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.
All the technical contents of this standard are mandatory.
This standard was drafted according to the rules given in GB/T 1.1-2009.
This standard supersedes "Wool" (GB 1523-1993).
There have been some significant changes in this standard over GB 1523-1993 in the following aspects:
- The terminologies and definitions of the important standard - "Sheep Wool" were revised again;
- "Category and class" in technical requirements were changed to "model and specification", and the technical requirements were detailed;
- The requirements of faulty wool and vegetable matter content were added;
- The allowable content of each model of coarse wool hair was defined, and the operability of this standard was enhanced;
- The calculation methods for wool base and vegetable matter base were added;
- The clean wool content and skirting wool content of the wool with specification of A or B were specified.
This standard was proposed by and is under the jurisdiction of China Fiber Inspection Bureau.
Drafting organizations of this standard: China Fiber Inspection Bureau, National Animal Husbandry Station, All China Federation of Supply and Marketing Cooperatives, Department of Inspection Supervision of AQSIQ, China Wool Textile Association, Nanjing Wool Market, Jiangsu Sunshine Group Co., Ltd., Shanghai Shenyi Wooltop Co., Ltd., Wuxi Xiexin Group Co., Ltd., Inner Mongolia Autonomous Region Fiber Inspection Bureau, Jiangsu Fiber Inspection Bureau and Xinjiang Uygur Autonomous Region Fiber Inspection Bureau.
Chief drafters of this standard: Du Shuying, Wang Xiaoping, Mao Jianxin, Ma Jianyuan, Yi Feng, Zhang Feng, He Liang, Zhao Ying, Chen Gang, Song Zhenxiang, Liu Zhenjiang and Liu Changchun.
This standard was firstly issued in 1993 and is revised for the first time.
Sheep Wool
绵羊毛
1 Scope
This standard specifies the model, specification (grade), technical requirements, inspection methods, inspection rules, and packaging, marking, storage and transportation of sheep wool.
This standard is applicable to quality determination of sheep wool (including superfine sheep wool, fine sheep wool, medium fine sheep wool, improved sheep wool and native sheep wool) during production, transaction, processing, quality supervision and import and export inspection.
2Normative References
The following documents for the application of this document are essential. Any dated reference, just dated edition applies to this document. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 6976 Test Method for Measure Length of the Wool Staple Natural Formation
GB/T 8170 Rules of Rounding off for Numerical Values & Expression and Judgement of Limiting Values
GB/T 10685 Wool - Determination of Fiber Diameter - Projection Microscope Method
GB/T 14270 Test Method for Fiber Type Content of Hair Fibers
GB/T 21030 Test Method for the Mean and Distribution of Fibre Diameter of Wool and Other Animal Fibre - Optical Fibre Diameter Analyser (OFDA)
GB/T 27629 Determination of Breaking Tenacity of Animal Fibre Bundles
IWTO-12 Measurement of the Mean and Distribution of Fibre Diameter Using the Sirolan-Laserscan Fibre Diameter Analyser
3Terminologies and Definitions
For the purposes of this document, the following terminologies and definitions apply.
3.1
Sheep wool
Wool fibre growing on sheep body, which is referred to as wool.
3.2
Superfine wool
Homogeneous fleece with mean fibre diameter of 19.0 μm or above.
3.3
Fine wool
Homogeneous fleece with mean fibre diameter of 19.1 μm~25.0 μm.
3.4
Medium fine wool
Homogeneous fleece with mean fibre diameter of 25.1 μm~55.0 μm.
3.5
Improved wool
Wool fibre growing on the crossbred sheep in the process of improvement but having not yet reached homogeneous level.
3.6
Native wool
Wool fibre growing on the sheep which has not yet been improved and has the characteristics of primitive breeds.
3.7
Fleece wool
Wool obtained from live sheep, interconnecting between staples and in tight net form.
3.8
Greasy wool
Wool without treatment of washing, solvent degreasing, carbonization, etc.
