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Ultrafine white tourmaline mask electret masterbatch coating with 1250 mesh white tourmaline
test item | standard request | detection result |
SiO2 | 34~37 | 36.72 |
Al2O3 | 30~32.5 | 31.08 |
K2O | 0.32~0.58 | 0.48 |
Na2O | 1.5~2.3 | 1.90 |
MgO | 8.5~9.63 | 8.71 |
Fe2O3 | 3~5.2 | 4.77 |
B2O3 | 7~10 | 9.72 |
CaO | 0.77~1.20 | 0.99 |
TiO2 | 0.6~0.79 | 0.76 |
Li2O | 0~0.4 | 0.1 |