GB/T 45104-2024 Determination of gross energy of feeds - Bomb calorimetric method
1 Scope
This document describes the bomb calorimetric method in the determination of gross energy of feeds.
This document is applicable to the determination of gross energy of formula feeds, concentrated feeds, concentrate supplements and feedstuffs.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 6682 Water for analytical laboratory use - Specification and test methods
GB/T10647 Feed industry terms
GB/T 20195 Animal feeding stuffs - Preparation of test samples
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 10647 apply.
4 Principle
The heat generated by the complete combustion of the specimen in an oxygen bomb with an oxygen pressure of 2.8 MPa to 3.0 MPa causes the temperature change of the calorimetric system, and the gross energy shall be calculated according to the temperature change.
Contents
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents or materials
6 Apparatus
7 Samples
8 Test procedure
9 Test data processing
10 Precision
