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Proposed specifications from interested business operators for number‐based size distribution measured by EM
| Constituent particle size for titanium dioxide (E 171) | Measured by electron microscopy (Feret min) |
|---|---|
| Median diameter by number (nm) | > 100 nm |
| Percentage of constituent particles below 100 nm by number (%) | < 50% |
EM: electron microscopy.
