1 Scope
This standard specifies a method for the determination of the Lovibond colour of animal and vegetable fats and oils.
This standard is applicable to the determination of the colour of animal and vegetable fats and oils.
2 Normative Reference
The following standard contains provision which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding corrigendum), or revisions of, any of these publications do not apply. However, all parties coming to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards. For undated references, the latest edition of the normative document referred to applies.
GB/T 15687 Oils and Fats - Preparation of Test Sample (GB/T 15687-1995, eqv ISO 661:1989)
3 Principle
The colour of the light transmitted through a known path length of liquid fat or oil is matched with the colour of the light originating from the same source transmitted through glass colour standards. The results are conventionally expressed in Lovibond units.
Foreword I
1 Scope 1
2 Normative Reference 1
3 Principle 1
4 Apparatus 1
5 Requirements for Operators 3
6 Sampling 3
7 Preparation of Test Sample 3
8 Procedure 3
9 Expression of Results 4
10 Precision 4
11 Test Report 4
Annex A (informative) Results of an Interlaboratory Trial 6