3.9
Quality number
Corresponding fineness characteristic index of wool specified by the mean fibre diameter (μm) (see Appendix A).
3.10
Coarse wool hair
Coarse wool refers to the wool fibre in diameter of 52.5 μm or above. Cavity hair refers to the wool fibre of medullary cavity, of which the length is 25mm or above in the projected image by 500× microscope.
3.11
Kemp hair
Coarse wool in oblate cross section and U shape and with developed medulla and very thin or no cortical layer, of which the fibres are dry, white, vulnerable and easily broken, and hard to be dyed.
3.12
Homogeneous fleece
Wool composed of the wool fibres of the same type.
3.13
Partial homogeneous fleece
Among the staples on a fleece wool, most of them are in homogeneous fleece pattern and small part of them are in heterogeneous fleece pattern.
3.14
Heterogeneous fleece
Wool composed of the wool fibres of the different types.
3.15
Heterotypical hair
Wool containing two kinds of fibre forms, i.e., medullated wool and non-medullated wool, on one stick of wool fibre.
3.16
Skirting wool
Wool cut off from the edge of fleece wool and obviously different from the main body fleece.
3.17
Head leg and tail wool
Wool cut from the head, leg and tail part of sheep.
3.18
Non-wool fibre
Other fibres blended in wool fibre.
3.19
Second cuts
Wefty wool repeatedly cut off during wool clipping.
3.20
Faulty wool, defective wool
Defective wool, including: stamped wool, canary stained wool, dung stained wool, burry wool, heavy cotted wool, coloured wool, dermatitis and acariasis wool, and tender wool.
3.20.1
Stamped wool
Stained wool for the purpose of marking on sheep body, e.g., dyed wool, tar-stained wool, painted wool, used oil-stained wool, and other colour-stained wool.
3.20.2
Canary stained wool
Wool being stained to become yellow and with thestained part exceeding more than 50% of the staple length.
3.20.3
Dung stained wool; dag wool
Wool being seriouslystained by dung.
3.20.4
Burry wool
Wool containing such area concentrated with vegetable grass.
3.20.5
Heavy cotted wool
Wool containing such wool fibres which are in cotted form, will not be in single fibres and have severe reduction of strength if being torn.
3.20.6
Coloured wool
Heterochromous wool contained in wool fibres.
3.20.7
Dermatitis and acariasis wool
Wool obtained from the sheep having dermatitis and acariasis, with scab or scurf.
3.20.8
Tender wool
Wool containing such a part of fibres with obvious small diameter and strength due to such factors as malnutrition or disease during the growth of sheep.
3.21
Yield
Percentage of the conventional mass of cleaned wool to the mass of greasy wool.
3.22
Clean wool content
Percentage of the corrected value of absolute dry mass of wool after being cleaned and cleared of impurities, per conventional moisture regain and conventional grease content, to the mass of greasy wool.
3.23
Lot sample
Wool sample that taken from bulk goods or batched goods for trading.
3.24
Subsample
Sample being randomly taken from the lot sample to represent the lot sample.
3.25
Wool base
Percentage of the absolute dry mass of wool free from any impurities to the mass of subsample.
3.26
Vegetable matter base
Percentage of the absolute dry mass of wool free from such vegetable matters as ash and burr of ethanol extractives to the mass of subsample.
3.27
Test specimen
Sample for test, which randomly taken from the dry and cleaned subsample.
3.28
Total alkali-insoluble matter
All the alkali-insoluble matters free from ash and ethanol extractives, which are expressed in the percentage to the absolute dry mass of test specimen.
3.29
Ethanol extractives
Wool grease and other matters soluble via extraction with ethanol as solvent, which is expressed in the percentage to the absolute dry mass of test specimen.
3.30
Ash
Residue of test specimen after being heated, burnt and incinerated at 750℃±50℃, which is expressed in the percentage to the absolute dry mass of test specimen.
3.31
Fibre diameter
Degree of fineness of wool fibre, which is expressed in the diameter of wool fibre (μm).
3.32
Mean fibre diameter
Mean of wool fibre diameter.
