GB 19176-2003 Sugar beet seeds

This standard specifies the terms and definitions, technical conditions, inspection methods, inspection rules, and packaging, marking, transportation, and storage requirements for sugar beet seeds. This standard applies to the production and sale of sugar beet seeds. GB 19176-2003 Sugar beet seeds GB19176-2003 standard download decompression password: www.bzxz.net

Table 2 (Chapter 4 Technical Requirements) of this standard is recommended, and the rest are mandatory. GB19176—2003
This standard adopts part of the 1996 edition of the International Seed Inspection Procedure and is implemented in conjunction with GB/T3543-—1995 "Crop Seed Inspection Procedure".
This standard shall abolish QB1008—1998 "Sugar Beet Seeds" from the date of implementation. Appendices A, B, C, D, E, F and G of this standard are all normative appendices. This standard is proposed by the Ministry of Agriculture of the People's Republic of China. This standard is under the jurisdiction of the Crop Management Department of the Ministry of Agriculture. The responsible drafting units of this standard are: Sugar Beet Quality Supervision and Inspection Test Center of the Ministry of Agriculture, Sugar Beet Research Institute of the Chinese Academy of Agricultural Sciences; participating drafting units: National Agricultural Technology Extension Service Center, Heilongjiang Province Sugar Beet Seed Management Station, Jiangsu Provincial Farm Reclamation Dahua Seed Group Co., Ltd., Inner Mongolia Baotou Huazi Industrial Co., Ltd. The main drafters of this standard are Wu Yumei, Chen Lianjiang, Deng Guanglian, Teng Baiqian, Wu Qingfeng, Wang Xinmin and Qin Shucai. 1 Scope
Sugar beet seeds
GB19176—2003
This standard specifies the terms and definitions, technical requirements, inspection methods, inspection rules and packaging, marking, transportation and storage requirements of sugar beet seeds.
This standard applies to sugar beet seeds produced and sold. 2 Normative references
The clauses in the following documents become the clauses of this standard through reference in this standard. For any dated referenced document, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, the parties to the agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, the latest version shall apply to this standard. GB/T731 Technical conditions for jute bags
GB/T6543 Corrugated paper boxes
GB/T8946 Plastic woven bags
Seed Law of the People's Republic of China (issued by the Standing Committee of the Ninth National People's Congress) 3 Terms and definitions
The following terms and definitions apply to this standard. 3.1
breeder seed
seeds of the ancestral or parental lines of a variety with stable genetic traits bred by breeders, used to propagate the original seed. 3.2
basic seed
seeds of the first generation propagated from breeder seeds, used to propagate seeds for field use. 3.3
field seeds
commercial seed
seeds that meet the quality requirements for field use propagated from original seeds. 3.4
Diploid
In beet somatic cells, there are two sets of chromosomes (2x=18 chromosomes). 3.5
Triploid
In beet somatic cells, there are three sets of chromosomes (3x-27 chromosomes). 3.6
Tetraploid
In beet somatic cells, there are four sets of chromosomes (4x-36 chromosomes). 3.7
Polyploid;multiploid
Polyploid
GB 19176—2003
General term for common polyploid and male sterile polyploid. 3.7.1
Exoploid
The first generation of hybrids prepared by natural hybridization of tetraploid strain as female parent and diploid strain as male parent in a certain ratio (3:1). 3.7.2
Polyploid based on CMSThe first generation of hybrids prepared by natural hybridization of male sterile diploid (or tetraploid) strain as female parent and tetraploid (or diploid) strain with normal pollen as male parent in a certain ratio (mother: father = 3:1 or 4:1) (mixed or separate harvest). 3.8
Genetic monogerm seed is also called single seed seed, single fruit seed, single bud seed, which is a seed obtained by genetics with only one embryo in the bulb. 3.9
Multigerm seed
Also called multi-grain seed or multi-germ seed, a seed with more than two (including two) germs in the bulb. 3.10
Technical monogerm seed A seed that has been mechanically processed so that each bulb contains only one germ. 3.11
Processed seed
Seed that has been processed by polishing to significantly change other characteristics (such as particle size, specific gravity, etc.) except for its genetic nature. 3.12
Coated seed
Seed that has been coated with other (non-seed) materials by some method. Pelleted seed and coated seed are both coated seeds. 3.13
Pelleted seed
Pelleted seed is a pelleted seed made of pelleting material with no obvious difference in size and shape. In addition to the pelleting material, pelleted seeds may contain pesticides, fungicides, dyes or other additives. 3.14
Encrusted seed
Seeds treated with coating materials are similar in shape to the original seeds, and their size and mass can vary in a large or small range. The coating material may contain pesticides, fungicides, dyes or other additives. 3.15
treated seed
Seeds that are only treated with pesticides, fungicides, dyes or other additives without causing significant changes in their size and shape. Generally, the additives should be less than 5% of the seed mass, so this seed can still be determined according to the method specified for natural seeds. 3.16
