The content of Bio-silicon determined by Gelatin Coagulation Gravimetric Method:

*The international standards of content were adopted by SGS // GB/T5009.3-2016

The formula of Gelatin Coagulation Gravimetric Method:

The purity of Biological silicon calculate on the W1 mass fraction of SiO2,  the numerical value in %, a calculation based on formula A.1

W1=(M1-M2)/M0×100% ….. A.1

* M1 — Sample residue and Mass of nickel crucible（g）.

M2 — Mass of nickel crucible（g）.

M0 — Mass of sample（g）

Use the arithmetic mean value Of the Parallel result, the absolute difference of two parallel results should not matter than 0.2%.