ZP is an ISO13485 contract developer and manufacturer of electrochemical biosensors, as part of our tool box the development of immunosensors and molecular assays is a regular effort at ZP. On this page we highlight 1-pyrenebutyric acid-N-hydroxy-succinimide ester (PANHS), a reagent that can be used to tether macromolecules to carbon and graphene electrodes.