PA 800 Plus system results in cIEF separations with the highest level of precision for pI determination and isoform quantitation of your sample.This includes:• Five vials containing 240 µL each of peptides with the following pI values:pI 4.1, pI 5.5, pI 7.0, pI 9.5, pI 10.0. This volume enables 100 cIEF runspI Marker KitcIEF肽蛋白标记试剂盒(5种标记物)pI Marker Kit、 cIEF Peptide pI Marker Kit