The particle size of nano-level silver powder is usually between 20nm and 100nm. The performance of nano-silver powder is directly related to the particle size. The study found that the smaller the particle size, the higher the valence state, and the stronger the bactericidal performance.

What are the important factors affecting the performance of nano-silver powder?

Common metal activity sequence:

K Ca Ba Na Mg Al Mn Zn Cr Fe Co Ni Sn Pb Sb Be Cu Hg Ag Pt Au

As can be seen from the above sequence table, silver is an inactive metal. Among common metals, silver is the third most active from the bottom, which is also classified as an inactive metal.
But despite this, due to the nanoparticle effect, for the nano silver powder, it will also oxidize after a long time, thus affecting its performance. If it is used in sterilization, the sterilization effect will be affected to a certain extent.

How to store nano silver powder? It is recommended to do the following:

1. Make personalized packaging according to the one-time experimental amount, and strive to use it up at one time.

For example, if you buy 500g of nano-silver powder, if you can't use it up at one time, you can consider making a package of 100g*5 packs, which can be disassembled as needed.

2. If the package is not used up, it is recommended to seal it immediately and use it up in a short time.

3. The nano silver powder purchased from SAT NANO is packed in double-layer anti-static bags, and can be stored for at least 2 years in a ventilated, cool and airtight condition without unpacking.