02 February 2016 2 3K Report

Hi all, 

I observed severe leakage of gold nanoparticles with Sartorius Vivaspin filtration column (MWCO = 100,000) after repeated use for 5-6 times. These seems to be due to pore enlargement of the filtration membrane. Does anyone know how can I reduce the pore size so that gold nanoparticles will not leak anymore when reuse?

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