3.33
CV of mean fibre diameter
Variation degree of the diameter of wool fibre.
3.34
Staple length
Linear distance between the mean value point at top end and the root end of a bundle of wool fibres at natural crimp condition.
3.35
Mean staple length
Arithmetic mean value of the staple length of wool fibres at natural crimp condition.
3.36
CV of mean staple length
Variation degree of the mean staple length of wool fibres at natural crimp condition.
4Technical Requirements
4.1 The homogeneous wool shall be classified by model and specification, as detailed in Table 1.
Table 1 Classification of Homogeneous Wool by Model and Specification
Model Specification Assessment indexes
Range of mean diameter/μm Length Quantity percentage of coarse wool hairs or kemp hairs/%
≤ Mass fraction of faulty wool /%
≤ Content of vegetable matter/%
≤
Mean staple length/mm
≥ Minimum staple length/mm
≥ Quantity percentage of shortest staples/%
≤
YM/14.5 A ≤15.0 70 40 2.5 Coarse wool hair
0.0 0.5 1.0
B 65
C 50
YM/15.5 A 15.1~16.0 70 1.0
B 65 1.5
C 50
YM/16.5 A 16.1~17.0 72 1.0
B 65 1.5
C 50
YM/17.5 A 17.1~18.0 74 1.0
B 68 1.5
C
50
YM/18.5 A 18.1~19.0 76 1.0
B 68 1.5
C 50
YM/19.5 A 19.1~20.0 78 1.0
B 70 1.5
C 50
YM/20.5 A 20.1~21.0 80 1.0
B 72 1.5
C 55
YM/21.5 A 21.1~22.0 82 50 3.0 2.0 1.0
B 74 1.5
C 55
YM/22.5 A 22.1~23.0 84 1.0
B 76 1.5
C 55
YM/23.5 A 23.1~24.0 86 1.0
B 78 1.5
C 60
YM/24.5 A 24.1~25.0 88 50 3.0 Coarse wool hair
0.0 2.0 1.0
B 80 1.5
C 60
YM/26.0 A 25.1~27.0 90 60 4.5 Kemp hair
0.3 1.0
B 82 1.5
C 70
YM/28.0 A 27.1~29.0 92 1.0
B 84 1.5
C 70
YM/31.0 A 29.1~33.0 110 70 1.0
B 90 1.5
YM/35.0 A 33.1~37.0 110
B 90 1.0
YM/41.5 A 37.1~46.0 110 1.5
B 90
YM/50.5 A 46.1~55.0 110 1.0
B 90 1.5
YM/55.1 A ≥55.1 60 - - Kemp hair
1.5 -
B 40 - - Kemp hair
5.0 -
4.2The technical requirements of homogeneous wool are as follows:
a)The technical requirements of improved wool are detailed in Table 2.
Table 2 Technical Requirements of Improved Wool
Grade Mean staple length /mm Quantity percentage of coarse wool hairs or kemp hairs/%
Improvement Grade I ≥60 ≤1.5
Improvement Grade II ≥40 ≤5.0
b) Native wool shall comply with the relevant standards.
4.3During subjective assessment of the model and specification of wool, the assessment scope may cover respectively one grade higher and lower, and the objective inspection results shall prevail in case of any dispute.
4.4The wool with staple strength of 25N/ktex~20N/ktex is tender wool and less than 20N/ktex is severely tender wool.
4.5The clean wool content shall be marked according to the actual inspection result.
4.6The mass fraction of skirting wool shall be less than or equal to 1.5%.
4.7Coloured wool shall be separately packaged and properly described.
4.8Loose wool and skirting wool shall be separately packaged and properly described.
4.9Head leg and tail wool, burry wool and other valuable faulty wool shall be separately packaged and properly described.
4.10Stamped wool and seriously stained wool shall be picked out, separately packaged and properly described.
5Inspection Methods
5.1Sampling
5.1.1Sampling methods
5.1.1.1Extraction of quality samples
Quality samples shall be taken by unpacking way. The samples sufficient to represent the quality of this batch of wool shall be randomly taken from both ends and the middle of wool bale respectively.
