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Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 20552-2023: Pacific oyster Status: Valid GB/T 20552: Historical versions
Basic dataStandard ID: GB/T 20552-2023 (GB/T20552-2023)Description (Translated English): Pacific oyster Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: B51 Classification of International Standard: 65.150 Word Count Estimation: 10,155 Date of Issue: 2023-12-28 Date of Implementation: 2024-07-01 Older Standard (superseded by this standard): GB/T 20552-2006 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 20552-2023: Pacific oyster---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.ICS 65:150 CCSB51 National Standards of People's Republic of China Replace GB/T 20552-2006 long oyster Published on 2023-12-28 2024-07-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee ForewordThis document complies with the provisions of GB/T 1:1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting: This document replaces GB/T 20552-2006 "Pacific Oyster": Compared with GB/T 20552-2006, except for structural adjustment and editorial In addition to the modifications, the main technical changes are as follows: a) The classification status has been changed (see 4:2, 3:2 of the:2006 version); b) Changed the quantifiable trait ratio (see 5:2, 4:1:2:1 of the:2006 version); c) The relationship expressions between shell height and shell length, shell length and body weight have been deleted (see 4:1:2:3 of the:2006 edition); d) Deleted biochemical genetic characteristics and detection methods (see Chapter 7, 8:2 of the:2006 edition); e) Added description of molecular genetic characteristics and detection methods (see Chapter 8, 9:5); f) Added judgment rules (see Chapter 10): Please note that some content in this document may be subject to patents: The publisher of this document assumes no responsibility for identifying patents: This document is proposed by the Ministry of Agriculture and Rural Affairs of the People's Republic of China: This document is under the jurisdiction of the National Fisheries Standardization Technical Committee (SAC/TC156): This document was drafted by: Ocean University of China: The main drafters of this document: Li Qi, Yu Ruihai, Li Haikun, Xu Chengxun, Liu Shikai, Kong Lingfeng, and Yu Hong: The previous versions of this document and the documents it replaces are as follows: ---First released as GB 20552-2006 in:2006, and converted to the recommended national standard GB/T 20552-2006 in:2017; ---This is the first revision: long oyster1 ScopeThe main morphological and structural characteristics, growth and reproduction characteristics, cytogenetic characteristics and molecular genetic characteristics were determined, and the corresponding detection methods were described: The method provides the decision rules: This document applies to the identification and testing of oyster germplasm:2 Normative reference documentsThe contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document: GB/T 18654:2 Inspection of cultured fish germplasm Part 2: Sampling methods GB/T 22213 Aquaculture Terminology GB/T 32757 Shellfish karyotype analysis3 Terms and definitionsThe terms and definitions defined in GB/T 22213 and the following apply to this document: 3:1 shell height shelheight The maximum distance from the top of the shell to the ventral edge of the shell: 3:2 shell length The length of the widest part between the front and rear edges perpendicular to the shell height and parallel to the stranded wires of the two shells:4 Scientific name and classification4:1 Scientific name 4:2 Classification status Mollusca, Bivalvia, Ostreida, Ostreidae, Cras- sostrea):5 Main morphological and structural characteristics5:1 External form The shell is elongated and thin: The left shell is fixed, deeply sunken, and has thick scales; the right shell is flatter, with ringed, corrugated scales, sparsely arranged, and no radial ribs: ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 20552-2023_English be delivered?Answer: Upon your order, we will start to translate GB/T 20552-2023_English as soon as possible, and keep you informed of the progress. 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Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version GB/T 20552-2023?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 20552-2023 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |