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GB/T 20937-2018 English PDF

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Q: Should I purchase the latest version GB/T 20937-2018?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 20937-2018 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.

US$179.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 20937-2018: Potassium magnesium of sulphate fertilizer
Status: Valid

GB/T 20937: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 20937-2018	179	Add to Cart	3 days	Potassium magnesium of sulphate fertilizer	Valid
GB/T 20937-2007	319	Add to Cart	3 days	Potassium magnesium of sulphate fertilizer	Obsolete

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Basic data

Standard ID: GB/T 20937-2018 (GB/T20937-2018)
Description (Translated English): Potassium magnesium of sulphate fertilizer
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G21
Classification of International Standard: 65.080
Word Count Estimation: 9,912
Date of Issue: 2018-05-14
Date of Implementation: 2018-12-01
Older Standard (superseded by this standard): GB/T 20937-2007
Quoted Standard: GB/T 6549; GB/T 6679; GB/T 6682; GB/T 8170; GB/T 8569; GB/T 8576; GB/T 8577; GB 18382; GB/T 19203; GB/T 22923; GB/T 23349; GB/T 24890; GB/T 24891; HG/T 2843; HG/T 4365
Regulation (derived from): National Standards Announcement No. 6 of 2018
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration
Summary: This standard specifies the terms and definitions, requirements, test methods, inspection rules, marking, packaging, transportation and storage of potassium magnesium fertilizer. This standard applies to potassium sulfate and magnesium sulfate products containing magnesium, sulphur and other medium-sized elements that have been extracted only by physical methods or directly removed from salt lake brines or solid potassium magnesium salt minerals. This standard does not apply to products that have been blended with potassium sulfate and magnesium compounds.

GB/T 20937-2018: Potassium magnesium of sulphate fertilizer

---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.
Potassium magnesium of sulphate fertilizer ICS 65.080 G21 National Standards of People's Republic of China Replace GB/T 20937-2007 Potassium sulfate magnesium fertilizer Published on.2018-05-14 2018-12-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 20937-2007 "potassium sulfate magnesium fertilizer", compared with GB/T 20937-2007, the main technical changes are as follows. --- Modified free water, chloride ion, particle size, water insolubles index (see 4.2,.2007 edition 4.2); --- Increased sodium ion, arsenic, cadmium, lead, chromium, mercury limit requirements (see 4.2); --- Automatic analyzer method to increase the content of potassium oxide (see 5.3.2); --- Increased sodium ion determination method (see 5.7); --- Modified the determination method of water insoluble matter (see 5.9); --- Increased methods for determination of arsenic, cadmium, lead, chromium and mercury (see 5.12); --- Added some QR code or barcode to mark some product information (see 7.4). This standard was proposed by the China Petroleum and Chemical Industry Federation. This standard is under the jurisdiction of the National Fertilizer and Soil Conditioning Standardization Technical Committee Potash Subcommittee Technical Committee (SAC/TC105/SC4). This standard was drafted. Shanghai Chemical Research Institute Co., Ltd., SDIC Xinjiang Lop Nur Potassium Salt Co., Ltd., Qinghai Salt Lake Industrial Co., Ltd. Co., Ltd. The main drafters of this standard. Zhou Qingyun, Lei Guangyuan, Qu Xiaorong, Wang Shijun, Yang Yuming, Xu Chen, Wu Zepei, Shi Rong, Yang Yi. This standard was first published in June.2007. Potassium sulfate magnesium fertilizer

1 Scope

This standard specifies the terms and definitions, requirements, test methods, inspection rules, marking, packaging, transportation and storage of potassium and magnesium sulfate. This standard is applicable to magnesium, sulfur, etc. made from salt lake brine or solid potassium magnesium salt ore only by physical extraction or direct removal of impurities. A medium amount of potassium sulfate and magnesium fertilizer products. This standard does not apply to products blended with potassium sulfate and magnesium compounds.

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/T 6549 potassium chloride GB/T 6679 Solid Chemical Products Sampling General GB/T 6682 Analytical laboratory water specifications and test methods GB/T 8170 Numerical Rounding Rules and Representation and Determination of Limit Values GB/T 8569 solid chemical fertilizer packaging GB/T 8576 Compound fertilizers - Determination of free water content - Vacuum oven method Determination of free water content in GB/T 8577 compound fertilizers Karl Fischer method GB 18382 Fertilizer identification content and requirements Determination of Calcium, Magnesium and Sulfur in GB/T 19203 Compound Fertilizer GB/T 22923 Determination of nitrogen, phosphorus and potassium in fertilizers by automatic analyzer GB/T 23349 Fertilizers arsenic, cadmium, lead, chromium, mercury ecological indicators Determination of Chloride Ion Content in GB/T 24890 Compound Fertilizer Determination of particle size of GB/T 24891 compound fertilizer HG/T 2843 chemical fertilizer products commonly used in standard titration solutions, standard solutions, reagent solutions and indicator solutions HG/T 4365 water soluble fertilizer

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 a medium-sized element containing magnesium and sulfur, which is prepared by physical extraction or direct removal of impurities from salt lake brine or solid potassium magnesium salt mine. The combined potassium fertilizer. Note. The molecular formula is K2SO4·(MgSO4)m·nH2O, where m=1~2; n=0~6.

4 requirements

4.1 Appearance. powdery crystal or granular product, no visible mechanical impurities. ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 20937-2018_English be delivered?

Answer: Upon your order, we will start to translate GB/T 20937-2018_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 20937-2018_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 20937-2018_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 20937-2018?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 20937-2018 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.