Perlite-Vermiculite Seed Starter Soil Additive Aeration Volcanic Rock
Expanded Perlite
Perlite is a volcanic rock of the family of amorphous silica; its colour ranging between white and gray.
It comes in granules of different sizes and densities:
Fine perlite (1-3 mm)
Medium perlite (2-4 mm)
Horticultural Coarse perlite (3-6 mm & 4-8mm)
Character: Non-toxic, flavorless, lightweight, corrosion resisting, netural PH 6.5-7.5 etc.
What is the difference of Perlite & Vermiculite?
The Perlite is one of the best hydroponic growing mediums around. Used by itself or as a mixture with other mediums. Perlite is commonly used with vermiculite ( a 50 - 50 mix is a very popular medium), and is also one of the major ingredients of soiless mix's. perlite has good wicking action which makes it a good choice for wick-type hydroponic systems.
Vermiculite is another mined material. In it's natural state it resembles mica rock, but when quickly heated it expands due to the generation of interlaminar steam.
Vermiculite is most frequently used in conjunction with perlite as the two complement each other well. Vermiculite retains moisture (about 200% - 300% by weight), and perlite doesn't so you can balance your growing medium so that it retains water and nutrients well but still supplies the roots with plenty of oxygen. A 50/50 mix of vermiculite and perlite is a very popular medium for drip type hydroponic systems as well as ebb and flow systems.
Expanded Perlite
Chemical composition
Item | SiO2 | AL2O3 | Na2O | K2O | Fe2O3 | MgO | CaO |
Content (%) | 70-75% | 12-16% | 2.5-4.0% | 1.0-3.0% | 0.15-1.5% | 0.2-0.5% | 0.3-1.8% |
Particle sizes Analysis
Expanded Perlite--Main uses
Perlite is mixed in growing substrates but is also quite suitable as a substrate for hydroculture and culture systems.
It has a very low volume weight, it is totally incombustible and non toxic.
It will definitely not rot, is completely free of any pathogens and is not attracting any vermin or pest.
Furthermore, Perlite is Ph-neutral, sterile and odourless.
When mixed in a growing substrate, Perlite ensures an excellent balance between water and air,
it considerably improves the structure of the substrate and is very easy to use.
Expanded Perlite--Packaging & Shipping
Package | 100L bag, 300bags/20GP(30M3/20GP); 730bags/40HQ(73M3/40HQ) 1000L bag, 72M3/40HQ 1500L bag, 48bags/40HQ(72M3/40HQ) Pallet packing or as customer request. |
Shipping | 10-15 days after receipt the payment |
Payment | LC at sight or optional TT |
Free samples | Yes, but express fee should be paid by customers. We will pay you back if you place the order. |
Jeny
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