Beet male sterile is also called beet male sterile, because the pollen mother cells of beet are degenerated and do not have the ability to pollinate. 3.17
seed lot
seeds of the same source, same variety, harvested in the same year, at the same time and of basically the same quality, within the specified quantity. 3.18
primary sample
a small portion of seeds taken from a sampling point in a seed lot. 3.19
composite sample
a mixture of all primary samples taken from a seed lot. 3.20
submitted sample
a sample sent to a seed inspection agency for inspection according to the specified quantity (see A.2.5 in Appendix A). 3.21
Test sample (referred to as "working sample") is a part of the sample separated from the sample for testing in the laboratory for the purpose of determining a certain test item.3.22
Sealed
GB 19176--2003
Seeds are sealed in a container. If the container is not sealed, the seeds cannot be taken out. If the container itself does not have the sealing performance, each container shall be given a formal seal or a mark that is not easy to wipe off or a seal that cannot be torn off and re-applied.3.23
Purity percentage purity
Also known as the cleaning rate, it is the percentage of pure seeds after sifting with a sieve of specified aperture.3.24
Pure seed pure seed
Complete beet bulbs and broken bulbs left on the sieve after sifting different types of beet seeds with a specified method and a sieve of specified aperture.3.25
Other plant seeds
other seed
Any plant seeds other than clean seeds. 3.26
Inert matter
All other non-seed matter other than clean seeds and other plant seeds. 3.27
percentage germination
Germination rate
Under the specified conditions and time (10 days), the number of normal seedling bulbs grown as a percentage of the number of bulbs for inspection. 3.28
Percentage germination of monogermUnder the specified conditions and time (10 days), the number of normal single-plant seedling bulbs grown as a percentage of the number of normal seedling bulbs for inspection. 3.29
Percentage monogerm seedIn the sugar beet test samples, the number of monogerm seeds measured as a percentage of the number of seeds for inspection. 3.30
percentage triploid
In the polyploid beet test sample, the percentage of individuals whose somatic cells contain three chromosome sets (3x=27). 3.31
percentage dropped shellIn the beet test sample, the percentage of seeds with fallen shells (caps) in the number of seeds tested. 3.32
moisture content
GB19176--2003
The mass lost by drying the seed sample according to the prescribed procedures, expressed as the percentage of the lost mass to the original mass of the sample tested. 3.33
the weight of 1 000 seedsThe weight of 1 000 beet seeds that meet the moisture content specified in the national beet seed quality standard, in grams. 4 Technical requirements
The technical indicators for the purchase of sugar beet embryonic seeds are shown in Table 1, the technical indicators for the use of sugar beet embryonic seeds are shown in Table 2, the technical indicators for the purchase of sugar beet single embryonic seeds are shown in Table 3, and the technical indicators for the use of sugar beet single embryonic seeds are shown in Table 4. Table 1
Variety name
Diploid
Polyploid
First seed
Second seed
Original seed (tetraploid)
First seed
Second seed
Note: A long hole sieve is used for the particle size inspection. Germination rate
Variety name
Diploid
PolyploidwwW.bzxz.Net
Coated seeds
First-grade field seeds
Second-grade field seeds
First-grade field seeds
Second-grade field seeds
Sugar beet embryo-replicating seed purchase technical indicators Purity
Triploid rate
45 (ordinary polyploid) or
70 (male sterile polyploid)
Sugar beet embryo-replicating seed processing technical indicators Germination rate
Note 1: The technical indicators for the use of unprocessed first-grade and second-grade field seeds are the same as Table 1. Note 2: The embryo-replicating original seeds must use processed seeds. Note 3: The particle size project is tested using a long hole sieve. Table 3
First-class seeds
Second-class seeds
Germination rate
Single seed rate
Note 1: The inspection items of single germination rate and triploid rate are the same as those in Table 4. Note 2: A round hole sieve is used for the inspection of particle size items. 4
Triploid rate
45 (ordinary polyploid) or
70 (male sterile polyploid);
Except for diploid coated seeds
Technical indicators for the purchase of single embryo seeds for sugar sweet potato Purity
Particle size/mm
Particle size/mm
Hulling rate
Yellow,
Yellow-green, yellow-brown;
No odor
Particle size/mm
2.0~~4. 5
Yellow, yellow-green,
Yellow-brown; no odor
Coated seeds
First-level field seeds
Second-level field seeds
Mechanical single-embryo seeds
Single-grain rate
Technical indicators for the use of sugar beet single-embryo seeds Germination rate
Note 1: The triploid rate item is not tested for diploid single-embryo seeds. Single germination rate
Note 2: The triploid rate indicator in this table refers to male sterile polyploid varieties. Note 3; The particle size item is tested using a round hole sieve. 5 Inspection methods
5.1 Sampling and sub-sampling
Perform according to Appendix A.
5.2 Purity analysis
Perform according to Appendix B.
