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GB/T 45358-2025Temperature measurement method in perishable foods cold chain (English PDF)

易腐食品冷藏链温度检测方法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

February 28, 2025

Implementation date

September 1, 2025

Scope

GB/T 45358-2025 is the English-translated version of 易腐食品冷藏链温度检测方法.

GB/T 45358-2025 is the Chinese national standard covering measuring how cold a perishable load really is — the ambient air temperature at each link from processing to sale, the surface temperature of the product or its pack, the core temperature and the nondestructive way of taking it, the sampling, the test steps and the data processing, and the time constant of the probe, since a value read before the sensor has settled describes the probe and not the food. First edition, under the China National Light Industry Council. In force from 1 September 2025. Issued on 28 February 2025, it has been in force since 1 September 2025.

Document preview — GB/T 45358-2025

National Standard of the People's Republic of China

ICS: 17.200
Classification: N 11

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

PrefaceIII
1 Scope1
2 Normative references1
3 Terms and Definitions1
4 Instruments and Equipment2
5 Sample3
6 Test requirements3
7 Test Step4
8 Measurement data processing5
9 Test Report5

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document was proposed by China Light Industry Federation.

This document is under the jurisdiction of the National Technical Committee on Refrigeration Standardization (SAC/TC119).

This document was drafted by: Guangzhou University, Huashang International Engineering Co., Ltd., China Refrigeration Society, Jiangsu Jingchuang Electric Co., Ltd.

Beijing Shounong Food Group Co., Ltd., Tianjin University of Commerce, Binglun Environmental Technology Co., Ltd., Qingdao Hairong Commercial Cold Chain Co., Ltd. Limited company.

The main drafters of this document are: Liu Guanghai, Yin Congxu, Yang Yifan, Wang Dan, Tang Junjie, Xie Ruhe, Li Chaofei, Liu Bin, Wang Liqun, Zou Yifeng, Xue Xueming.

Temperature detection method for perishable food cold chain

1 Scope

This document specifies the testing requirements for the temperature of perishable food and the ambient air temperature in each link of the cold chain.

Method for measuring surface temperature and center temperature of products.

This document applies to the ambient air temperature, perishable food temperature and other related information of the cold chain processing, storage, transportation and sales links.

The surface temperature of the product or its packaging and the core temperature of perishable food are tested. The temperature testing method for other goods circulating through the cold chain is as follows. implement.

2 Normative references

GB/T 21001.2

GB/T 22918

GB/T 30103.1

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Cold chain

Using refrigeration technology as the main means to maintain the quality of perishable food and keep it at an appropriate temperature from production to consumption system.

3.2 perishable food

Food that is easily perishable.

Note. Such as meat, eggs, milk, aquatic products, fruits, vegetables, cold drinks, frozen foods, etc.

3.3 Intermediate check

In order to ensure the validity and reliability of the test results, a self-check of the temperature measuring instrument is performed between two periodic verifications (calibrations).

3.4 time constant

t90 When the temperature to be measured changes step by step, the time required for the temperature sensing element to measure the value to reach 90% of the final reading.

3.5 Nondestructive measurement

A form of measurement that does not cause damage to perishable food or its packaging under specified conditions and requirements.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 21001.2

Editions of GB/T 45358

Edition	Title	Revision	Status
GB/T 45358-2025	Temperature measurement method in perishable foods cold chain	current edition	Current

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