SIST ISO 1442:2024 PDF

Meat and meat products - Determination of moisture content - Reference method (ISO 1442:2023)

Название (английский):

SIST ISO 1442:2024

Meat and meat products - Determination of moisture content - Reference method (ISO 1442:2023)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 12
Дата публикации:: 30 мая 2024 г.
Издание:: ISO 1442:2023
ICS:: 67.120.10

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Описание (английский):

This document specifies two reference methods for the determination of the moisture content of meat and meat products: a direct drying method and a distillation method. The direct drying method is applicable to meat and meat products with low volatile substances in addition to moisture. The distillation method is applicable to meat and meat products with high volatile substances in addition to moisture.

Технические детали

Технический комитет: KŽP - Agricultural food products
SKU: SIST ISO 1442:2024

Abstract

Overview

ISO 1442:2023 - "Meat and meat products - Determination of moisture content - Reference method" specifies two validated reference methods for determining moisture in meat and meat products: a direct drying method and a distillation method. The standard defines procedures, required reagents and apparatus, sample preparation, calculation and reporting rules, and precision data to support reliable laboratory moisture analysis.

Key topics and technical requirements

Scope: Two reference approaches depending on sample volatility:
- Direct drying method - for products with low volatile substances besides water.
- Distillation method - for products containing significant volatile components (co‑distillation with toluene or xylene).
Sampling & sample prep:
- Recommended starting laboratory sample ≥ 200 g.
- Homogenize (mincer or cutter); thaw frozen samples at 15–25 °C without exceeding 25 °C.
- Store homogenized samples sealed and analyze promptly (refrigerate 4–7 °C if needed, within 24 h).
Direct drying method requirements:
- Mix 5–8 g test portion with clean, acid‑washed sand (3–4× mass).
- Dry at (103 ± 2) °C (electrical oven); initial heating 2 h, then repeat heating/cooling/weighing until constant mass (two successive weighings, 1 h apart, ≤ 0.1 % of test portion).
- Analytical balance to 0.001 g; desiccator and glass/porcelain/metal dishes required.
- Report moisture as % m/m, rounded to one decimal place.
Distillation method requirements:
- Co‑distill water with toluene or xylene using a moisture analyser; calculate moisture from collected water volume.
- Use reagents of analytical grade and water meeting ISO 3696.
Performance:
- The standard provides precision information (interlaboratory test results) and repeatability/reproducibility criteria (see Annex A).

Applications and users

ISO 1442:2023 is intended for:

Overview

Key topics and technical requirements

Scope: Two reference approaches depending on sample volatility:
- Direct drying method - for products with low volatile substances besides water.
- Distillation method - for products containing significant volatile components (co‑distillation with toluene or xylene).
Sampling & sample prep:
- Recommended starting laboratory sample ≥ 200 g.
- Homogenize (mincer or cutter); thaw frozen samples at 15–25 °C without exceeding 25 °C.
- Store homogenized samples sealed and analyze promptly (refrigerate 4–7 °C if needed, within 24 h).
Direct drying method requirements:
- Mix 5–8 g test portion with clean, acid‑washed sand (3–4× mass).
- Dry at (103 ± 2) °C (electrical oven); initial heating 2 h, then repeat heating/cooling/weighing until constant mass (two successive weighings, 1 h apart, ≤ 0.1 % of test portion).
- Analytical balance to 0.001 g; desiccator and glass/porcelain/metal dishes required.
- Report moisture as % m/m, rounded to one decimal place.
Distillation method requirements:
- Co‑distill water with toluene or xylene using a moisture analyser; calculate moisture from collected water volume.
- Use reagents of analytical grade and water meeting ISO 3696.
Performance:
- The standard provides precision information (interlaboratory test results) and repeatability/reproducibility criteria (see Annex A).

Applications and users

ISO 1442:2023 is intended for:

SIST ISO 1442:2024 PDF

Технические детали

Abstract

Overview

Key topics and technical requirements

Applications and users

Abstract

Overview

Key topics and technical requirements

Applications and users

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