5.1.1.2Extraction of lot samples
The wool bales for inspection shall be weighed one by one and undergo core drilling. The core drilling direction shall be parallel to the packing direction of wool bale or perpendicular to the piling direction of fleece wool, the drilling depth shall be larger than 50% of the length of wool bale, and the distance between the drilling hole and the edge of wool bale shall be larger than 75mm. All the drilled core samples shall be weighed within 8h, with the mass value accurate to 0.1g. The drilled core samples shall be cleared off all the packaging materials and shall be placed in sealed container. The weighed mass value of lot sample shall be recorded as W.
5.1.1.3Extraction of subsamples
After being weighed, the lot sample shall be mixed mechanically or manually. After being adequately and uniformly mixed, the sample shall be divided. Lot sample shall be spread on workbench, with a thickness of 30mm~60mm, and then shall be divided into 16 equal parts by dichotomy and quartation, etc., and totally 200g sample shall be randomly taken from these parts to obtain 5 subsamples totally. Multi-point sampling method may also be adopted, i.e., uniformly finding 20 points on the spread sample and taking samples from these points, then turning over the sample with reverse side facing upwards, uniformly finding 20 points and taking sample until the sample mass is 200g, and obtaining 5 subsamples. The rest part shall be preserved as backup sample.
The subsamples and the residual sample shall be weighed, with the mass value accurate to 0.1g. The sum of the mass of 5 subsamples and that of residual sample is Wb. W/Wb is the mass correction factor of subsamples.
5.1.2Sampling quantity
5.1.2.1 Quality sample
