ISO 6495-1:2015 PDF

Name: ISO 6495-1:2015 — Animal feeding stuffs — Determination of water-soluble chlorides content — Part 1: Titrimetric method
SKU: ISO 6495-1:2015
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Animal feeding stuffs — Determination of water-soluble chlorides content — Part 1: Titrimetric method

Название (английский):

ISO 6495-1:2015

Animal feeding stuffs — Determination of water-soluble chlorides content — Part 1: Titrimetric method

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 13
Дата публикации:: 24 июня 2015 г.
Издание:: ISO IS 6495 edition 1 version 1
ICS:: 65.120

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Описание (английский):

ISO 6495-1:2015 specifies a method for the determination of water-soluble chloride content, expressed as sodium chloride, of animal feeding stuffs. This method is applicable to animal feeding stuffs containing water-soluble chloride content, expressed as sodium chloride, ≥0,05 %.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 6495-1:2015 specifies a titrimetric method for determining the content of water‑soluble chlorides, expressed as sodium chloride (NaCl), in animal feeding stuffs. The method applies to feed samples with water‑soluble chloride content ≥ 0.05% (as NaCl). First published in 2015, this standard replaces the earlier ISO 6495:1999 and provides a validated laboratory procedure for chloride quantification in feed matrices.

Key topics and technical requirements

Principle: Dissolve chlorides in water, clarify solutions when organic matter is present, acidify with nitric acid and precipitate chloride as silver chloride using standard silver nitrate, then back‑titrate the excess silver nitrate with ammonium or potassium thiocyanate by Volhard’s method.

Applicability: For animal feeding stuffs containing ≥0.05% water‑soluble chloride (as NaCl).

Sample preparation:

Procedures for samples free from organic matter, and alternate prep for samples containing organic matter.
Special handling for cooked feeds, flax cakes/flour, mucilage‑rich or colloidal products (use of acetone decantation).
Use of Carrez I/II reagents, activated carbon, and clarification/filtration steps.

Reagents & apparatus: Requires analytical‑grade reagents (e.g., AgNO3, thiocyanate titrant, potassium chromate, nitric acid), volumetric glassware, burettes, rotary shaker, analytical balance and appropriate filters.

Calibration & standards: Preparation and standardization of sodium chloride, silver nitrate and thiocyanate standard solutions (molarities known to 1×10‑4 mol/L). Duplicate titrations must meet agreement criteria.

Quality aspects: Includes instructions for blank tests, expression of results, precision data (repeatability, reproducibility, interlaboratory testing) and required test reporting.

Applications and users

ISO 6495-1:2015 is used by:

Feed testing laboratories performing routine chloride analysis for quality control.

Feed manufacturers and ingredient suppliers checking salt content for formulation and regulatory compliance.

Regulatory authorities and inspection labs verifying declared feed composition.

Research labs studying mineral balance or salt intake in animal nutrition.

Practical benefits include standardized, reproducible chloride results using a well‑established titrimetric (Volhard) method, enabling consistent quality control and regulatory reporting.

Related standards

ISO 6497 - Animal feeding stuffs - Sampling (recommended sampling methods).

ISO 6498 - Animal feeding stuffs - Guidelines for sample preparation.

ISO 3696 - Water for analytical laboratory use (water grade requirements referenced).

Keywords: ISO 6495-1:2015, animal feeding stuffs, water-soluble chloride, titrimetric method, silver nitrate titration, Volhard method, NaCl determination, Carrez reagents, feed analysis.

ISO 6495-1:2015 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

Related standards

Технические детали

ISO 6495:1999

Animal feeding stuffs — Determination of water-soluble chlorides content

SIST EN ISO 6497:2005

Animal feeding stuffs - Sampling (ISO 6497:2002)

SIST EN ISO 6498:2012

Animal feeding stuffs - Guidelines for sample preparation (ISO 6498:2012)

SIST EN ISO 3696:1998

Water for analytical laboratory use - Specification and test methods (ISO 3696:1987)