bird-keeper Posted March 14, 2021 Share Posted March 14, 2021 Is SiO2 not considered an active ingredient that has to be listed on the SDS? I can't help but notice the SDS for OS and Hyper Seal are exactly the same, even though many swear they are different (and that Hyper Seal is OS with SiO2 added). Quote Link to comment Share on other sites More sharing options...
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