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ISOLITE ® CG- Porous Ceramic
( Pronounced EE-SO-LITE )
WHAT IS IT? and - HOW DOES IT WORK?
ISOLITE CG is a porous ceramic consisting of up to 74% pore space that conserves water, decreases compaction, has a positive effect on microbial activity, soil moisture content, soil permeability, nutrient retention, and provides robust root growth. It holds water against evaporative and gravitational loss and increases plant-available moisture and oxygen in the root zone, thereby reducing irrigation requirements and promoting the production of healthy root tissue.
ISOLITE CG resists compaction due to traffic and will not be affected by freezing temperatures. It is an extremely stable material and will not shrink, swell, or break down in the soil. It is not a significantly charged particle (electrical conductivity of .1 to .4 mmhos/cm), has no interaction with sodium, and in fact, helps to leach salts from the soil. In addition, ISOLITE CG has the propensity to buffer soil temperatures.
ISOLITE CG is used for wetland plantings to add optimum pore space and a tremendous amount of surface area (4.6 m²g—1 B.E.T method.) High surface area, combined with large enough pores for microbes are the attributes that are needed for a good media for the immobilization of microorganisms. Generally, microbes require pore space diameter > .5µ (micron) in which to live. Most of ISOLITE’S pore space diameter is between 1µ and 4µ. Most other porous ceramics have pores that are < .5µ. The ISOLITE CG is the “condominium” for the microbes and the pollutant is the food. ISOLITE CG creates a good environment for the biological breakdown of pollutants into elemental (simplest) forms.
ISOLITE CG is a permanent soil amendment that is extruded and kiln-fired. In sandy-type soils it holds and makes water available to plants, while in clay-type soils, ISOLITE CG opens up the soil and allows for better percolation rate. It is a one-time application. Note: Many other product representatives will often tell you their product is cheaper than ISOLITE CG, but often fail to tell you their application rate is three times as high. Note: ISOLITE CG is diatomaceous earth-based. Many other products are clay-based -- look at C.E.C. and pore size distribution. The majority of the pores in any product for soil amending should be larger than 1 micron. If the pores are smaller than this number, microbes will not be able to get into them and water release may be difficult.
ISOLITE CG Architectural Specifications:
Porous Ceramic: Main component is diatomaceous earth
Extruded & cylindrical, 1 mm, 2 mm, 4 mm, or 6 mm in diameter
Specific Surface Area - B.E.T. method - 4.6 m/g - Mercury Intrusion Method - 20.42 m/g
Bulk Weight is approximately 850 pounds per cubic yard, or 32 pounds per cubic foot
Porosity: 74% (minimum of 70%)
All other chemicals (clay) present equal less than 5%, Ca0 <2.0%, Mg0, K20, Na0 and Ti02
*Pore Size: > 0.5 microns = 6% -- 0.5 to 1 microns = 12% -- 1 to 3 microns = 43%-- <3 microns =39%***
Pore Characteristics: Continuous, open ended and interconnecting (no dead-end pore space)
Bulk Density: <0.745 g/cc (compared with 1.2g/cc for fired clay,1.4g/ cc for soil, and 2.0 for Zeolite)
Particle Density: 2.27 (compared with 2.56 for sand)
Cation Exchange Capacity: <2 meq/100g
Electrical Conductivity: <0.5 mmhos/cm. (Isolite has no interaction with sodium and is not a significantly charge particle)
Chemically Inert: Has no direct affect on soil chemistry (pH is 7)
ASTM-88 degradation % loss - < 3%
ISOLITE CG, porous ceramics, equates to more efficient use of our resources (water & fertilizer) in any type of soil or soiless mix.