One bale shall be taken from every 20 bales, from which 1kg sample shall be taken. If the bale quantity is less than 20, they still shall be regarded as 20 bales. For those with quantity larger than 100, the quantity of sampled bales shall be increased by 1 bale per 30 or below bales of the increase of total bale quantity. The total mass of each lot of sample shall be at least 15kg. The wool quality samples taken shall be weighed and the mass value shall be recorded as Wp.
5.1.2.2Lot sample
The total mass of lot sample taken by core drilling shall be at least 1,200g.
5.1.2.3Subsample
The mass of subsamples taken shall be 200g.
5.2Inspection
5.2.1 Fibre diameter
The fibre diameter may be subjectively judged in the link of acquisition, while it shall be subject to the objective inspection result in case of any dispute.
5.2.2Natural length of staple
The inspection shall be carried out according to GB/T 6976.
5.2.3 Staple strength
The inspection shall be carried out according to GB/T 27629.
5.2.4Coarse wool hair or kemp hair content
The inspection shall be carried out according to GB/T 14270.
Foreword II
1 Scope
2 Normative References
3 Terminologies and Definitions
4 Technical Requirements
5 Inspection Methods
6 Inspection Rules
7 Inspection Certificate
8 Packaging, Marking, Storage and Transportation
Appendix A (Informative) Corresponding Values of Wool Diameter and Quality Number
Appendix B (Informative) Determination of the Influence of Flotage and Convection Effect
Appendix C (Informative) Calibration of Pneumatic Tester
绵 羊 毛
1 范围
本标准规定了绵羊毛的型号、规格(等级)、技术要求、检验方法、检验规则以及包装、标志、储存和运输。
本标准适用于绵羊毛(包括超细绵羊毛、细绵羊毛、半细绵羊毛、改良绵羊毛、土种绵羊毛)的生产、交易、加工、质量监督和进出口检验中的质量鉴定。
2规范性引用文件
下列文件对于本文件的应用是必不可少的。凡是注日期的引用文件，仅注日期的版本适用于本文件。凡是不注日期的引用文件，其最新版本(包括所有的修改单)适用于本文件。
GB/T 6976羊毛毛丛自然长度试验方法
GB/T 8170数值修约规则与极限数值的表示和判定
GB/T 10685羊毛纤维直径试验方法 投影显微镜法
GB/T 14270毛绒纤维类型含量试验方法
GB/T 21030羊毛及其他动物纤维平均直径与分布试验方法 纤维直径光学分析仪法
GB/T 27629毛绒束纤维断裂强度试验方法
IWTO-12赛罗(Sirolan)激光扫描纤维直径分析仪测定平均纤维直径及纤维直径分布的方法(Measurement of the mean and distribution of fibre diameter using the sirolan-lasersean fibre diameter analyser)
3术语和定义
下列术语和定义适用于本文件。
3.1
绵羊毛sheep wool
生长在绵羊身上的毛纤维，简称羊毛。
3.2
超细羊毛superfine wool
纤维平均直径在19.0 μm及以下的同质毛。
3.3
细羊毛fine wool
