Qingdao Hongxu Filter Aid Co.,Ltd, supplies diatomaceous earth (DE), also known as diatomite, diatomite filter aid,diahydro, kieselguhr, kieselgur and Celite, is a sedimentary rock primarily composed of the fossilized remains of unicellular fresh water plants known as Diatoms.
The De has a high porosity, with lower density, larger surface area, strong absorption, good suspending performance, it has relative incompressibility and chemical stability without any poison and smell.

SPECIFICATION OF RS500
EQUIVALENT TO CELATOM FW 50/Celite535
PHYSICAL AND CHEMICAL PROPERTIES

Structure Flux-Calcined
Color White
G.E. Brightness 85
Sieve Analysis (Tyler)
% +150 mesh (>105 microns) 23
% +325 mesh (> 44 microns) ��.
Median Particle Diameter (microns) 42
pH (10% slurry 10
Free Moisture (max % H2O) 0.5
Density (1b/ft3) (g/l)
Wet Bulk 25 330-352
Dry Bulk 12 240
Permeability (Darcy)* 3.0-4.0
Specific Gravity 2.33
Refractive Index 1.46
CHEMICAL ANALYSIS
Ignition on loss% ?2.0
SiO2% ?89
Fe2O3% ?2.0
Al2O3% ?3.5
CaO% ?1.16
MgO% ?0.17
Pb mg/kg ?4.0
As mg/kg ?5.0