GB/T 10288-2026 Test method for down and feather English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS
CCS
National Standard of the People's Republic of China
GB/T 10288-2026
Test method for down and feather
羽绒羽毛检验方法
Issue date: 2026-03-31 Implementation date: 2026-10-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Test Methods for Washed Down and Feather (Rough washed)
5 Test Methods for Washed Down and Feather (Finished washed)
5.1 Sampling and Specimen Preparation
5.2 Composition Analysis
5.3 Identification of Goose and Duck Down/Feather Types
5.4 Fill Power
5.5 Cleanliness
5.6 Oxygen Number
5.7 Fat Content (Soxhlet Extraction Method)
5.8 Odour (Constant Temperature Dry Olfactory Method)
5.9 pH
5.10 Moisture Content / Moisture Regain
6 Test Report
Annex A (Normative) Test Methods for Washed Down and Feather (Rough washed)
A.1 Sampling
A.2 Specimen Preparation
A.3 Composition Analysis
A.4 Cleanliness
Test methods for down and feather
1 Scope
This document describes the test methods for finished washed down and feather and rough washed down and feather, and defines related terms.
This document applies to the testing of finished washed down and feather for composition analysis, type identification, fill power, cleanliness, oxygen number, fat content, odour, pH and moisture content, as well as the testing of rough washed down and feather for composition analysis, cleanliness and appearance. It also applies to the testing of fill materials for various down and feather products, unless otherwise specified in relevant standards.
This document does not apply to the testing of blended products of down and feather with other fibres.
2 Normative References
The following documents are essential for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 6529 Textiles — Standard atmospheres for conditioning and testing
GB/T 6682 Water for analytical laboratory use — Specification and test methods
GB/T 7573 Textiles — Determination of pH of aqueous extract
GB/T 8170 Rules of rounding off for numerical values and expression and judgement of limiting values
GB/T 17685 Down and feather
GSB 16 2763 Standard sample photographs for down and feather
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in GB/T 17685 and the following apply.
3.1 moisture regain
The percentage of the difference in mass of a specimen before and after drying relative to its mass after drying.
4 Test Methods for Washed Down and Feather (Rough washed)
Shall be carried out in accordance with the provisions of Annex A.
5 Test Methods for Washed Down and Feather (Finished washed)
5.1 Sampling and Specimen Preparation
5.1.1 Sampling method
Samples may be taken using any of the following methods, and the specimens shall be representative:
—— Taken from temporary bales that have not yet been baled;
—— Taken from packaged bales;
—— Taken from finished products.
5.1.2 Sample quantity
5.1.2.1 Finished washed down and feather
For bulk finished washed down and feather, the sample quantity shall be determined according to the number of bales in each delivery lot (same type, same grade, same processing technique constitute one lot), and shall comply with the provisions of Table 1.
5.1.2.2 Down and feather products
The sample quantity for down and feather products shall be determined for each delivery lot (same type, same grade, same processing technique constitute one lot). Unless otherwise specified, the sample quantity shall comply with the provisions of Table 2.
5.1.3 Sampling requirements
5.1.3.1 For finished washed down and feather, samples shall be taken from the upper, middle and lower parts of each individual package.
5.1.3.2 Sampling method for down and feather products:
—— For large down and feather products with a nominal fill weight of 500 g or more per single sample, samples shall be taken from at least three different parts. For other down and feather products, the entire filling material shall be taken as the test specimen.
—— For heat sealed fabrics, the fabric should be torn along the heat sealed strip or the connecting line of the double layer fabric. For double layer fabrics, carefully cut the fabric along the connecting line of the double layers with a blade to avoid damaging the raw material quality.
—— For down and feather products with different specifications filled in layers or sections, samples shall be taken separately for testing and results shall be reported separately.
5.1.3.3 Specimens for moisture content/moisture regain testing shall be weighed on site immediately after sampling or placed in clean, dry, airtight containers and kept sealed during transport and transfer. Specimens for other test items may be placed in ordinary sample bags after sampling.
5.1.4 Test environment and specimen conditioning
The conditioning and testing processes for composition analysis, type identification and fill power shall be carried out in the standard atmosphere specified in GB/T 6529 [temperature (20 ± 2) °C, relative humidity (65 ± 4) %]. The specimens shall be conditioned for at least 24 h before testing.
The pre treatment processes of steam blowing and air blowing drying during the fill power test shall not be carried out in the standard atmosphere.
Other test items may be carried out under laboratory room temperature conditions.