5.3 Color and smell test
Triploid rate
GB 19176-2003
Particle size/mm
Dehulling rate
Under bright natural light, observe the color of beet seeds. Seeds with yellow, yellow-green, and yellow-brown colors that account for more than 80% of the test samples are determined to be normal color seeds. Seeds with other colors and odors must be tested for germination rate to determine whether they meet the standard.
5.4 Dehulling rate determination
From the clean seeds after purity analysis, use a seed counter or manual random number to select 400 seeds, and each 100 seeds is a repetition. Observe the percentage of seeds with fallen fruit caps in each repetition. The average of the four repetition percentages is the dehulling rate, and the result should be rounded to the nearest integer. If the result is zero, fill in "-0-". 5.5 Germination rate test
Perform according to Appendix C.
5.6 Triploid rate test
Perform according to Appendix D.
5.7 Single seed rate test
From the clean seeds after purity analysis, use a seed counter or manually randomly select 400 seeds, and every 100 seeds are a repeat. Observe the percentage of single embryo seeds in each repeat. The average of the percentages of four repeats is the single seed rate. The result is rounded to the nearest integer. 5.8 Moisture determination
Perform according to Appendix E.
5.9 Dry grain weight determination
Perform according to Appendix F.
5.10 Coated seed inspection
Perform according to Appendix G.
6 Inspection rules
6.1 The name of the inspected variety shall be based on the certificate of conformity issued by the provincial (autonomous region, municipality directly under the central government) and national variety approval departments. 5
GB 19176—2003
6.2 The basis for the classification of the quality level of sugar beet seeds for purchase and use is that the germination rate index is used as the classification basis for multiple embryo seeds, and the single embryo seeds are classified based on the single seed rate and germination rate index. Other indicators such as clarity, moisture, triploid rate, single bud rate, grain size, shelling rate, color and other items must meet the specified requirements.
6.3 If any of the clarity, germination rate, moisture, triploid rate of polyploid varieties, single bud rate and single seed rate of single embryo seeds does not meet the secondary index, it is unqualified seed.
6.4 If there is any objection to the seed quality inspection results, you can apply for reconsideration or arbitration to the relevant department within 15 days from the date of receipt of the inspection results.
7 Packaging, marking, transportation and storage
7.1 Packaging
7.1.1 Purchased sugar beet multiple embryo seeds and single embryo seeds shall be packed in gunny bags or woven bags. Gunny bag specifications shall meet the requirements of No. 2 bags in GB/T731 technical conditions. Plastic woven bags shall meet the model, specifications and technical requirements of type A bags in GB/T8946. The net weight of each bag is 25kg~30kg. 7.1.2 The sold multiple embryo seeds and single embryo processed seeds shall be packed in plastic woven bags or gunny bags. The requirements for plastic woven bags and gunny bags are the same as those in 7.1.1. The net weight of each bag is 25kg30kg.
7.1.3 The bulk sales of single and multiple embryo coated seeds shall be packed in plastic woven bags. The requirements for plastic woven bags are the same as those in 7.1.1; the retail sales of single and multiple embryo coated seeds shall be packed in corrugated boxes. The specifications of the corrugated boxes shall meet the requirements of Class 2 corrugated boxes in GB/T6543 technical requirements. Each corrugated box contains (6-10) units of single embryo coated seeds (100,000 seeds per unit), and 10 kg of double embryo coated seeds. Each unit or 1 kg must be packaged separately. The packaging materials can be plastic bags, cardboard boxes, paper bags, etc. 7.2 Labels
Sold bagged and boxed (including each individual package in the box) beet seeds must be labeled. The content marked on the label must comply with the requirements of Chapter 5, Article 35 of the Seed Law of the People's Republic of China. 7.3 Transportation
It is prohibited to store and transport them together with harmful, toxic or other polluting items, and prevent moisture. Vehicles should be covered with bitter cloth when transporting, and ships should have a cushioning layer when transporting.
7.4 Storage
The storage place of beet seeds must be rainproof, moisture-proof, fireproof, rodent-proof, ventilated, etc. The warehouse should have an attached drying yard. It is prohibited to store them together with flammable, explosive goods, fertilizers, pesticides and other materials. The stacking of sugar beet seeds should be convenient for seed sampling. Seeds must undergo various inspections before leaving the warehouse, and unqualified seeds are not allowed to leave the warehouse.
A.1 Instruments and utensils
Appendix A
(Normative Appendix)
Sampling and sampling procedures
Sampler; sampler; balance: weighing 1-5kg, sensitivity 1g, 0.1g; sample bags, seals, etc. A.2 Sampling procedures
A.2.1 Preparation before sampling
GB 19176--2003
The sampler (inspector) should understand the seed quality of the batch of seeds during the stacking, mixing and storage process from the sugar beet seed management, production and use units,
A.2.2 Requirements for seed batches to be sampled
A batch of sugar beet seeds with multiple embryos (including diploid varieties, polyploid varieties and processed varieties) is 20,000 kg as a seed batch; single embryo seeds are 10,000 units (100,000 seeds per unit), which is equivalent to 10,000 kg as a seed batch. The allowable error for each seed batch is 5%. If the mass exceeds the specified mass, it must be divided into several batches and given batch numbers respectively. If it is less than one seed batch, the actual mass shall be sampled.
