Is Perlite Safe for Carnivorous Plants?

A customer read on another website that perlite is alkaline and shouldn't be used in percentages higher than 20%. Since we recommend 50%, we decided to see for ourselves if perlite is alkaline or inert. It's inert.

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* Does Perlite Play a Role Fluoride Toxicity in Floricultural Crops?
https://hortscans.ces.ncsu.edu/upload...

* Ataman Chemicals: Perlite
https://www.atamanchemicals.com/perli...

* Perlite Institute
https://www.perlite.org/filtration/