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Determination of gross energy of feeds - Bomb calorimetric method
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Basic data
| Standard ID | GB/T 45104-2024 (GB/T45104-2024) |
| Description (Translated English) | Determination of gross energy of feeds - Bomb calorimetric method |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | B46 |
| Classification of International Standard | 65.120 |
| Word Count Estimation | 6,65 |
| Date of Issue | 2024-12-31 |
| Date of Implementation | 2025-07-01 |
| Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
GB/T 45104-2024: Determination of gross energy of feeds - Bomb calorimetric method
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 65.120
CCSB46
National Standard of the People's Republic of China
Determination of total energy of feed - Oxygen bomb calorimetry
Released on 2024-12-31
2025-07-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
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 and coordinated by the National Feed Industry Standardization Technical Committee (SAC/TC76).
The drafting units of this document. Henan University of Technology, Henan College of Animal Husbandry and Economics, and Henan Zhongbiao Testing Service Co., Ltd.
The main drafters of this document are. Wang Jinrong, Tang Guifen, Wang Peng, Qiao Hanzhen, Gan Liping, Wang Haiyan, Liu Tengpeng, Duan Erzhen, Ji Xiangbo,
Li Xinfeng, Liu Kun, Duan Haitao, Zhao Xuefeng, and Zhao Linping.
Determination of total energy of feed - Oxygen bomb calorimetry
1 Scope
This document describes the oxygen bomb calorimetric method for the determination of gross energy in feeds.
This document applies to the determination of gross energy of compound feeds, concentrated feeds, concentrate supplements and feed ingredients.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 6682 Specifications and test methods for water used in analytical laboratories
GB/T 10647 Terminology of feed industry
GB/T 20195 Preparation of animal feed samples
3 Terms and definitions
The terms and definitions defined in GB/T 10647 apply to this document.
4 Principle
The heat generated by the complete combustion of the sample in an oxygen bomb with an oxygen pressure of 2.8MPa~3.0MPa causes the temperature of the calorimetric system to change.
Calculate the total energy based on the temperature change.
5 Reagents or materials
5.1 Water. GB/T 6682, grade 3 water.
5.2 Benzoic acid calorific value standard substance/standard sample.
5.3 Metal wire. Nickel-chromium wire with a diameter of 0.16 mm to 0.20 mm, or other suitable wire with good thermal characteristics during combustion.
5.4 Cotton thread. no wax, uniform thickness.
5.5 Oxygen. purity not less than 99.995%.
5.6 Combustion-supporting matrix. quantitative filter paper, lens cleaning paper, combustion bags, etc.
6 Instruments and Equipment
6.1 Analytical balance. accuracy 0.1 mg.
6.2 Electric constant temperature drying oven. temperature control accuracy 103℃±2℃.
6.3 Fully automatic calorimeter.
6.4 Combustion dish. Made of platinum, nickel-chromium steel or quartz. Bake at 103℃±2℃ for 30min before use and place in a desiccator for later use.
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