The arrangement of seed batches should make it easy to sample each package or each part of the batch of seeds; the seed batches to be sampled should be properly mixed, blended and mechanically processed before sampling to make them uniform. A.2.3 Taking the initial sample
A.2.3.1 Bag sampling method
The number of sampling bags is determined according to the number of seed batch bags. The number of sampling bags in Table A.1 should be the minimum requirement. The basic unit for sampling sugar beet seeds in small containers (paper boxes, small packages, etc.) is 100kg. If the small container is 20kg, five small containers are one "container" and sampling is carried out according to the provisions of Table A.1. When sampling bagged seed piles, randomly select the sampling bags from the top, middle and bottom. When sampling, use the tip of the sampler to first open the wire hole of the packaging, then point the groove downward, and insert the tip of the bag corner into the bag at an angle of 30° upward from the horizontal until it reaches the farthest point of the bag, then rotate the groove upward, pull it out at a relatively uniform speed, and put the sample into the container. Table A, Number of sampling bags (containers) for 1 bag Number of bags in seed batch
(Number of containers)
50~400
401~560
561 and above
A.2.3.2 Bulk sampling method
Minimum number of bags for sampling
(Number of containers)| |tt||Take samples from each bag, at least 5 initial samples, no less than 5 bags
Take at least 1 bag from every 3 bags
No less than 10 bags
Take at least 1 bag from every 5 bags
No less than 80 bags
Take at least 1 bag from every 7 bags
When sampling in bulk, the initial samples should be randomly taken from various parts and depths. The number of samples taken from each part should be roughly equal. The sampling operation method is the same as the bag sampling method (A.2.3.1). Determine the number of sampling points according to the quantity of bulk seed batch. See Table A.2 for the number of sampling points. 7
GB 19176—-2003
Seed batch size/kg
Below 50
51～1500
1 501～3 000
3 001 ~5 000
5001~20000
20 001~～28 000
A.2.4 Preparation of mixed samples
Table A.2 Number of sampling points for bulk
If the initial samples are basically uniform, they can be combined and mixed into a mixed sample. A.2.5 Acquisition and quality of samples for inspection
Number of sampling points
Not less than 3 points
Not less than 5 points
At least 1 point for every 300kg
Not less than 10 points
At least 1 point for every 500kg
Not less than 40 points
Use a sample divider or quartering method to separate the mixed sample into samples close to the mass required for each test. Among them, at least 50g is required for moisture determination; at least 500g for multiple embryos, 250g for single embryos, and about 150g for coated varieties are required for all other items. A.2.6 Handling of samples for inspection
Samples must be packaged well to prevent damage during transportation. Samples for moisture determination should be placed in moisture-proof containers, and those for other items can be placed in cloth bags or paper bags.
The sample must be sent to the seed inspection agency by the sampler (inspector) as soon as possible without delay. It must be noted that the sample must not be handed over to anyone who is not authorized by the inspection agency. The initial sample, mixed sample or sample sent for inspection must not leave the control of the sampler or the personnel assigned by the inspection agency. Each sample sent for inspection must have a password and a sampling instruction manual. A.3 Laboratory sampling procedure
A.3.1 Separation of test samples
After the inspection agency receives the sample sent for inspection and registers it as qualified according to the requirements, it will first mix the sample sent for inspection thoroughly, and then divide the sample into two parts using the mechanical sample divider method (see A.3.2). One part is put into a sample bag and sent to the sample storage room as a re-inspection sample; the other part is used as a test sample for various (except moisture) measurements, and its quality must be consistent with the specified quality. Duplicate samples must be separated independently. After the first sample is separated, the second sample must be separated from the other part of the sample sent for inspection. A.3.2 Mechanical sample divider method
When using a bell-shaped sample divider, it should be brushed clean first. When placing the sample into the funnel, it should be laid flat. Quickly open the valve with your hand to make the sample fall quickly. Then pour the samples from the two containers into the funnel at the same time, continue to mix 2 to 3 times, and then take one of the containers to continue to divide according to the above method until the specified mass is reached. When using a horizontal sample divider, first spread the seeds evenly in the pouring tray, and then pour them into the funnel at a constant speed along the length of the funnel.
A.4 Sample storage
Samples for moisture determination should be tested quickly; if other items cannot be tested in time, the samples must be stored in a cool and ventilated room to minimize the change in quality. In order to facilitate re-inspection, the retained samples should be stored under appropriate conditions (low temperature drying) for one year. 8
B.1 Apparatus and equipment
Appendix B
(Normative Appendix)
Clarity analysis
Sample divider; sieves of different apertures (including oscillator); balance: sensitivity 0.1g, 0.01g and 0.001g. B.2 Determination procedure
Use one sample for analysis.