5.1.5 Specimen preparation
5.2.2.1 Composition analysis of finished washed down and feather includes the separation of down clusters, down filaments, feather filaments, small feather segments, damaged waterfowl feathers, landfowl feathers, long feather segments, large feather segments and impurities.
5.2.2.2 Composition analysis shall be carried out in the following two steps:
—— Preliminary sorting: separate the down cluster/down filament/feather filament mixture, small feather segments, damaged waterfowl feathers, landfowl feathers, long feather segments, large feather segments and impurities;
—— Second step sorting: from the down cluster/down filament/feather filament mixture, separate down clusters, down filaments, feather filaments, or a mixture of down filaments and feather filaments. If other components such as small feather segments or impurities are still present during the second step sorting, they shall be further separated.
NOTE 1: If the specimen is pure feather segments, the second step sorting is not required.
NOTE 2: Down filaments, feather filaments and landfowl filaments refer to the parts that can be picked up with tweezers during the composition analysis process, typically longer than 4 mm.
NOTE 3: Finished washed down and feather generally do not contain skin flakes or sand. Impurities here include foreign matter such as skin flakes, small blood vessels, other fibres, as well as powdery material that falls onto the workbench during composition analysis.
5.2.2.3 The specimen shall be classified and separated according to the provisions of GSB 16 2763.
5.2.3 Specimen preparation
Condition the specimen for composition analysis under the standard atmospheric conditions specified in 5.1.4 for at least 24 h. Then weigh and record the initial mass, accurate to 0.0001 g.
5.2.4 Procedure
5.2.4.1 Preliminary sorting
Place the specimen and 7 beakers into the sorting box. Use tweezers to pick out the various types of feather segments. Then, gently brush the feather segments between the thumb and forefinger to remove any adhering components. Disassemble any agglomerated down into individual down clusters. Then place the complete small feather segments, damaged waterfowl feathers, landfowl feathers, long feather segments, large feather segments, down cluster/down filament/feather filament mixture, and impurities into separate beakers. During the preliminary sorting, try to pick out the small feather segments, landfowl feathers, etc., as completely as possible. For recycled down and feather, other fibres shall also be sorted out and placed in a separate beaker.
Standard
GB/T 10288-2026 Test method for down and feather (English Version)
GB/T 10288-2026 Test method for down and feather English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS
CCS
National Standard of the People's Republic of China
GB/T 10288-2026
Test method for down and feather
羽绒羽毛检验方法
Issue date: 2026-03-31 Implementation date: 2026-10-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Test Methods for Washed Down and Feather (Rough washed)
5 Test Methods for Washed Down and Feather (Finished washed)
5.1 Sampling and Specimen Preparation
5.2 Composition Analysis
5.3 Identification of Goose and Duck Down/Feather Types
5.4 Fill Power
5.5 Cleanliness
5.6 Oxygen Number
5.7 Fat Content (Soxhlet Extraction Method)
5.8 Odour (Constant Temperature Dry Olfactory Method)
5.9 pH
5.10 Moisture Content / Moisture Regain
6 Test Report
Annex A (Normative) Test Methods for Washed Down and Feather (Rough washed)
A.1 Sampling
A.2 Specimen Preparation
A.3 Composition Analysis
A.4 Cleanliness
Test methods for down and feather
1 Scope
This document describes the test methods for finished washed down and feather and rough washed down and feather, and defines related terms.
This document applies to the testing of finished washed down and feather for composition analysis, type identification, fill power, cleanliness, oxygen number, fat content, odour, pH and moisture content, as well as the testing of rough washed down and feather for composition analysis, cleanliness and appearance. It also applies to the testing of fill materials for various down and feather products, unless otherwise specified in relevant standards.
This document does not apply to the testing of blended products of down and feather with other fibres.
2 Normative References
The following documents are essential for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 6529 Textiles — Standard atmospheres for conditioning and testing
GB/T 6682 Water for analytical laboratory use — Specification and test methods
GB/T 7573 Textiles — Determination of pH of aqueous extract
GB/T 8170 Rules of rounding off for numerical values and expression and judgement of limiting values
GB/T 17685 Down and feather
GSB 16 2763 Standard sample photographs for down and feather
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in GB/T 17685 and the following apply.
3.1 moisture regain
The percentage of the difference in mass of a specimen before and after drying relative to its mass after drying.
4 Test Methods for Washed Down and Feather (Rough washed)
Shall be carried out in accordance with the provisions of Annex A.
