| 11. | It is often grown in a peat : sand or perlite soil.
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| 12. | No matter where it is mined, all perlite is the same chemically.
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| 13. | Perlite is a volcanic rock " popped " at high temperature.
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| 14. | I add compost and round out the mix with peat moss and perlite.
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| 15. | The popularity of perlite usage as a filter medium is growing considerably worldwide.
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| 16. | Some vermiculite exfoliators blend with lower cost perlite also.
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| 17. | It is sometimes mixed with lightweight aggregates, such as perlite or vermiculite.
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| 18. | There was also limited perlite and plastic products that moved along the line.
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| 19. | Perlite is due to hydration of glass causing expansion and not necessarily devitrification.
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| 20. | He founded a perlite business which he sold to a major agricultural supplier.
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