B.2.1 Inspection of heavy impurities
GB 19176—2003
From the sample weighing at least 250.0g (125.0g for single embryo seeds) (M), pick out impurities that are obviously different in size or quality from beet seeds and seriously affect the results, such as soil blocks, small stones or other large seeds, etc., and weigh them (m), and then separate the heavy impurities (m) into other plant seeds (mi) and impurities (m2). B.2.2 Separation of test samples
The test sample (one portion) for purity analysis should be separated from the sample for inspection from which the heavy impurities have been selected (according to the method in Chapter A.3) of about 50.000g and weighed.
B.2.3 Separation of test samples
Place the test sample in the test sieve of the specified aperture for sieving. The seed sifter is sifted for 2 minutes (1 minute for coated seeds); the manual sifting method is to reciprocate 20 times (10 times for coated seeds), turn to 90° and reciprocate 20 times (10 times for coated seeds), and then tap it to end. Then, impurities such as small stones, soil blocks, mouse and bird droppings, beet plant stems and leaves, detached florets, debris, etc., which are not beet seeds and other plant seeds, are separated from the clean seeds (beet bulbs and broken bulbs) on the sieve; at the same time, other plant seeds that have been sieved are also separated from the impurities. Finally, the impurities and other plant seeds on and under the sieve are combined together, so that the sample is separated into three components: clean seeds, other plant seeds and impurities. Then the three components are weighed separately (accurate to 0.001g), expressed in grams, and converted into percentages. Specifications of standard test sieves: the sieve height of the round sieve is 50mm and the diameter is 200mm. Genetic single embryo seeds and mechanical single embryo seeds use round hole sieves, and the test sieve aperture for purchasing single embryo seeds is 3.0mm; the test sieve aperture for using single embryo seeds is 2.0mm and 2.0mm~~4.0mm (seed particle size is 0.25mm as a level). Long hole sieves are used for multiple embryo seeds and their coated seeds. The test sieve aperture for purchasing and using diploid seeds is 2.0mm×20mm; the test sieve aperture for purchasing and using polyploid seeds is 2.5mmX20mm, and the test sieve aperture for coated seeds is 2.0mm×20mm-~4.5mm×20mm. B.3 Calculation and expression of results
B.3.1 Calculation of results
B.3.1.1 Check the mass gain or loss during the analysis process. Compare the sum of the masses of various components after analysis with the original mass to check whether there is any gain or loss of substances during the analysis. If the difference in gain or loss exceeds 5% of the original mass, it must be repeated.
B.3.1.2 Calculation of the mass percentage of various components When analyzing the sample, the mass percentage of all components (i.e., net seeds, other plant seeds and impurities) should be calculated to one decimal place. The percentage must be calculated based on the sum of the masses of various components after analysis, rather than the original mass of the test sample. Other plant seeds and impurities are no longer classified for percentage calculation. B.3.1.3 Check the error between repetitions
If it is necessary to analyze a second sample, the actual difference between the components of the two samples shall not exceed the value in Table B.1. If all components are within the tolerance range, take the average value; if it exceeds, analyze another sample; if the difference between the highest and lowest values ​​after analysis is not greater than twice the allowable error, report the average value of the three. If one or more of them are obviously caused by errors, the result must be removed.
B.3.1.4 Rounding
The final reported result of each component should be retained to one decimal place. The sum of each component should be 100.0%, and trace components less than 0.05% should be excluded in the calculation. If the sum is 99.9% or 100.1%, then add or subtract 0.1% from the maximum value (usually the net seed part). If the rounded value is greater than 0.1%, the calculation should be checked for errors. B.3.1.5 The results with heavy impurities are converted into net seeds:
Other plant seeds:
Impurities:
Where:
P(%) = Pi×M=m
OS2(%) = OSt ×
M=m+m× 100
I2(%) = Ii ×
M—mass of the sample to be tested, in grams (g); m
mass of heavy impurities in the sample to be tested, in grams (g); M
-mass of other plant seeds in the heavy impurities in the sample to be tested, in grams (g); mass of impurities in the heavy impurities in the sample to be tested, in grams (g); net seed mass fraction of the sample to be tested after removing heavy impurities, %; Pz net seed mass fraction of the sample to be tested, %; I impurity mass fraction of the sample to be tested after removing heavy impurities, %; I2—--impurity mass fraction of the sample to be tested, %, OS
mass fraction of other plant seeds in the sample to be tested after removing heavy impurities, %; mass fraction of other plant seeds in the sample to be tested, %; Finally, it should be checked that: (P2+I2+OS,)%=100.0%. B.3.2 Result Expression
The purity analysis result is expressed in mass percentage of the three components. The result of the purity analysis should be retained to one decimal place, and the sum of the percentages of various components must be 100%. Components less than 0.05% should be reported as "trace", and if the result of a component is zero, "-0.0-" should be filled in. When the mass percentage of a certain type of impurity or a certain type of other plant seeds reaches or exceeds 1%, the type should be noted in the result report.
