ISO 8967-2005 PDF

Full title and description

ISO 8967:2005 — Dried milk and dried milk products — Determination of bulk density. Specifies a standardized gravimetric procedure and test apparatus for determining the bulk density (tamped and/or untamped as applicable) of spray-dried or roller-dried milk powders and related dried dairy products, including whole, partly skimmed and skimmed milk powders, whey powders, buttermilk powders and milk‑based infant foods.

Abstract

ISO 8967:2005 (also published as IDF 134:2005) defines the principle, required apparatus, sampling and sample preparation, the step-by-step test procedure, calculation and expression of results, precision (repeatability and reproducibility) and reporting requirements for the bulk density determination of dried milk products. The method applies to both instant and non‑instant powders and to products where fat has been replaced or where roller‑drying has been used in place of spray‑drying.

General information

• Status: Published / Active (confirmed through periodic ISO review).
• Publication date: 7 December 2005 (ISO edition 2, 2005-12).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 67.100.10 (Milk and processed milk products).
• Edition / version: Edition 2 (2005).
• Number of pages: 6 (ISO published text length).

Scope

This standard specifies a method for determination of the bulk density of dried whole milk, dried partly skimmed milk and dried skimmed milk (instant or non‑instant). It is also applicable to dried whey, dried buttermilk and dried milk‑based infant foods and to powders where fat has been substituted or produced by roller‑drying rather than spray‑drying. The procedure covers sample preparation, measurement and calculation of bulk density and provides precision data and reporting requirements.

Key topics and requirements

• Definition of bulk density and when to use tamped versus untamped measurement modes.
• Required apparatus (cylindrical measuring vessel, funnel, tamping device where applicable, balance with specified accuracy).
• Sampling and sample preparation to obtain a representative test portion from packaged or bulk powder.
• Stepwise test procedure: filling, leveling/tamping (if specified), mass measurement and volume determination.
• Calculation and expression of results (mass per unit volume), including units and rounding rules.
• Precision statements (repeatability and reproducibility) based on inter‑laboratory data where provided.
• Test report content: identification of sample, test conditions, result(s), deviations from the standard method and any corrective notes.

Typical use and users

Applied in dairy quality‑control and R&D laboratories, production control at milk‑powder manufacturers, contract testing laboratories, regulatory and standards bodies, and by purchasers or specification writers who need an objective measure of powder density for packaging, reconstitution behaviour and product specification compliance.

Related standards

ISO 8967:2005 supersedes ISO 8967:1992 and is published in parallel as IDF 134:2005. Standards commonly referenced with or used alongside ISO 8967 include sampling and precision guidance standards (for example ISO 707 and ISO 5725) and other milk/milk‑products test methods maintained by ISO/TC 34/SC 5.

Keywords

dried milk, milk powder, bulk density, tapped density, untapped density, spray‑dried, roller‑dried, whey powder, buttermilk powder, IDF 134, milk‑based infant food.

FAQ

Q: What is this standard?

A: ISO 8967:2005 is an international standard that defines a test method to determine the bulk density of dried milk and related powdered dairy products.

Q: What does it cover?

A: It covers apparatus, sampling and sample preparation, the measurement procedure, result calculation, precision data and required information in the test report for bulk density measurements of milk powders and similar products.

Q: Who typically uses it?

A: Dairy manufacturers, laboratory analysts, quality managers, regulators, specification writers and testing laboratories use this standard for routine quality control, specification compliance and product characterization.

Q: Is it current or superseded?

A: ISO 8967:2005 is the second edition (published 7 December 2005) and replaced the 1992 edition. The 2005 edition has been confirmed in periodic ISO reviews and remains the published standard.

Q: Is it part of a series?

A: It is part of the body of ISO/IDF methods for milk and milk products (work from ISO/TC 34/SC 5) and is published alongside other ISO/IDF test methods (the IDF numbering indicates parallel publication by the International Dairy Federation).

Q: What are the key keywords?

A: Bulk density, milk powder, powder density, tapped/tamped volume, spray‑dried, roller‑dried, whey powder, buttermilk powder, IDF 134.