ISO 20647-2015 PDF

Full title and description

ISO 20647:2015 — Infant formula and adult nutritionals — Determination of total iodine — Inductively coupled plasma mass spectrometry (ICP‑MS). This international standard specifies a quantitative laboratory method using ICP‑MS for measurement of total iodine in powdered reconstituted and ready‑to‑feed infant formulas and adult nutritional products.

Abstract

ISO 20647:2015 defines an analytical procedure for the determination of total iodine content in infant formula and adult nutritional products by inductively coupled plasma mass spectrometry (ICP‑MS). The method covers reconstituted final products in the range 0.5 µg/100 g to 1 500 µg/100 g and ready‑to‑feed products from 2.5 µg/100 g to 1 000 µg/100 g. The method and its precision were validated through an interlaboratory study reported in the standard.

General information

• Status: Published (International Standard; marked for review/revision and expected to be replaced by a new draft DIS).
• Publication date: November 2015 (Edition 1, 2015).
• Publisher: International Organization for Standardization (ISO), prepared by ISO/TC 34/SC 5.
• ICS / categories: 67.050 (Food products — General).
• Edition / version: Edition 1 (2015). A revision has been progressed as ISO/DIS 20647 (a new edition in development).
• Number of pages: 13 (published PDF/print length as listed by ISO).

Scope

This standard applies to the quantitative determination of total iodine in infant formula and adult nutritional formula products. It covers powdered products to be reconstituted (measurement range 0.5–1 500 µg iodine per 100 g reconstituted product) and ready‑to‑feed products (2.5–1 000 µg/100 g) using ICP‑MS. The method includes sample preparation and validation data derived from an interlaboratory study.

Key topics and requirements

• Analytical technique: Inductively coupled plasma mass spectrometry (ICP‑MS) as the prescribed measurement method.
• Measurement ranges specified for reconstituted and ready‑to‑feed products (0.5–1 500 µg/100 g and 2.5–1 000 µg/100 g respectively).
• Sample preparation and digestion procedures to ensure total iodine recovery prior to ICP‑MS analysis.
• Precision and reproducibility performance based on interlaboratory study results (referenced in Annex A of the standard).
• Quality control and calibration requirements appropriate for trace‑element determinations by ICP‑MS.

Typical use and users

Laboratories performing regulatory, compliance, or product development testing for infant formula and adult nutritionals; quality control teams in manufacturers of infant and adult nutritional products; national food safety and public health laboratories monitoring micronutrient levels; and accreditation bodies assessing laboratory methods for trace element analysis.

Related standards

Standards and documents relevant to trace‑element analysis, food sampling and preparation, and method validation are typically consulted alongside ISO 20647:2015. ISO 20647:2015 is managed by ISO/TC 34/SC 5 and has a successor draft under development (ISO/DIS 20647) that will supersede the 2015 edition when published. Users should also consider related ISO methods for sampling and other nutrient determinations where applicable.

Keywords

Infant formula, adult nutritionals, iodine, total iodine, ICP‑MS, inductively coupled plasma mass spectrometry, trace elements, food analysis, method validation, ISO/TC 34/SC 5.

FAQ

Q: What is this standard?

A: ISO 20647:2015 is an ISO international standard that specifies a laboratory method (ICP‑MS) for the quantitative determination of total iodine in infant formula and adult nutritional products.

Q: What does it cover?

A: It covers sample preparation, digestion and ICP‑MS measurement procedures, defined measurement ranges for reconstituted and ready‑to‑feed products, and precision/reproducibility information from an interlaboratory study.

Q: Who typically uses it?

A: Analytical and quality control laboratories, manufacturers of infant and adult nutritional products, regulatory and public health laboratories, and accreditation bodies involved in food safety and nutrient monitoring.

Q: Is it current or superseded?

A: As published in November 2015, ISO 20647:2015 is a published international standard. ISO has reviewed it (confirmation noted in 2023) and a revision is in development (ISO/DIS 20647) that is intended to replace the 2015 edition; users should check ISO or national standards bodies for the latest status before relying on the standard for compliance decisions.

Q: Is it part of a series?

A: It is a standalone method standard under the work of ISO/TC 34/SC 5 (Food products — methods of analysis). While not part of a numbered multi‑part series, it is associated with other ISO standards covering food sampling, nutrient analysis and method validation in the same technical committee area.

Q: What are the key keywords?

A: Infant formula, adult nutritionals, iodine, total iodine, ICP‑MS, trace element analysis, food analysis, method validation.