纤维平均直径在19.1 μm～25.0 μm的同质毛。
3.4
半细羊毛 medium fine wool
纤维平均直径在25.1 μm～55.0 μm的同质毛。
3.5
改良羊毛improved wool
生长在改良过程中的杂交绵羊身上的、未达到同质的毛纤维。
3.6
土种羊毛native wool
生长在未经改良、具有原始品种特征的绵羊身上的毛纤维。
3.7
套毛 fleece wool
从活羊身上取得的、毛丛间相互连接、呈紧密网状的羊毛。
3.8
含脂毛 greasy wool
未经过洗涤、溶剂脱脂、碳化或其他方法处理的羊毛。
3.9
品质支数quality number
羊毛按纤维平均直径微米数所规定的相应细度表征指标(参见附录A)。
3.10
粗腔毛 coarse wool hair
粗毛是指直径在52.5 μm及以上的毛纤维。腔毛是指髓腔在500倍显微放大投影像中长度达25 mm及以上的毛纤维。
3.11
干死毛kemp hair
横截面呈扁圆、马蹄形状，毛髓发达，皮质层很薄或无的粗毛。纤维外观干枯，色泽呆白，脆弱易断，染色困难。
3.12
同质毛homogeneous fleece
由同一类型毛纤维组成的羊毛。
3.13
基本同质毛partial homogeneous fleece
在一个套毛上的各个毛丛，大部分为同质毛形态，少部分为异质毛形态。
3.14
异质毛heterogeneous fleece
由不同类型毛纤维组成的羊毛。
3.15
两型毛heterotypical hair
在同一根毛纤维上具有有髓毛和无髓毛两种纤维形态的羊毛。
3.16
边肷毛skirting wool
从套毛周边除下的、与正身毛有明显差异的羊毛。
3.17
头腿尾毛head leg and tail wool
从绵羊身上剪下的头部、腿部、尾部的羊毛。
3.18
异性纤维non-wool fibre
羊毛纤维中混入的其他纤维。
3.19
重剪毛second cuts
剪毛时重复剪下的短羊毛。
3.20
疵点毛faulty wool，defective wool
有缺陷的羊毛。包括：印记毛、黄残毛、粪污毛、草刺毛、硬毡片毛、花毛、疥癣毛及弱节毛。
3.20.1
印记毛stamped wool
在绵羊身上作标记的沾色羊毛，如染色的毛、沥青毛、油漆毛、废机油毛等有色污染毛。
3.20.2
黄残毛canary stained wool
污染变黄且污染部分超过毛丛长度50％以上的羊毛。
3.20.3
粪污毛dung stained wool；dag wool
被粪便严重污染的羊毛。
3.20.4
草刺毛burry wool
羊毛中含植物性草杂密集区的羊毛。
3.20.5
硬毡片毛heavy cotted wool
毛纤维结成毡片，撕扯后非单根纤维状，毛纤维强力严重下降的羊毛。
3.20.6
花毛 coloured wool
毛纤维中夹有的异色羊毛。
3.20.7
疥癣毛dermatitis and acariasis wool
从患有疥癣病的绵羊身上取得的羊毛，带有结痂或皮屑。
3.20.8
弱节毛tender wool
因绵羊生长时营养不良或疾病等因素，导致纤维的一部分直径明显变细、强力降低的羊毛。
3.21
洗净率yield
羊毛洗净后的公定质量占含脂毛质量的百分数。
3.22
净毛率 clean wool content
羊毛经洗涤、去除杂质后的绝干质量，以公定回潮率和公定含油脂率修正后的质量占含脂毛质量的百分数。
3.23
批样lot sample
从大宗散批、交易货批中扦取的羊毛样品。
3.24
子样subsample
从批样中随机扦取的代表批样的样品。
3.25
毛基wool base
不含任何杂质的羊毛绝干质量占子样质量的百分数。
3.26
植物性杂质基vegetable matter base
不含灰分和乙醇萃取物的草刺等植物性杂质的绝干质量占子样质量的百分数。
3.27
试样test specimen
从干燥的洗净子样中随机扦取用于测试的样品。
3.28
总碱不溶物total alkali-insoluble matter
不含灰分和乙醇萃取物的所有碱不溶性物质，用占试样绝干质量的百分数表示。
3.29
乙醇萃取物ethanol extractives
用乙醇作溶剂，经过萃取溶于乙醇的羊毛油脂等物质，用占试样绝干质量的百分数表示。
3.30
灰分ash
试样在750℃±50℃加热灼烧灰化后的残余，用占试样绝干质量的百分数表示。
3.31
纤维直径 fibre diameter
羊毛纤维的粗细程度，用羊毛纤维直径微米(μm)数表示。
3.32
平均纤维直径 mean fibre diameter
羊毛纤维直径的平均值。
