All Primus Ultra2 HbA1c users, We have observed significant between batch QC drift when assessing the new 'improved' Reagent 2A mobile phase and Gold boronate affinity columns. Primus has recently released a technical bulletin highlighting this, as this has been observed in multiple sites. Is anyone willing to share their data / observations regarding this drift in order to stimulate further discussion? Many thanks. Colin Stone. Section Manager Clinical Biochemistry Dept. Kings College Hospital NHS Foundation Trust ------ACB discussion List Information-------- This is an open discussion list for the academic and clinical community working in clinical biochemistry. Please note, archived messages are public and can be viewed via the internet. Views expressed are those of the individual and they are responsible for all message content. ACB Web Site http://www.acb.org.uk List Archives http://www.jiscmail.ac.uk/lists/ACB-CLIN-CHEM-GEN.html List Instructions (How to leave etc.) http://www.jiscmail.ac.uk/