Animal feeding stuffs. Determination of phytase activity Ingestion-build-189776 Why should you use BS

Why should you use BS EN IEC 61643‑331

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Animal feeding stuffs. Determination of phytase activity Ingestion-build-189776 Why should you use BS1 Scope This International Standard specifies the determination of phytase activity in feed samples. The method does not distinguish between phytase added as a feed additive and endogenous phytase already present in the feed materials. The method cannot be used to evaluate or compare the in vivo efficacy of the phytase product. It is not a predictive method of the in vivo efficacy of phytases present on the market as they can develop different in vivo