GB/T 19136-2021 PDF EnglishUS$95.00 · In stock · Download in 9 seconds
GB/T 19136-2021: Testing method of the accelerated storage stability at elevated temperature for pesticides Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 19136: Historical versions
Similar standardsGB/T 19136-2021: Testing method of the accelerated storage stability at elevated temperature for pesticides---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT19136-2021 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 65.100 CCS G 23 Replacing GB/T 19136-2003 Testing method of the accelerated storage stability at elevated temperature for pesticides ISSUED ON: DECEMBER 31, 2021 IMPLEMENTED ON: JULY 01, 2022 Issued by: State Administration for Market Regulation; Standardization Administration of the People's Republic of China. Table of ContentsForeword ... 3 1 Scope ... 5 2 Normative references ... 5 3 Terms and definitions ... 5 4 Test methods ... 5 Testing method of the accelerated storage stability at elevated temperature for pesticides1 ScopeThis document describes a method for the determination of accelerated storage stability of pesticides. This document is applicable to the determination of accelerated storage stability of pesticide preparation products.2 Normative referencesThis document has no normative references.3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply. 3.1 controlled-release formulation through functional materials or controlled release technology, the formulation that the release of active ingredients is purposely controlled and has a long-lasting effect 3.2 long lasting storage bag the storage bag formulation that, through special treatment, the release of active ingredients can be slowed down or controlled, thereby forming physical and chemical control of pests 3.3 matrix release the formulation that slows down or controls the release of active ingredients through the polymer matrix, so as to achieve the purpose of sustained long-term effect4 Test methodsWARNING: Personnel using this document shall have practical experience in laboratory work. This document does not address all security issues. It is the user's responsibility to take appropriate safety and health precautions. 4.1 General Accelerated storage stability test conditions are generally 14 days at 54℃ ± 2℃. The test conditions may be changed when the preparation is neither suitable nor intended for use in hot climates, and when high temperatures have a negative effect on the preparation. Alternative conditions are: 50°C±2°C, 4 weeks; 45°C±2°C, 6 weeks; 40°C±2°C, 8 weeks; 35°C±2°C, 12 weeks; 30°C±2°C, 18 weeks. The sample size of accelerated storage test shall be determined according to the specified items after accelerated storage. Sampling shall be carried out according to the characteristics of different dosage forms. 4.2 Method summary After storing the specimen at 54°C±2°C for 14 days, measure the specified items. 4.3 Instruments 4.3.1 Thermostat: 54°C±2°C, an explosion-proof thermostat shall be used for the aerosol. 4.3.2 Storage containers shall meet the following conditions: a) Liquid preparations, powder preparations, granular preparations, long-term mosquito nets and long-term storage bags shall be in screw-top glass bottles with polytetrafluoroethylene seals or original packaging; b) Aerosols, anti-mosquito nets, dispersing wicks and electric heating mosquito- repellent coils are in original packaging; c) The matrix releases are packaged in aluminum foil paper or in the original commodity packaging; d) For other formulations, a storage container or original product packaging that has no effect on the specimen and can be sealed shall be selected. 4.4 Test steps 4.4.1 Liquid, powder and granule formulations Place the specimen in a glass bottle and seal it. Store in an incubator at 54°C±2°C for 14 d. Take out. Put in a desiccator. Cool to room temperature. Complete the determination of the specified items such as the mass fraction of active ingredients within 24 h. The accelerated storage test can also be carried out directly using the original package of the commodity. 4.4.2 Aerosol ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 19136-2021 be delivered?Answer: The full copy PDF of English version of GB/T 19136-2021 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 19136-2021_English with my colleagues?Answer: Yes. 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