CN108645799A - The method that import cotton is classified according to Contracted Sample - Google Patents
The method that import cotton is classified according to Contracted Sample Download PDFInfo
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- CN108645799A CN108645799A CN201810436270.5A CN201810436270A CN108645799A CN 108645799 A CN108645799 A CN 108645799A CN 201810436270 A CN201810436270 A CN 201810436270A CN 108645799 A CN108645799 A CN 108645799A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/55—Specular reflectivity
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Abstract
The present invention provides a kind of methods being classified to import cotton according to Contracted Sample, include the following steps：A), cotton samples are divided into qualified samples and need secondary detection sample by initial test；B), instrument test determines the reflectivity Rd and yellow depth+b that every needs secondary detection sample using cotton colorimeter；C), composite rating, for the test result in step b), by color level less than contract requirement to need secondary detection sample to be considered as unqualified, color level is met or needs secondary detection sample whether qualified via technical staff's evaluation higher than contract requirement.The method of the present invention that import cotton is classified according to Contracted Sample, by the way that initial test step is arranged cotton samples are distinguished qualified samples and need secondary detection sample, and by instrument test to needing secondary detection sample to carry out secondary detection, and the result of instrument test is evaluated again by composite rating whether qualified, and then reduce the error artificially judged.
Description
Technical field
The present invention relates to cotton detection technique fields, more particularly to a kind of to be classified to import cotton according to Contracted Sample
Method.
Background technology
China is that maximum cotton country of consumption and importer, annual needs come from a large amount of cottons of import all over the world in the world
Make up notch.Counted according to State General Administration for Quality Supervision, nearly 3 years China's import cottons essentially from the U.S., Australia, India, crow hereby
55 countries and regions such as Benin, Burkina Faso, Cameroon, Zambia of other Bolkestein, Brazil and Africa.According to related rule
Fixed and import cotton sales contract agreement, there are about the conclusions of the business that 30% import cotton contract engagement is approved jointly with reference to trade both sides
Sample is implemented to grade to import cotton, but since China does not have making and the user of clear stipulaties import cotton Contracted Sample
Method brings very big puzzlement to import cotton sense organ hierarchical verification, causes grade inspection result to vary with each individual, difference increases, standard
True property can not ensure, to import cotton trade both sides with puzzlement, or even cause international trade dispute.
For classification is carried out to import cotton according to Contracted Sample, there are unavoidable subjective and objective caused artificial
Error, the present invention, which proposes to combine sense organ classification and instrument test, carries out opening one's minds for Comprehensive Assessment, can substantially reduce
Human error, the accuracy for effectively improving testing result safeguard the fair and just property and authority of import cotton trade.
Invention content
In view of this, the present invention is directed to propose a kind of method being classified to import cotton according to Contracted Sample, to subtract
The error of few cotton detection.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A method of import cotton is classified according to Contracted Sample, is included the following steps：
A), initial test divides into cotton samples with reference to Contracted Sample by only artificial sense classification is carried out to cotton samples
Qualified samples and need secondary detection sample；
B), instrument test, using cotton colorimeter to needing secondary detection sample by only testing, determine in step a)
Every reflectivity Rd for needing secondary detection sample and yellow depth+b, and determine that each needs secondary detection according to cotton Se Zhengtu
The color level of sample, the Rd colour spaces are brightness or the darkness of tested cotton samples, i.e. percent reflectivity；+ b the colour spaces
To be tested the yellowing of cotton samples；
C), color level is needed secondary detection sample by composite rating for the test result in step b) less than contract requirement
Product are considered as unqualified, and color level is met or needs secondary detection sample to be total to via at least two technical staff higher than contract requirement
It is whether qualified with analyzing and evaluating.
Further, step a) is specifically included：
The first step determines the type of Contracted Sample according to for up not for down principle according to international cotton material standard type；
Second step carries out Contracted Sample with corresponding international cotton material standard grade according to the type of Contracted Sample
It compares, and according to the just low rank for high principle not being determined to Contracted Sample；
Third walks, and the international cotton of cotton samples international cotton material standard type corresponding with Contracted Sample is in kind
Standard class is compared, and is qualified samples if cotton samples grade is consistent with Contracted Sample, if cotton samples grade is less than
Contracted Sample, which is then set to, needs secondary detection sample, and according to each cotton samples and Contracted Sample rank difference N, will need secondary detection sample
Product are referred to as to drop N grades of processing.