Table B.1 Tolerable difference in clarity analysis of the same sample submitted for inspection in the same laboratory (two-tailed determination at a 5% significance level)
Average of two analysis results
Above 50%
99. 95 ~~100. 00
99. 90~~99. 94
99. 85~99. 89
99. 80~99. 84
99. 75~99. 79
Below 50%
0. 00 ~ 0. 04
0.05~0.09
0.10~0.14
0.15-~0.19
0. 20~0. 24
Allowable difference between different measurements
More than 50%
99. 70~99. 74
99.65~99.69
99. 60~~99, 64
99.5599.59
99.50~99.54
99. 40~~99. 49
99. 30~~99.39
99. 20~99.29
99. 10~~99. 19
99. 00~~99. 09
98. 75~~98. 99
98. 50~~98. 74
98. 25~98. 49
98. 00~98. 24
97. 75~~97. 99
97.50~97.74
97, 25~~97. 49
97. 00~97. 24
96. 50~~96. 99
96. 00~96. 49
95. 50~~95. 99
95. 00~~95, 49
94. 00~~94. 99
93. 00~~93. 99
92. 00~~92. 99
91. 00~~91. 99
90. 00~- 90. 99
88.00-~89. 99
86. 00~~87, 99
84.00~-85.99
82. 00~83. 99
80. 00~81.99
78. 00~79. 99
76. 00~77. 99
74. 00~~75. 99
72. 00~73. 99
70. 00~~71. 99
65.00~69.99
60. 00~64. 99
50.00~~59.99
Average of two analysis results
Table B.1 (continued)
Below 50%
0.25~~0.29
0.30~0 .34
0.35~0.39
0.40~0.44
0.45~0.49
0.50~0.59
0.60~0.69
0. 70~0. 79
0.80~0.89
0.90~0.99
1. 00~1. 24
1.25~1.49
1,50~1.74
1.75~1.99
2.00~2.24
2.25~~2. 49
2.50~2.74
2. 75~2. 99
3.00~3.49
3.50~~3.99
4.00~4.49
4.50~4.99
5.00~5.99
6. 00~6.99
7. 00~7.99
8.00~8,99
9.00~~9.99
10.00~11.99
12. 00~~ 13. 99
14. 00~ 15. 99
16.00-17.99
18. 00~~19. 99
20. 00~21. 99
22. 00~~23. 99
24, 00-~25. 99
26. 00 ~~27. 99
28.00~29.99
30.00~34. 99
35.00~39.99
40.00~49.99
GB 19176--2003
Allowable difference between different measurements5 The results with heavy impurities are converted into net seeds:
Other plant seeds:
Impurities:
Wherein:
P(%) = Pi×M=m
OS2(%) = OSt ×
M=m+m× 100
I2(%) = Ii ×
M—the mass of the sample to be tested, in grams (g); m
the mass of heavy impurities in the sample to be tested, in grams (g); M
-the mass of other plant seeds in the heavy impurities in the sample to be tested, in grams (g); the mass of impurities in the heavy impurities in the sample to be tested, in grams (g); the mass fraction of net seeds of the sample to be tested after removing heavy impurities, %; Pz the mass fraction of net seeds of the sample to be tested, %; I the mass fraction of impurities of the sample to be tested after removing heavy impurities, %; I2—--the mass fraction of impurities of the sample to be tested, %, OS
Mass fraction of other plant seeds in the test sample after removing heavy impurities, %; Mass fraction of other plant seeds in the sample sent for inspection, %; Finally, check: (P2+I2+OS,)%=100.0%. B.3.2 Result Expression
The results of purity analysis are expressed as the mass percentage of the three components. The results of purity analysis should be retained to one decimal place, and the sum of the percentages of various components must be 100%. Components less than 0.05% should be reported as "trace", and if the result of a component is zero, "-0.0-" should be filled in. When the mass percentage of a certain type of impurity or a certain type of other plant seeds reaches or exceeds 1%, the type should be indicated in the result report.
