T/CNRA 001-2018 Active Group standards

T/CNRA 001-2018 Specifications for Concentrated Natural Latex and Ammonia-Free Preserved Centrifugal Latex

T/CNRA 001-2018

Publish Date: 2019-01-22 Implement Date: 2019-02-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CNRA 001-2018

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Forestry chemical raw materials

ICS Name: Terminology (principles and coordination and cooperation)

Publish Date: 2019-01-22

Implement Date: 2019-02-01

Scope

Main Technical Content: ICS 83.040.10B 72 Group Standard T/CNRA 001—2019 Preface This standard was drafted in accordance with the rules set forth in GB/T 1.1-2009. It was prepared by Hainan Natural Rubber Industry Group Co., Ltd. and Beijing Tianyi RuiBo Technology Development Co., Ltd. The main drafters of this standard are Cai Dukun, Lu Ying, Yuan Ruiquan, Wu Lingjiang, Guo Xiong, Zhang Bin, and Huang Xiangqian. **Concentrated Natural Latex without Ammonia Preservation and Centrifuged Latex** **Specifications** 1 This standard specifies the requirements for concentrated natural latex that is preserved without ammonia and produced by centrifugation. 2 Normative Reference Documents The following documents are essential for the application of this document. For dated references, only the version on the specified date applies to this document. For undated references, the latest version (including all amendment sheets) applies to this document. GB/T 8290 Concentrated Natural Latex—Sampling GB/T 8291 Concentrated Natural Latex—Determination of Coagulum Content (Sieve Residue) GB/T 8292 Concentrated Natural Latex—Determination of Volatile Fatty Acid Value GB/T 8293 Concentrated Natural Latex—Determination of Residue Content GB/T 8295 Determination of Copper Content in Natural Rubber and Latex—Photometric Method GB/T 8296 Determination of Manganese Content in Natural Rubber and Latex—Sodium Metaperiodate Photometric Method GB/T 8298 Determination of Total Solids Content in Latex—GB/T 8298 GB/T 8299 Determination of Dry Rubber Content in Concentrated Natural Latex GB/T 8300 Determination of Alkalinity in Concentrated Natural Latex GB/T 8301 Determination of Mechanical Stability in Concentrated Natural Latex 3 Terms and Definitions 3.1 **Centrifuged Latex without Ammonia Preservation** A concentrated natural latex processed by centrifugation and preserved without ammonia. 4 Requirements Centrif