Further, step b) is specifically included：
The first step will need cotton layer of the secondary detection sample making at thickness uniformly and not less than 5cm, cotton layer be placed on
On smooth desktop, cotton layer lower section is lined with black substrate；
Second step starts cotton colorimeter and randomly selects the test point of 3-6 different location on the cotton sample
It is detected, each test point measures X, Y, Z tristimulus values, and each test point is measured X, Y, Z tristimulus values to be averaged respectively
Value to get to
Third walks, and above-mentioned second step is obtainedFollowing calculation formula is substituted into, L is calculated*、A*、B*：
Xn、Yn、ZnIt is standard sources in YnTristimulus values when equal to 100, wherein Xn、Yn、ZnDefine white object color thorn
Sharp color；L*、A*、B*Three kinds of colour spaces respectively in CIE three-dimensional colors system；
4th step, by L*The colour space substitutes into following formula, calculates cotton color sign parameter index Rd：
Rd=2.3 × L*-100.02 (2)
By L*、A*、B*The colour space substitutes into following formula, calculates cotton color sign parameter index+b：
+ b=-0.12 × L*+0.986×B*+0.02×A*+8.73 (3)
5th step, the Rd values and+b values being calculated according to formula (2) and formula (3), in the ordinate of cotton Se Zhengtu
With location point corresponding with Rd values and+b values is found out on abscissa respectively, two location points are in the crosspoint of cotton Se Zhengtu
To need the color of secondary detection sample to levy level position.
Further, the step a) is carried out in simulation daylight grading room, the simulation daylight grading room light requirement：
Native 100 Luxs of illumination 750, native 200 Kelvins of colour temperature 7500, colour rendering index are no less than 92.
Further, simulation daylight grading room tone requirement:The simulation daylight grading room wall and ceiling must not be deep
In N8.0, floor N7.5.
Further, the temperature of the simulation daylight grading room is 16-26 degrees Celsius, relative humidity 45%-55%.
Further, in being provided with Classification Desk in the simulation daylight grading room, the step a) is carried out in Classification Desk,
Classification Desk's color is light gray or black.
Further, the sense organ time grading is not greater than 25-35min.
Further, when the Contracted Sample is compared with international cotton material standard grade, first to international cotton material object
Standard class is observed, after Contracted Sample is observed
Compared with the existing technology, the present invention has the advantage that：
The method of the present invention import cotton being classified according to Contracted Sample, by be arranged initial test step with incite somebody to action
Cotton samples distinguish qualified samples and need secondary detection sample, and by instrument test to needing secondary detection sample to carry out secondary inspection
It surveys, and whether qualified by composite rating the result of instrument test is evaluated again, and then reduce the mistake artificially judged
Difference improves the accuracy of detection.
Description of the drawings
The attached drawing for constituting the part of the present invention is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the flow chart for the method that the foundation Contracted Sample described in the embodiment of the present invention is classified import cotton；
Fig. 2 is the Contracted Sample pictorial diagram described in the embodiment of the present invention；
Fig. 3 is the material object of a certain grade of the international cotton material standard described in the embodiment of the present invention；
Fig. 4 is the American upland cotton color characteristic figure described in the embodiment of the present invention；
Fig. 5 is the U.S. PIMA cotton color characteristic figures described in the embodiment of the present invention；
Reference sign：
Specific implementation mode
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
The present embodiment is related to a kind of method being classified to import cotton according to Contracted Sample, as shown in Figure 1, this method
Include the following steps：
A), cotton samples are divided into qualification by initial test with reference to Contracted Sample by only sense organ classification is carried out to cotton samples
Sample and need secondary detection sample；
B), instrument test, using cotton colorimeter to needing secondary detection sample by only testing, determine in step a)
Every reflectivity Rd for needing secondary detection sample and yellow depth+b, and determine that each needs secondary detection according to cotton Se Zhengtu
The color level of sample, the Rd colour spaces are brightness or the darkness of tested cotton samples, i.e. percent reflectivity；+ b the colour spaces
To be tested the yellowing of cotton samples；
C), color level is needed secondary detection sample by composite rating for the test result in step b) less than contract requirement
Product are considered as unqualified, and color level is met or needs secondary detection sample to be total to via at least two technical staff higher than contract requirement
It is whether qualified with analyzing and evaluating.