Table B.1 Tolerable difference in clarity analysis of the same sample submitted for inspection in the same laboratory (two-tailed determination at a 5% significance level)
Average of two analysis results
Above 50%
99. 95 ~~100. 00
99. 90~~99. 94
99. 85~99. 89
99. 80~99. 84
99. 75~99. 79
Below 50%
0. 00 ~ 0. 04
0.05~0.09
0.10~0.14
0.15-~0.19
0. 20~0. 24
Allowable difference between different measurements
More than 50%
99. 70~99. 74
99.65~99.69
99. 60~~99, 64
99.5599.59
99.50~99.54
99. 40~~99. 49
99. 30~~99.39
99. 20~99.29
99. 10~~99. 19
99. 00~~99. 09
98. 75~~98. 99
98. 50~~98. 74
98. 25~98. 49
98. 00~98. 24
97. 75~~97. 99
97.50~97.74
97, 25~~97. 49
97. 00~97. 24
96. 50~~96. 99
96. 00~96. 49
95. 50~~95. 99
95. 00~~95, 49
94. 00~~94. 99
93. 00~~93. 99
92. 00~~92. 99
91. 00~~91. 99
90. 00~- 90. 99
88.00-~89. 99
86. 00~~87, 99
84.00~-85.99
82. 00~83. 99
80. 00~81.99
78. 00~79. 99
76. 00~77. 99
74. 00~~75. 99
72. 00~73. 99
70. 00~~71. 99
65.00~69.99
60. 00~64. 99
50.00~~59.99
Average of two analysis results
Table B.1 (continued)
Below 50%
0.25~~0.29
0.30~0 .34
0.35~0.39
0.40~0.44
0.45~0.49
0.50~0.59
0.60~0.69
0. 70~0. 79
0.80~0.89
0.90~0.99
1. 00~1. 24
1.25~1.49
1,50~1.74
1.75~1.99
2.00~2.24
2.25~~2. 49
2.50~2.74
2. 75~2. 99
3.00~3.49
3.50~~3.99
4.00~4.49
4.50~4.99
5.00~5.99
6. 00~6.99
7. 00~7.99
8.00~8,99
9.00~~9.99
10.00~11.99
12. 00~~ 13. 99
14. 00~ 15. 99
16.00-17.99
18. 00~~19. 99
20. 00~21. 99
22. 00~~23. 99
24, 00-~25. 99
26. 00 ~~27. 99
28.00~29.99
30.00~34. 99
35.00~39.99
40.00~49.99
GB 19176--2003
Allowable difference between different measurements5 The results with heavy impurities are converted into net seeds:
Other plant seeds:
Impurities:
Wherein:
P(%) = Pi×M=m
OS2(%) = OSt ×
M=m+m× 100
I2(%) = Ii ×
M—the mass of the sample to be tested, in grams (g); m
the mass of heavy impurities in the sample to be tested, in grams (g); M
-the mass of other plant seeds in the heavy impurities in the sample to be tested, in grams (g); the mass of impurities in the heavy impurities in the sample to be tested, in grams (g); the mass fraction of net seeds of the sample to be tested after removing heavy impurities, %; Pz the mass fraction of net seeds of the sample to be tested, %; I the mass fraction of impurities of the sample to be tested after removing heavy impurities, %; I2—--the mass fraction of impurities of the sample to be tested, %, OS
Mass fraction of other plant seeds in the test sample after removing heavy impurities, %; Mass fraction of other plant seeds in the sample sent for inspection, %; Finally, check: (P2+I2+OS,)%=100.0%. B.3.2 Result Expression
The results of purity analysis are expressed as the mass percentage of the three components. The results of purity analysis should be retained to one decimal place, and the sum of the percentages of various components must be 100%. Components less than 0.05% should be reported as "trace", and if the result of a component is zero, "-0.0-" should be filled in. When the mass percentage of a certain type of impurity or a certain type of other plant seeds reaches or exceeds 1%, the type should be indicated in the result report.
Table B.1 Tolerable difference in clarity analysis of the same sample submitted for inspection in the same laboratory (two-tailed determination at a 5% significance level)
Average of two analysis results
Above 50%
99. 95 ~~100. 00
99. 90~~99. 94
99. 85~99. 89
99. 80~99. 84
99. 75~99. 79
Below 50%
0. 00 ~ 0. 04
0.05~0.09
0.10~0.14
0.15-~0.19
0. 20~0. 24
Allowable difference between different measurements
More than 50%
99. 70~99. 74
99.65~99.69
99. 60~~99, 64
99.5599.59
99.50~99.54
99. 40~~99. 49
99. 30~~99.39
99. 20~99.29
99. 10~~99. 19
99. 00~~99. 09
98. 75~~98. 99
98. 50~~98. 74
98. 25~98. 49
98. 00~98. 24
97. 75~~97. 99
97.50~97.74
97, 25~~97. 49
