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Perma-Guard Fossil Shell Flour (Diatomaceous Earth)

$ 3300
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Pure fresh water diatomaceous earth

Perma-Guard is the original and largest supplier of fresh water, food-grade diatomaceous earth for agriculture. Fossil Shell Flour® is a very pure grade used by certified organic farms and livestock, poultry, dairy, grain and seed operations.

Key things we want you to know

  • Why the source matters: only 4 of 600 US deposits meet FDA food-grade standards, and fresh water shells are harder and more consistent.
  • Bonus: a good source of silicon.
  • Tested: two heavy metals reports below.

Benefits & Features
  • What it is: The fossilized remains of microscopic shells created by one-celled plants called diatoms.
  • Food grade is rare: Out of 600 deposits in the US, only 4 are considered food grade by FDA standards. Other food grade deposits may contain more sediment and clay, which can clog the pores of the fossilized shells and reduce effectiveness.
  • Consistent shape: The diatom must be tubular with holes in the walls. Perma-Guard, with more than 40 years of experience, uses a grade of fossil shell flour that is extremely pure.
  • Fresh water source: Fresh water diatoms form a harder, less fragile shell. Salt water deposits contain a mix of diatom species with inconsistent shapes and sediments.

Lab Reports & Resources

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