In above-mentioned method, wherein step a) is specifically included：
The first step determines the type of Contracted Sample according to for up not for down principle according to international cotton material standard type,
Wherein international cotton material standard type includes white cotton (White), light spotted cotton (Light Sport, be abbreviated as Lt.Sp), point
Dirty cotton (Sport is abbreviated as Sp), light Yellow Stained (Light Tinged), Yellow Stained (Tinged) etc., are judging Contracted Sample class
Work is considered and rolled to be worth doing according to the color and luster of Contracted Sample, leaf when type and analyzed (Fig. 2 is the Contracted Sample material object arranged), in the determination
In the process, if can determine that, Contracted Sample is corresponding with a certain type in international cotton material standard type, by Contracted Sample
It is set to the type, such as Contracted Sample is consistent with white cotton type, is set to white cotton, if Contracted Sample is consistent with light spotted cotton type
Then it is set to light spotted cotton, and so on；If Contracted Sample between two adjacent types in international cotton material standard type,
Then according to for up not for down principle, Contracted Sample is set to that type with a higher standard, such as Contracted Sample is between Bai Mianhe
Just it is set to white cotton between light spotted cotton, Contracted Sample is just set to light spotted cotton between light spotted cotton and spotted cotton.
Second step carries out Contracted Sample with corresponding international cotton material standard grade according to the type of Contracted Sample
It compares, even determines that Contracted Sample type is white cotton according to the first step, then compared according to the international cotton material standard of white cotton
It is right, (it is the material object of a certain grade in some type of international cotton material standard in such as Fig. 3 comprising 6 pieces from different sources
Material object selects being compared for the identical place of production when comparing).If determining that Contracted Sample type is yellowish dye according to the first step
Cotton is then compared according to the international cotton material standard of light Yellow Stained, and does not determine Contracted Sample with regard to high principle according to just low
Rank, be illustrated by taking white cotton as an example herein, wherein the worlds Bai Mian cotton material standard grade mainly include GM, SM,
M, 7 grades such as SLM, LM, SGO, GO.When comparing, if can determine that in Contracted Sample and international cotton material standard grade
A certain grade is corresponding, then Contracted Sample is set to the grade, such as Contracted Sample is consistent with GM, is set to GM, if Contracted Sample
It is consistent with SM, it is set to SM, and so on；If Contracted Sample in international cotton material standard type two adjacent ranks it
Between, then according to just low not just high principle, Contracted Sample is set to that lower grade of specification, such as Contracted Sample between GM with
Just it is set to SM between SM, Contracted Sample is just set to M between SM and M.It is determining Contracted Sample type in the present embodiment and is waiting
It is using for up not for down principle and just low not with regard to the high method being combined when grade, it on the one hand can guarantee the accuracy of detection, reduce
On the other hand error can also reduce the responsibility that detection side is undertaken as possible.
In second step, if in comparison process Contracted Sample be apparently higher than or less than with type is had determined that in the first step
The highest level or the lowest class of corresponding grade then repeat the first step to judge the type of Contracted Sample again, such as the
Judge that Contracted Sample type is white cotton in one step, and Contracted Sample is less than grade GO standards in second step, then the repeatedly first step
It is such as spotted cotton, and again by Contracted Sample and spotted cotton state to determine Contracted Sample type as light spotted cotton or spotted cotton
Border cotton material standard is compared, and so on.Certainly, regardless of whether Contracted Sample can be determined disposably in the present embodiment
The first step and second step can be repeated several times in type and rank, to ensure the accuracy of detection.
