For how long PVP solution, once prepared, can be used?

01 June 2021 1 4K Report

I have made 2% PVP solution for the growth of nanoparticles. From this solution, I am taking small volumes for different synthesis. Please suggest me that for how long this solution can be used, for example, 10 days, one week, or should I make fresh solution every time when I start a synthesis?

Mantang He

One week.

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