3.33
纤维直径变异系数CV of mean fibre diameter
羊毛纤维直径大小变化的程度。
3.34
毛丛长度staple length
一束羊毛纤维在自然卷曲状态下，梢端平均值点至根端间的直线距离。
3.35
平均毛丛长度mean staple length
羊毛纤维在自然卷曲状态下毛丛长度的算术平均值。
3.36
毛丛长度变异系数CV of mean staple length
羊毛纤维在自然卷曲状态下的平均毛丛长度长短变化的程度。
4技术要求
4.1 同质羊毛按型号、规格分类，见表1。
表1 同质羊毛按型号、规格分类
型号 规格 考核指标
平均直径
范围/μm 长度 粗腔毛或干死毛根数百分数/％
≤ 疵点毛质
量分数/％
≤ 植物性杂
质含量/％
≤
毛丛平均
长度/mm
≥ 最短毛丛长度/mm
≥ 最短毛丛个数百分数/％
≤
YM/14.5 A ≤15.0 70 40 2.5 粗腔毛
0.0 0.5 1.0
B 65
C 50
YM/15.5 A 15.1～16.0 70 1.0
B 65 1.5
C 50
YM/16.5 A 16.1～17.0 72 1.0
B 65 1.5
C 50
YM/17.5 A 17.1～18.0 74 1.0
B 68 1.5
C 50
YM/18.5 A 18.1～19.0 76 1.0
B 68 1.5
C 50
YM/19.5 A 19.1～20.0 78 1.0
B 70 1.5
C 50
YM/20.5 A 20.1～21.0 80 1.0
B 72 1.5
C 55
YM/21.5 A 21.1～22.0 82 50 3.0 2.0 1.0
B 74 1.5
C 55
YM/22.5 A 22.1～23.0 84 1.0
B 76 1.5
C 55
YM/23.5 A 23.1～24.0 86 1.0
B 78 1.5
C 60
表1(续)
型号 规格 考核指标
平均直径
范围/μm 长度 粗腔毛或干死毛根数百分数/％
≤ 疵点毛质
量分数/％
≤ 植物性杂
质含量/％
≤
毛丛平均
长度/mm
≥ 最短毛丛
长度/mm
≥ 最短毛丛个数百分数/％
≤
YM/24.5 A 24.1～25.0 88 50 3.0 粗腔毛
0.0 2.0 1.0
B 80 1.5
C 60
YM/26.0 A 25.1～27.0 90 60 4.5 干死毛
0.3 1.0
B 82 1.5
C 70
YM/28.0 A 27.1～29.0 92 1.0
B 84 1.5
C 70
YM/31.0 A 29.1～33.0 110 70 1.0
B 90 1.5
YM/35.0 A 33.1～37.0 110
B 90 1.0
YM/41.5 A 37.1～46.0 110 1.5
B 90
YM/50.5 A 46.1～55.0 110 1.0
B 90 1.5
YM/55.1 A ≥55.1 60 干死毛
1.5
B 40 干死毛
5.0
4.2异质羊毛技术要求见下：
a)改良羊毛技术要求见表2。
表2改良羊毛技术要求
等别 毛丛平均长度/mm 粗腔毛或干死毛根数百分数/％
改良一等 ≥60 ≤1.5
改良二等 ≥40 ≤5.0
b) 土种羊毛按相关标准执行。
4.3主观评定羊毛的型号、规格时，可跨上、下各一档，如有争议则以客观检验结果为准。
4.4毛丛强度介于25 N/ktex～20 N/ktex的为弱节毛，低于20 N/ktex的为严重弱节毛。
4.5净毛率按照实际检测结果标注。
4.6边肷毛质量分数≤1.5％。
4.7花毛应单独包装，并加以说明。
4.8散毛及边肷毛应单独包装，并加以说明。
4.9头腿尾毛、草刺毛及其他有使用价值的疵点毛，分别单独包装，并加以说明。
4.10印记毛、重度污染毛应捡出，单独包装，并加以说明。
5检验方法
5.1取样
5.1.1取样方法
5.1.1.1品质样品的扦取
品质样品采用开包方式扦取，在毛包两端和中间部位分别随机扦取足能代表本批羊毛品质的样品。
5.1.1.2批样的扦取
用于检验的毛包应逐包过磅并钻芯。钻芯方向应平行于毛包打包方向或垂直于套毛堆叠方向，钻孔深度应大于毛包长度的50％，钻孔点距离毛包边缘应大于75 mm。所有钻芯样品应在8 h内称取质量，精确至0.1 g。应去除钻芯样品中的所有包装材料，并将钻芯样品放入密闭的容器内。称取的批样样品质量记作W。
5.1.1.3子样的扦取
批样称取质量后进行混样，混样可采用机械和人工两种方法进行。待样品充分混合均匀后进行分样。将批样平铺在工作台上，铺成的样品厚度在30 mm～60 mm之间，可用两分法、四分法等方法将样品分成16等份，再从每份中随机扦取样品至200 g，共5个子样。也可用多点取样方法，即在铺好的样品上均匀找好20个点进行取样，再将样品翻转使其反面朝上，均匀找好20个点进行取样，直至样品质量为200 g，共5个子样。其余部分作为备样保存。