Third walks, and the international cotton of cotton samples international cotton material standard type corresponding with Contracted Sample is in kind
Standard class is compared, and is qualified samples if cotton samples grade is consistent with Contracted Sample, if cotton samples grade is less than
Contracted Sample, which is then set to, needs secondary detection sample, and according to each cotton samples and Contracted Sample rank difference N, will need secondary detection sample
Product are referred to as to drop N grades of processing.Specifically, if determining that Contracted Sample type is white according to the first step and second step in step a)
Cotton, grade are M grades, white cotton M are denoted as, and seal Contracted Sample up for safekeeping after learning by heart, then by cotton samples according to the international cotton of white cotton
Flower material standard grade is compared, if cotton samples are consistent with M grades, is set to qualified samples, if cotton samples grade is less than M
Grade, then being set to needs secondary detection sample, and even cotton samples are consistent with SLM, consistent with LM by 1 grade of processing (i.e. N=1) of drop
By 2 grades of processing (i.e. N=2) of drop, and so on, by carrying out different degradation processing to cotton samples, so as to be convenient for rope
Pay for the progress of work.
In addition, in step a), to reduce the error of artificial sense, sense organ time grading is not greater than 25-
35min, optimal is 30min, and restarts sense organ classification after ensureing eyes rest 3-5min, meanwhile, in the Contracted Sample
When being compared with international cotton material standard grade, first international cotton material standard grade is observed, after to Contracted Sample into
Row observation judges to impact to can avoid Contracted Sample to human subjective.Certainly, cotton samples and international cotton material object mark
The worlds Ye Kexiandui cotton material standard grade is observed when quasi- grade is compared, after side that cotton samples are observed
Method.
Chinese utility model patent, Authorization Notice No. CN203479397U, title can be used in step b) in the present embodiment
For a kind of hand-held cotton colorimeter with wireless transmission function, (hereinafter referred cotton colorimeter) and Chinese invention patent,
Application publication number is a kind of method of cotton colour examining of CN103398956A, is specifically included：
Above-mentioned is needed cotton layer of the secondary detection sample making at thickness uniformly and not less than 5cm, by the cotton by the first step
Layer is placed on smooth desktop, and cotton layer lower section is lined with black substrate；
Second step starts cotton colorimeter and randomly selects the test point of 3-6 different location on the cotton sample
It is detected, each test point measures X, Y, Z tristimulus values, and each test point is measured X, Y, Z tristimulus values to be averaged respectively
Value to get to
Third walks, and above-mentioned second step is obtainedFollowing calculation formula is substituted into, L is calculated*、A*、B*：
Xn、Yn、ZnIt is standard sources in YnTristimulus values when equal to 100, wherein Xn、Yn、ZnDefine white object color thorn
Sharp color；L*、A*、B*Three kinds of colour spaces respectively in CIE three-dimensional colors system；
4th step, by L*The colour space substitutes into following formula, calculates cotton color sign parameter index Rd：
Rd=2.3 × L*-100.02 (2)
By L*、A*、B*The colour space substitutes into following formula, calculates cotton color sign parameter index+b：
+ b=-0.12 × L*+0.986×B*+0.02×A*+8.73 (3)
5th step, the Rd values and+b values being calculated according to formula (2) and formula (3), in the ordinate of cotton Se Zhengtu
With location point corresponding with Rd values and+b values is found out on abscissa respectively, two location points are in the crosspoint of cotton Se Zhengtu
To need the color of secondary detection sample to levy level position.
It is illustrated by two kinds of situations of upland cotton and long-staple cotton of import cotton contract engagement in the present embodiment：
When import cotton contract engagement is upland cotton, the reflectivity (Rd) and yellow depth (+b) that are measured according to tester
Numerical value, as shown in figure 4, find the corresponding location point of reflectivity (Rd) on ordinate, find on the horizontal scale yellow depth (+
B) corresponding location point, then respectively along straight line is both horizontally and vertically drawn, crosspoint is that the tested cotton samples are corresponding
Color levies level position.For example, it is 10 that need the reflectivity (Rd) of secondary detection sample, which be 80, yellow depth (+b), two lines intersect at 11-
3 regions, then corresponding color sign grade is exactly 11-3, that is, it is white the 3rd piece of cotton class GM grades to need secondary detection sample, if you need to secondary detection sample
The reflectivity (Rd) of product is that 70, yellow depth (+b) is 14, and two lines intersect at the regions 24-1, and corresponding color sign grade is exactly 24-1,
It is SM grades of Yellow Stained (Tinged) that showing, which needs secondary detection sample,.
