Functional Grade™ (FG™) Purified: Azide-free, sterile-filtered, and endotoxin < 0.001 ng/µg (unless otherwise noted).
Functional Grade™ (FG™) Biotin: Azide-free, sterile-filtered, and endotoxin < 0.05 ng/µg.
Purified: Contains azide, not sterile-filtered, and not endotoxin tested.
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