What is Perlite?
Perlite is a naturally occurring volcanic glass that is mined and processed for use in a variety of applications, including construction, horticulture, and industrial processing. It is formed when obsidian, a type of volcanic glass, is subjected to high heat and pressure. When it is heated to a high temperature, the water trapped within the glass expands, causing the glass to...
Portuguese 
English
Arabic
French
Spanish
Deutsch
Turkish
Dutch
Italiano
Russian
Romaian
Portuguese (Brazil)
Greek