When import cotton contract engagement is long-staple cotton, as shown in figure 5, the reflectivity (Rd) measured according to cotton fiber testing
With yellow depth (+b) numerical value, the corresponding location point of reflectivity (Rd) is found on ordinate, finds yellow depth on the horizontal scale
(+b) corresponding location point is spent, then respectively along straight line is both horizontally and vertically drawn, crosspoint is to need secondary detection sample institute
Corresponding color levies level position.For example, it is 9 that be needed the reflectivity (Rd) of secondary detection sample, which be 75, yellow depth (+b), two lines are handed over
It pitches in 1 region, then corresponding color sign grade is exactly 1 grade, as 1 grade of PIMA cottons；It is if you need to the reflectivity (Rd) of secondary detection sample
70, yellow depth (+b) is 11, then corresponding color sign grade is exactly 2 grades；It is 65 if you need to the reflectivity (Rd) of secondary detection sample, yellow
Color depth (+b) is 12, then corresponding color sign grade is exactly 3 grades, and so on.Different from the type of upland cotton and partition of the level side
Formula, long-staple cotton only exist grade classification, as 1-6 grades, in above-mentioned steps a) second steps, i.e., in the rank for determining Contracted Sample
When, also unanimously then it is set to for 1 grade with PIMA cottons using the just low rank for high principle not being determined to Contracted Sample, i.e. such as Contracted Sample
1 grade of PIMA cottons are set to 2 grades of PIMA cottons if 2 grades of Contracted Sample and PIMA cottons are consistent, and so on；If Contracted Sample is between two
Between a adjacent rank, then according to just it is low not with regard to high principle, Contracted Sample is set to that lower grade of specification, such as strike a bargain
Sample is just set to 2 grades of PIMA cottons between 2 grades of 1 grade of PIMA cottons and PIMA cottons.In above-mentioned steps a) thirds step, long-staple cotton and land
The judgment mode of ground cotton is identical, and details are not described herein.
After determining the color level for needing secondary detection sample, secondary detection sample is needed to regard less than contract requirement color level
To be unqualified, color level is met or needs secondary detection sample to divide jointly via at least two technical staff higher than contract requirement
Analyse and evaluate it is whether qualified.
In addition, in order to improve the accuracy of sense organ classification, step a) is carried out in simulation daylight grading room in the present embodiment,
The simulation daylight grading room light requirement：Native 100 Luxs of illumination 750, native 200 Kelvins of colour temperature 7500, colour rendering index are not
Less than 92, and simulate daylight grading room tone requirement:The simulation daylight grading room wall and ceiling must not be deeper than N8.0, ground
Plate takes N7.5, and can be provided with Classification Desk in simulation daylight grading room, so that step a) is carried out in Classification Desk, described point
Grade platform color is light gray or black, and optimal is light grey.Meanwhile also can by simulate daylight grading room temperature setting be 16-
26 degrees Celsius, relative humidity 45%-55%, on the one hand can reduce cotton samples color and luster variation, another aspect maintenance condition compared with
For economy.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (9)
1. a kind of method being classified to import cotton according to Contracted Sample, it is characterised in that include the following steps：
A), cotton samples are divided into qualification by initial test with reference to Contracted Sample by only artificial sense classification is carried out to cotton samples
Sample and need secondary detection sample；
B), instrument test, using cotton colorimeter to needing secondary detection sample to carry out, by only testing, determining every in step a)
The reflectivity Rd and yellow depth+b of secondary detection sample are needed, and determines that each needs secondary detection sample according to cotton Se Zhengtu
Color level, the Rd colour spaces are brightness or the darkness of tested cotton samples, i.e. percent reflectivity；+ b the colour spaces are quilt
Survey the yellowing of cotton samples；
C), color level is needed secondary detection sample to regard by composite rating for the test result in step b) less than contract requirement
To be unqualified, color level is met or needs secondary detection sample to divide jointly via at least two technical staff higher than contract requirement
Analyse and evaluate it is whether qualified.