5 Test Methods for Washed Down and Feather (Finished washed)
5.1 Sampling and Specimen Preparation
5.1.1 Sampling method
Samples may be taken using any of the following methods, and the specimens shall be representative:
—— Taken from temporary bales that have not yet been baled;
—— Taken from packaged bales;
—— Taken from finished products.
5.1.2 Sample quantity
5.1.2.1 Finished washed down and feather
For bulk finished washed down and feather, the sample quantity shall be determined according to the number of bales in each delivery lot (same type, same grade, same processing technique constitute one lot), and shall comply with the provisions of Table 1.
5.1.2.2 Down and feather products
The sample quantity for down and feather products shall be determined for each delivery lot (same type, same grade, same processing technique constitute one lot). Unless otherwise specified, the sample quantity shall comply with the provisions of Table 2.
5.1.3 Sampling requirements
5.1.3.1 For finished washed down and feather, samples shall be taken from the upper, middle and lower parts of each individual package.
5.1.3.2 Sampling method for down and feather products:
—— For large down and feather products with a nominal fill weight of 500 g or more per single sample, samples shall be taken from at least three different parts. For other down and feather products, the entire filling material shall be taken as the test specimen.
—— For heat sealed fabrics, the fabric should be torn along the heat sealed strip or the connecting line of the double layer fabric. For double layer fabrics, carefully cut the fabric along the connecting line of the double layers with a blade to avoid damaging the raw material quality.
—— For down and feather products with different specifications filled in layers or sections, samples shall be taken separately for testing and results shall be reported separately.
5.1.3.3 Specimens for moisture content/moisture regain testing shall be weighed on site immediately after sampling or placed in clean, dry, airtight containers and kept sealed during transport and transfer. Specimens for other test items may be placed in ordinary sample bags after sampling.
5.1.4 Test environment and specimen conditioning
The conditioning and testing processes for composition analysis, type identification and fill power shall be carried out in the standard atmosphere specified in GB/T 6529 [temperature (20 ± 2) °C, relative humidity (65 ± 4) %]. The specimens shall be conditioned for at least 24 h before testing.
The pre treatment processes of steam blowing and air blowing drying during the fill power test shall not be carried out in the standard atmosphere.
Other test items may be carried out under laboratory room temperature conditions.
5.1.5 Specimen preparation
5.2.2.1 Composition analysis of finished washed down and feather includes the separation of down clusters, down filaments, feather filaments, small feather segments, damaged waterfowl feathers, landfowl feathers, long feather segments, large feather segments and impurities.
5.2.2.2 Composition analysis shall be carried out in the following two steps:
—— Preliminary sorting: separate the down cluster/down filament/feather filament mixture, small feather segments, damaged waterfowl feathers, landfowl feathers, long feather segments, large feather segments and impurities;
—— Second step sorting: from the down cluster/down filament/feather filament mixture, separate down clusters, down filaments, feather filaments, or a mixture of down filaments and feather filaments. If other components such as small feather segments or impurities are still present during the second step sorting, they shall be further separated.
NOTE 1: If the specimen is pure feather segments, the second step sorting is not required.
NOTE 2: Down filaments, feather filaments and landfowl filaments refer to the parts that can be picked up with tweezers during the composition analysis process, typically longer than 4 mm.
NOTE 3: Finished washed down and feather generally do not contain skin flakes or sand. Impurities here include foreign matter such as skin flakes, small blood vessels, other fibres, as well as powdery material that falls onto the workbench during composition analysis.
5.2.2.3 The specimen shall be classified and separated according to the provisions of GSB 16 2763.
5.2.3 Specimen preparation
Condition the specimen for composition analysis under the standard atmospheric conditions specified in 5.1.4 for at least 24 h. Then weigh and record the initial mass, accurate to 0.0001 g.
5.2.4 Procedure
5.2.4.1 Preliminary sorting
Place the specimen and 7 beakers into the sorting box. Use tweezers to pick out the various types of feather segments. Then, gently brush the feather segments between the thumb and forefinger to remove any adhering components. Disassemble any agglomerated down into individual down clusters. Then place the complete small feather segments, damaged waterfowl feathers, landfowl feathers, long feather segments, large feather segments, down cluster/down filament/feather filament mixture, and impurities into separate beakers. During the preliminary sorting, try to pick out the small feather segments, landfowl feathers, etc., as completely as possible. For recycled down and feather, other fibres shall also be sorted out and placed in a separate beaker.
