Foreword
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This document is developed in accordance with the rules given in GB/T 1.1-2020 Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents and GB/T 20001.4 Rules for drafting standards - Part 4: Test method standards.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing body of this document shall not be held responsible for identifying any or all such patent rights.
This document was proposed by the Field Committee for Chemical Materials Standardization of China Standards Committee for Materials and Testing Organizations (CSTM/FC05).
This document is under the jurisdiction of the Technical Committee for Standardization of Additives Related to Polymer Materials in Chemical Materials Field of China Standards Committee for Materials and Testing Organizations (CSTM/FC05/TC08).
Defoamer for fermentation industry -
Test method for defoaming and antifoaming performance
WARNING - Persons using this standard shall be familiar with normal laboratory practice. This document does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions.
1 Scope
This document specifies the test method for defoaming and antifoaming performance of defoamers used in fermentation industry.
This document is applicable to the test of defoaming and antifoaming performance of defoamers used in fermentation industry.
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 5749 Standards for drinking water quality
GB/T 6682-2008 Water for analytical laboratory use - Specification and test methods
GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgment of limiting values
GB/T 12579-2002 Determination of foaming characteristics of lubricating oils
GB/T 19541-2017 Feed materials - Soybean meal
GB/T 35885-2018 Brown sugar
3 Terms and definitions
No terms and definitions are listed in this document.
4 Principle
By simulating industrial biological fermentation, add the selected defoamer. Then test the defoaming and antifoaming performance of defoamers in fermentation systems.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 General requirements
6 Reagents and materials
7 Instruments and apparatus
8 Procedure
9 Calculation method for efficiency
Annex A (Informative) Drafting organizations and chief drafters