2. the method according to claim 1 being classified to import cotton according to Contracted Sample, it is characterised in that：Step
A) it specifically includes：
The first step determines the type of Contracted Sample according to for up not for down principle according to international cotton material standard type；
Contracted Sample is compared with corresponding international cotton material standard grade according to the type of Contracted Sample for second step,
And according to the just low rank for high principle not being determined to Contracted Sample；
Third walks, by the international cotton material standard of cotton samples international cotton material standard type corresponding with Contracted Sample
Grade is compared, and is qualified samples if cotton samples grade is consistent with Contracted Sample, if cotton samples grade is less than conclusion of the business
Sample, which is then set to, needs secondary detection sample, and according to each cotton samples and Contracted Sample rank difference N, secondary detection sample will be needed to claim
For drop N grade handle.
3. the method according to claim 2 being classified to import cotton according to Contracted Sample, it is characterised in that：Step
B) it specifically includes：
The first step will need cotton layer of the secondary detection sample making at thickness uniformly and not less than 5cm, cotton layer is placed on smooth
Desktop on, cotton layer lower section is lined with black substrate；
Second step, starts cotton colorimeter and the test point that 3-6 different location is randomly selected on the cotton sample carries out
Detection, each test point measure X, Y, Z tristimulus values, and each test point is measured X, Y, Z tristimulus values to be averaged respectively, i.e.,
It obtains
Third walks, and above-mentioned second step is obtainedFollowing calculation formula is substituted into, L is calculated*、A*、B*：
Xn、Yn、ZnIt is standard sources in YnTristimulus values when equal to 100, wherein Xn、Yn、ZnDefine the face of white object colour stimulus
Color；L*、A*、B*Three kinds of colour spaces respectively in CIE three-dimensional colors system；
4th step, by L*The colour space substitutes into following formula, calculates cotton color sign parameter index Rd：
Rd=2.3 × L*-100.02 (2)
By L*、A*、B*The colour space substitutes into following formula, calculates cotton color sign parameter index+b：
+ b=-0.12 × L*+0.986×B*+0.02×A*+8.73 (3)
5th step, the Rd values and+b values being calculated according to formula (2) and formula (3), in the ordinate and cross of cotton Se Zhengtu
Location point corresponding with Rd values and+b values is found out on coordinate respectively, two location points are to need in the crosspoint of cotton Se Zhengtu
The color of secondary detection sample levies level position.
4. the method according to claim 2 being classified to import cotton according to Contracted Sample, it is characterised in that：It is described
Step a) is carried out in simulation daylight grading room, the simulation daylight grading room light requirement：Native 100 Luxs of illumination 750, color
Native 200 Kelvins of temperature 7500, colour rendering index are no less than 92.
5. the method according to claim 4 being classified to import cotton according to Contracted Sample, it is characterised in that：Simulation
The requirement of daylight grading room tone:The simulation daylight grading room wall and ceiling must not be deeper than N8.0, floor N7.5.
6. the method according to claim 4 being classified to import cotton according to Contracted Sample, it is characterised in that：It is described
The temperature for simulating daylight grading room is 16-26 degrees Celsius, relative humidity 45%-55%.
7. the method according to claim 2 being classified to import cotton according to Contracted Sample, it is characterised in that：In institute
It states and is provided with Classification Desk in simulation daylight grading room, the sense organ classification carries out in Classification Desk, and Classification Desk's color is shallow
Ash or black.
8. the method according to claim 2 being classified to import cotton according to Contracted Sample, it is characterised in that：It is described
Sense organ time grading is not greater than 25-35min.
9. the method according to claim 2 being classified to import cotton according to Contracted Sample, it is characterised in that：Institute
When stating Contracted Sample and being compared with international cotton material standard grade, first international cotton material standard grade is observed, it is rear right
Contracted Sample is observed.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108671A (en) * | 2019-05-09 | 2019-08-09 | 河北出入境检验检疫局检验检疫技术中心 | Extend the calculation method of light Yellow Stained class world classification material standard service life |
| CN110132900A (en) * | 2019-05-09 | 2019-08-16 | 河北出入境检验检疫局检验检疫技术中心 | Extend the calculation method of the world Bai Mianlei classification material standard service life |
| CN110208217A (en) * | 2019-05-09 | 2019-09-06 | 河北出入境检验检疫局检验检疫技术中心 | Extend the calculation method of spotted cotton class world classification material standard service life |
| CN113758768A (en) * | 2020-06-04 | 2021-12-07 | 石家庄海关技术中心 | Method for making imported Indian cotton grade inspection grade distance standard sample |
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