LOOK INSIDE THE ROUTINE
Check the grinding mechanism.
A glass bottle does not establish what the grinding parts are made from. Look up the exact model and check the manufacturer’s description of its burrs and supporting components.
Research has found particle release from plastic grinding parts in tested mills. We have not tested the specific bottle pictured here.
One practical next step
Ask the manufacturer what contacts the salt inside the grinding assembly. Compare documented ceramic or salt-compatible metal mechanisms, or use already-ground salt to skip home grinding.
Read the full guide, research sources, and frequently asked questions
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