97. 00~97. 24
96. 50~~96. 99
96. 00~96. 49
95. 50~~95. 99
95. 00~~95, 49
94. 00~~94. 99
93. 00~~93. 99
92. 00~~92. 99
91. 00~~91. 99
90. 00~- 90. 99
88.00-~89. 99
86. 00~~87, 99
84.00~-85.99
82. 00~83. 99
80. 00~81.99
78. 00~79. 99
76. 00~77. 99
74. 00~~75. 99
72. 00~73. 99
70. 00~~71. 99
65.00~69.99
60. 00~64. 99
50.00~~59.99
Average of two analysis results
Table B.1 (continued)
Below 50%
0.25~~0.29
0.30~0 .34
0.35~0.39
0.40~0.44
0.45~0.49
0.50~0.59
0.60~0.69
0. 70~0. 79
0.80~0.89
0.90~0.99
1. 00~1. 24
1.25~1.49
1,50~1.74
1.75~1.99
2.00~2.24
2.25~~2. 49
2.50~2.74
2. 75~2. 99
3.00~3.49
3.50~~3.99
4.00~4.49
4.50~4.99
5.00~5.99
6. 00~6.99
7. 00~7.99
8.00~8,99
9.00~~9.99
10.00~11.99
12. 00~~ 13. 99
14. 00~ 15. 99
16.00-17.99
18. 00~~19. 99
20. 00~21. 99
22. 00~~23. 99
24, 00-~25. 99
26. 00 ~~27. 99
28.00~29.99
30.00~34. 99
35.00~39.99
40.00~49.99
GB 19176--2003
Allowable difference between different measurements10～0.14
0.15-~0.19
0. 20~0. 24
Allowable difference between different measurements
More than 50%
99. 70~99. 74
99.65~99.69
99. 60~~99, 64
99.5599.59
99.50~99.54
99. 40~~99. 49
99. 30~~99.39
99. 20~99.29
99. 10~~99. 19
99. 00~~99. 09
98. 75~~98. 99
98. 50~~98. 74
98. 25~98. 49
98. 00~98. 24
97. 75~~97. 99
97.50~97.74
97, 25~~97. 49
97. 00~97. 24
96. 50~~96. 99
96. 00~96. 49
95. 50~~95. 99
95. 00~~95, 49
94. 00~~94. 99
93. 00~~93. 99
92. 00~~92. 99
91. 00~~91. 99
90. 00~- 90. 99
88.00-~89. 99
86. 00~~87, 99
84.00~-85.99
82. 00~83. 99
80. 00~81.99
78. 00~79. 99
76. 00~77. 99
74. 00~~75. 99
72. 00~73. 99
70. 00~~71. 99
65.00~69.99
60. 00~64. 99
50.00~~59.99
Average of two analysis results
Table B.1 (continued)
Below 50%
0.25~~0.29
0.30~0 .34
0.35~0.39
0.40~0.44
0.45~0.49
0.50~0.59
0.60~0.69
0. 70~0. 79
0.80~0.89
0.90~0.99
1. 00~1. 24
1.25~1.49
1,50~1.74
1.75~1.99
2.00~2.24
2.25~~2. 49
2.50~2.74
2. 75~2. 99
3.00~3.49
3.50~~3.99
4.00~4.49
4.50~4.99
5.00~5.99
6. 00~6.99
7. 00~7.99
8.00~8,99
9.00~~9.99
10.00~11.99
12. 00~~ 13. 99
14. 00~ 15. 99
16.00-17.99
18. 00~~19. 99
20. 00~21. 99
22. 00~~23. 99
24, 00-~25. 99
26. 00 ~~27. 99
28.00~29.99
30.00~34. 99
35.00~39.99
40.00~49.99
GB 19176--2003
Allowable difference between different measurements10～0.14
0.15-~0.19
0. 20~0. 24
Allowable difference between different measurements
More than 50%
99. 70~99. 74
99.65~99.69
99. 60~~99, 64
99.5599.59
99.50~99.54
99. 40~~99. 49
99. 30~~99.39
99. 20~99.29
99. 10~~99. 19
99. 00~~99. 09
98. 75~~98. 99
98. 50~~98. 74
98. 25~98. 49
98. 00~98. 24
97. 75~~97. 99
97.50~97.74
97, 25~~97. 49
97. 00~97. 24
96. 50~~96. 99
96. 00~96. 49
95. 50~~95. 99
95. 00~~95, 49
94. 00~~94. 99
93. 00~~93. 99
92. 00~~92. 99
91. 00~~91. 99
90. 00~- 90. 99
88.00-~89. 99
86. 00~~87, 99
84.00~-85.99
82. 00~83. 99
80. 00~81.99
78. 00~79. 99
76. 00~77. 99
74. 00~~75. 99
72. 00~73. 99
70. 00~~71. 99
65.00~69.99
60. 00~64. 99
50.00~~59.99
Average of two analysis results
Table B.1 (continued)
Below 50%
0.25~~0.29
0.30~0 .34
0.35~0.39
0.40~0.44
0.45~0.49
0.50~0.59
0.60~0.69
0. 70~0. 79
0.80~0.89
0.90~0.99
1. 00~1. 24
1.25~1.49
1,50~1.74
1.75~1.99
2.00~2.24
2.25~~2. 49
2.50~2.74
2. 75~2. 99
3.00~3.49
3.50~~3.99
4.00~4.49
4.50~4.99
5.00~5.99
6. 00~6.99
7. 00~7.99
8.00~8,99
9.00~~9.99
10.00~11.99
12. 00~~ 13. 99
14. 00~ 15. 99
16.00-17.99
18. 00~~19. 99
20. 00~21. 99
22. 00~~23. 99
24, 00-~25. 99
26. 00 ~~27. 99
28.00~29.99
30.00~34. 99
35.00~39.99
40.00~49.99
GB 19176--2003
Allowable difference between different measurements99
24. 00-~25. 99
26. 00 ~~27. 99
28.00~29.99
30.00~34. 99
35.00~39.99
40.00~49.99
GB 19176--2003
Allowable difference between different measurements99
24. 00-~25. 99
26. 00 ~~27. 99
28.00~29.99
30.00~34. 99
35.00~39.99
40.00~49.99
GB 19176--2003
Allowable difference between different measurements
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