Re: [ccp4bb] CCP4BB Digest - 19 Jun 2010 to 20 Jun 2010 (#2010-166)

2010-06-20 Thread Alexandra Deaconescu
Hi: I think having multiple angles is actually important as NOT all proteins are isotropic scatterers, and therefore show angle dependence. That is especially true for large MW or very extended proteins. If you work with small proteins, can buy the Nanostar which gives you both DLS/stati

Re: [ccp4bb] LS / RI detector systems

2010-06-20 Thread Kushol Gupta
Hi Tommy, While I cannot comment on the Viscotek or Varian/Agilent products, I can say a few things about the Wyatt product: We have a Dawn Heleos II 18-angle instrument with inline QELS here in the lab along with one of their older Optilab RI instruments. We use TSK columns for protein charac

[ccp4bb] LS / RI detector systems

2010-06-20 Thread Tommi Kajander
Dear All, I would like to ask people's comments on usage/preferences on different providers MALLS/RALS detectors and RI detectors (to combine with HPLC SEC) Mainly we are looking at Wyatt vs Viscotek (or perhaps Varian/Agilent now also) tetradetektors(or triple) detectors at the moment, i am n