| http://www.w3.org/ns/prov#value | - This procedure can be performed, for example, by dispersing perlite in an aqueous solution of a magnesium salt, such as magnesium sulfate, followed by the addition of an alkali, e.g. ammonium or sodium hydroxide, together with hydrogen peroxide or a soiid oxidizer such as ozone monopersulfate (KOSO4 H).
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