Vermiculite can be found in potting soil or purchased by itself in four different sizes for gardening with vermiculite. Germinate seeds using the smallest size of vermiculite as a growing medium and the largest size for improved soil aeration

Main size of Raw vermiculite 
0.**1mm,**2mm,**4mm,**7mm

Characteristics: high absorbency,good thermal insulation, low density and its natural refractory properties.

Usage

Good thermal insulation, low density and its natural refractory properties combine with ease of application to

make vermiculite a highly suitable material for use in steelworks and foundries,Vermiculite

is recognised as a material particularly suited for fire protection.

Not only is it lightweight, clean and easily poured around irregular shaped objects,

it also provides a good baffle against shocks caused by impact and improper handling.