将扦取的子样和剩余样品称取质量，精确至0.1 g。5个子样质量和剩余样品质量相加得到的质量为Wb。W/Wb为子样质量修正系数。
5.1.2取样数量
5.1.2.1 品质样品
每20包取1包，从中取出不少于1 kg样品。不足20包按20包计。100包以上每增加30包增取1包，不足30包按30包计。每批样品总质量不少于15 kg。将所取的羊毛品质样品称计质量，记作Wp。
5.1.2.2批样
钻芯扦取的批样总质量不少于1 200 g。
5.1.2.3子样
扦取的子样质量为200 g。
5.2检验
5.2.1 纤维直径
在收购环节可采取主观方法判定，如有争议，则以客观检验结果为准。
5.2.2毛丛自然长度
按GB/T 6976进行检验。
5.2.3 毛丛强度
按GB/T 27629进行检验。
5.2.4粗腔毛或干死毛含量
按GB/T 14270进行检验。
5.2.5疵点毛和边肷毛
5.2.5.1检验
将所取的羊毛品质样品平铺在工作台上，从中分拣出疵点毛和边肷毛，分别称取质量并分别记作Wc和Wk。
5.2.5.2疵点毛质量分数的计算
按式(1)计算疵点毛质量分数：
…………………………(1)
式中：
C——疵点毛质量分数，％(精确至0.01)；
Wc——疵点毛质量，单位为千克(kg)(精确至0.01 kg)；
Wp——全批羊毛品质样品质量，单位为千克(kg)(精确至0.1 kg)。
5.2.5.3边肷毛质量分数的计算
按式(2)计算边肷毛质量分数：
…………………………(2)
式中：
K——边肷毛质量分数，％(精确至0.01)；
Wk——边肷毛质量，单位为千克(kg)(精确至0.01 kg)；
Wp——全批羊毛品质样品质量，单位为千克(kg)(精确至0.1 kg)。
5.3净毛率、净毛公量
5.3.1 去除包装物和捆扎物后的羊毛质量的计算
全批货物的毛包均应称计毛包质量，精确至0.01 kg，并扣除包装物和捆扎物质量，按式(3)计算货物去除包装物和捆扎物后的羊毛质量：
Wn=Wg-Wt ……………………………(3)
式中：
Wn——去除包装物和捆扎物后的羊毛质量，单位为千克(kg)(精确至0.1 kg)；
Wg——毛包过磅总质量，单位为千克(kg)(精确至0.1 kg)；
Wt——总包装物和捆扎物质量，单位为千克(kg)(精确至0.1kg)。
5.3.2子样的洗涤和烘干
5.3.2.1仪器和用具
仪器和用量主要有：
a)洗毛设备：洗毛槽，有效容量10 L以上或能满足检测要求，并附有双层铜丝网夹底(每25 mm 100目)和适宜的排水系统；
b)离心脱水机；
c) 非离子型洗涤剂，浓度0.3％～0.4％；
d) 烘箱(附有最小分度值0.01 g的箱内天平和恒温控制装置)；
e)强制式快速烘干器。
5.3.2.2试验步骤
5.3.2.2.1 洗涤子样
第一次：漂洗(水温35℃～45℃)，1 min；
第二次：洗涤(水温52℃±3℃)，3 min：
第三次：漂洗(水温35℃～45℃)，1.5 min；
第四次：洗涤(水温52℃±3℃)，3 min；
第五次：漂洗(水温35℃～45℃)，1.5 min：
第六次：漂洗(水温35℃～45℃)，1.5 min。
洗涤后应收集筛网上的短毛及所有杂质，用洗涤分离法去除泥沙和其他外来杂质，将收集的短毛和植物性杂质合并至子样内。如洗涤时有羊毛纤维和植物性杂质的散失，需对损失进行修正。散失的羊毛纤维和植物性杂质的平均损失不得大于洗涤子样质量的0.3％。
5.3.2.2.2烘干子样
将洗涤后的子样脱水，放入105℃±2℃烘箱内烘至恒重，称重精确至0.01 g。如在非标准大气下进行烘干，则样品的质量应进行温湿度修正，修正系数查见表B.1和表B.2。在箱外称重，应进行浮力和对流修正。测定浮力和对流效应影响的方法参见附录B。
5.3.3 乙醇萃取物、灰分、植物性杂质和总碱不溶物含量
5.3.3.1 乙醇萃取物
5.3.3.1.1仪器设备和试剂
a)索氏萃取器；
b)恒温水浴锅；
c)恒温烘箱；
d)分析天平：最小分度值0.001 g；
e) 乙醇(分析纯，浓度不低于94％)。
5.3.3.1.2试验步骤
从每份洗净烘干的子样中随机称取5 g试样一份，试样质量按规定进行修正。将试样用过滤纸包好后放入浸抽器内，下接已烘至恒重的蒸馏瓶，注入溶剂，将蒸馏瓶置于水浴锅中，使溶剂蒸发上升，冷凝回流，每次测试的回流总次数不少于20次。萃取完毕后，取出试样，回收溶剂，然后将蒸馏瓶放入105℃±2℃烘箱内进行烘干，烘至恒重。
