LY/T 1343: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| LY/T 1343-2014 | English | 239 |
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Regulations of apparatus performance on tree seed testing
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LY/T 1343-2014
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| LY/T 1343-1999 | English | 359 |
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Regulations of apparatus performance for tree seed testing
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LY/T 1343-1999
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PDF similar to LY/T 1343-2014
Basic data | Standard ID | LY/T 1343-2014 (LY/T1343-2014) | | Description (Translated English) | Regulations of apparatus performance on tree seed testing | | Sector / Industry | Forestry Industry Standard (Recommended) | | Classification of Chinese Standard | B61 | | Classification of International Standard | 65.020.20 | | Word Count Estimation | 6,660 | | Date of Issue | 8/21/2014 | | Date of Implementation | 12/1/2014 | | Older Standard (superseded by this standard) | LY/T 1343-1999 | | Quoted Standard | GB 2772 | | Regulation (derived from) | State Forestry Bulletin No. 12 2014 | | Issuing agency(ies) | State Forestry Administration | | Summary | This standard specifies the use of forest tree seed testing equipment, infrastructure and performance requirements. This standard applies to tree seed quality testing equipment and technical conditions. | LY/T 1343-2014: Regulations of apparatus performance on tree seed testing---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Regulations of apparatus performance on tree seed testing
ICS 65.020.20
B61
People's Republic of China Forestry Industry Standard
Replacing LY/T 1343-1999
Forest seed testing equipment technical conditions
Published on.2014-08-21
2014-12-01 implementation
State Forestry Administration released
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
Please note that some of the contents of this document may involve patents. Publication of this document
The organization is not responsible for identifying these patents.
This standard replaces LY/T 1343-1999 "Technical Conditions for Forest Seed Testing Instruments". This standard has been modified as follows.
--- Revised the regulations on the use, basic structure and technical conditions of the instrument, including. sampler use, technical conditions, sample separator
Way, basic structure, technical conditions, basic structure of germination box, technical conditions, oven use, basic structure, technical conditions, etc.;
--- Increased electronic balance and incubator items;
--- Removed the net type, inspection mirror and seed inspection necessary equipment, optional instrument items.
This standard is under the jurisdiction of the National Forest Seed Standardization Technical Committee (SAC/TC115).
This standard was drafted. China Forestry Research Institute, Nanjing Forestry University, Beijing Forestry University, Yunnan Forest Seedling Station, Gan
Sustained forest seedlings workstation.
The main drafters of this standard. Li Qingmei, Shen Yongbao, Gao Weidong, Peng Yudeng, Li Jiping, Wang Sang.
The previous versions of the standard replaced by this standard are.
---LY/T 1343-1999.
Forest seed testing equipment technical conditions
1 Scope
This standard specifies the use, basic structure and performance requirements of forest seed testing equipment.
This standard applies to the technical conditions of the instrument for quality inspection of forest seeds.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB 2772 forest seed inspection procedures
3 sampler
3.1 Use
In the implementation of GB 2772 for forest seed sampling, it is used for the extraction of the first sample of bagged small seeds.
3.2 Basic structure
It is a metal tube with a pointed tip, a tube inner diameter of 10mm~14mm, and a pointed length of 60mm. There is a long oval hole near the tip. tube
The length should be able to reach the center of the seed bag.
3.3 Performance requirements
The tube is smooth and has no edges and corners. The tip and the body are tightly connected and the transition is gentle.
4 sampler
4.1 Cone Spectrometer
4.1.1 Use
When performing GB 2772 for forest seed sampling, the sample to be taken from the mixed sample or the sample to be taken from the sample to be sent is taken.
Product, suitable for seeds with high mobility.
4.1.2 Basic structure
It consists of a funnel, a funnel bottom flap, a cone and a partition that divides the seed into two outlets.
4.1.3 Performance requirements
a) The surface of the cone is smooth, the tip of the cone and the center of the funnel are on a vertical line, and the movable switch at the bottom of the funnel is flexible and tight.
b) The weight error of the two seeds passing through the sampler shall not exceed 5% of the average weight of the two seeds.
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