ISO 10248-1996 PDF

Full title and description

ISO 10248:1996 — "Fluid fertilizers — De-aeration of suspension samples by film disentrainment". This International Standard specifies a laboratory procedure for removing entrained air from suspension samples of liquid fertilizers using film disentrainment to prepare samples for physical testing.

Abstract

Describes a simple de-aeration technique (film disentrainment) for suspension samples intended for subsequent physical tests. The method is stated as not suitable where the sample contains more than a trace of free ammonia, where permanent decomposition occurs in the suspension, or where the sample is too viscous to form the required film.

General information

• Status: Published — International Standard (confirmed).
• Publication date: December 1996 (implementation date commonly listed as 19 December 1996).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 65.080 (Fertilizers).
• Edition / version: Edition 1 (1996).
• Number of pages: 1 (English edition; some national/adopted versions list 1–2 pages depending on formatting).

Key bibliographic and status details above are taken from the ISO record and cataloguing entries.

Scope

Specifies a procedure for the de-aeration of suspension samples of fluid fertilizers prior to physical testing to ensure consistent test conditions. The scope explicitly excludes samples that contain more than trace amounts of free ammonia, samples undergoing permanent decomposition, or samples that are too viscous to form the thin film required for the technique.

Key topics and requirements

• Definition and purpose of film disentrainment as a de-aeration technique for suspension samples.
• Sample suitability criteria (limits on free ammonia, decomposition, and viscosity).
• Basic procedural steps for sample handling and de-aeration prior to physical testing.
• Quality considerations to ensure representative and reproducible physical test samples.
• Applicability to routine QC and inter-laboratory physical testing of liquid fertilizers.

Typical use and users

Used by fertilizer manufacturers, quality-control and testing laboratories, research institutes working on fertilizer physical properties, and national standards bodies that adopt ISO methods. It is applied where consistent de-aeration of suspension samples is required before viscosity, density, sedimentation or other physical measurements.

Related standards

ISO 10248:1996 is part of the cluster of ISO documents dealing with sampling and physical testing of fluid fertilizers; several national and regional adoptions exist (for example EN/DIN/BS adoptions under EN ISO 10248 in the late 1990s/2000s). Related ISO documents addressing sample preparation and preliminary examination of fluid fertilizers include ISO 10249:1996 (preliminary visual examination and preparation of samples for physical testing).

Keywords

ISO 10248, fluid fertilizers, de-aeration, suspension samples, film disentrainment, sample preparation, physical testing, fertilizer quality control.

FAQ

Q: What is this standard?

A: ISO 10248:1996 is an International Standard that defines a laboratory procedure for de-aerating suspension samples of fluid fertilizers by film disentrainment so they are suitable for subsequent physical testing.

Q: What does it cover?

A: It covers a specific de-aeration method (film disentrainment), the intended sample types (suspensions of fluid fertilizers), and the limitations on sample composition and condition (e.g., low free-ammonia, non-decomposing, not overly viscous).

Q: Who typically uses it?

A: Fertilizer producers, QC and testing laboratories, research bodies concerned with physical properties of liquid fertilizers, and standards organizations adopting the ISO procedure for national/regional use.

Q: Is it current or superseded?

A: ISO lists ISO 10248:1996 as published and confirmed following periodic review; the ISO record indicates that this edition was last reviewed and confirmed in 2024, so the 1996 edition remains current unless a new revision is published. National/adopted versions (EN, BS, DIN, etc.) have been published in subsequent years as direct adoptions.

Q: Is it part of a series?

A: It is one of several ISO documents addressing sampling, preparation and physical testing of fluid fertilizers (for example ISO 10249:1996 on preliminary visual examination and sample preparation). Some national and regional standards bodies have adopted the ISO text into EN/BS/DIN/UNE publications.

Q: What are the key keywords?

A: Fluid fertilizers; de-aeration; suspension samples; film disentrainment; sample preparation; physical testing; fertilizer QC; ISO 10248:1996.