In this paper,crosslinking Poly Vinylpyrrolidone(PV PP) wassynthesized.Treatment of oolong tea beverage with PVPP and treating con ditions were investigated.
Gatifloxacin eyedrops was prepared with benzalkonium as bacteriostat,NaCl as osmotic-pressure regulating agent and PVP as thickener:The content was determined with HPLC.