100% Natural, food-grade diatomaceous earth for filtration and other applications. This grade of diatomaceous earth has an average particle size of 10 microns and an average pore diameter of 1.2 microns resulting in a fine powder. Diatomaceous earth, also known as silicone dioxide, consists of the fossilized remains of diatoms which are single-cellular oceanic algae.

Net Weight: 1lb (454g)

Details:
Contains: Diatomaceous earth (silicon dioxide)
Median Particle Size: 10 microns
Median Pore Size: 1.2 microns
325 Mesh Screen Reside: 2%
Refractive Index: 1.43
Specific Gravity: 2.2
Surface Area: 35.7m2/gm
Refractive Index: 1.43