Usage examples (39)

• These materials (such as diatomite, pumice, expanded clay and shale, etc.) may be used in place of perlite without losing any of the benefits that perlite provides.
• Sediment from the years when the drill site was covered by open ocean are made of diatoms, tiny marine plankton ( "diatomite").
• The United States produces much of its own diatomite material.
• In this situation, the diatomite removes bacteria and protozoa.