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GB/T 12687.3-2010 English PDF

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Q: Should I purchase the latest version GB/T 12687.3-2010?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 12687.3-2010 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$239.00 · In stock
Delivery: <= 2 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 12687.3-2010: Chemical analysis methods of rare earth nitrate for growth regulator for plant -- Part 3: Determination of the water insoluble matter content -- Gravimetry
Status: Obsolete

GB/T 12687.3: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 12687.3-2010	239	Add to Cart	2 days	Chemical analysis methods of rare earth nitrate for growth regulator for plant -- Part 3: Determination of the water insoluble matter content -- Gravimetry	Obsolete
GB/T 12687.3-1990	239	Add to Cart	2 days	Chemical analysis of nitrate of rare earth for agriculture--Determination of arsenic content--Hydride generation flame atomic absorption spectrophotometric method	Obsolete

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Basic data

Standard ID: GB/T 12687.3-2010 (GB/T12687.3-2010)
Description (Translated English): Chemical analysis methods of rare earth nitrate for growth regulator for plant -- Part 3: Determination of the water insoluble matter content -- Gravimetry
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H14
Classification of International Standard: 77.120.99
Word Count Estimation: 6,634
Date of Issue: 2011-01-14
Date of Implementation: 2011-11-01
Older Standard (superseded by this standard): GB/T 12687.8-1990
Regulation (derived from): National Standard Approval Announcement 2011 No.2; National Standard Announcement 2012 No.37
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the rare earth nitrate plant growth regulator Determination Agent the amount of water insolubles. This section applies to the determination of rare earth nitrate plant growth regulator agent water insolubles content. Measuring range: 0. 10% to 0. 30 %.

GB/T 12687.3-2010: Chemical analysis methods of rare earth nitrate for growth regulator for plant -- Part 3: Determination of the water insoluble matter content -- Gravimetry

---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.
Chemical analysis methods of rare earth nitrate for growth regulator for plant Part 3. Determination of the water insoluble matter content Gravimetry. ICS 77.120.99 H14 National Standards of People's Republic of China Replacing GB/T 12687.8-1990 Rare earth nitrate plant growth regulator chemical analysis Part 3. Determination of the amount of water insoluble gravimetric method Part 3. Determinationofthewaterinsolublemattercontent- Gravimetry Issued on. 2011-01-14 2011-11-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 12687 "analysis of rare earth nitrate plant growth regulator chemical" is divided into three parts. --- Part 1. arsenic, mercury, lead, cadmium, chromium content - Inductively Coupled Plasma Mass Spectrometry; --- Part 2. Determination of chlorine content; --- Part 3. Determination of the amount of water insoluble gravimetric method. This is Part 3. This Part replaces GB/T 12687.8-1990 "Determination of water insoluble matter content of agricultural chemical analysis of rare earth nitrate gravimetric method." This section compared with the GB/T 12687.8-1990, have the following main changes. --- Measurement range limit adjustment from the 1.0 to 0.3 percent; --- Increasing the precision of the terms; --- Increased quality assurance and control provisions; --- Standard text made editorial changes. This part of the National Standardization Technical Committee of rare earth (SAC/TC229) centralized. This part by the Beijing Nonferrous Metal Research Institute, China Nonferrous Metals Industry Institute of Standards Metrology and Quality is responsible for drafting. This section is Baotou Steel Rare Earth Hi-Tech Company, Jiangyin Jiahua Advanced Material Resources Co., Ltd. participated in the drafting. The main drafters of this section. Bing, Liu Pengyu. The drafters of some of the participants. Zhanggui Mei, Yao Jingbi. This part of the alternative criteria previously issued as follows. --- GB/T 12687.8-1990. Rare earth nitrate plant growth regulator chemical analysis Part 3. Determination of the amount of water insoluble gravimetric method

1 Scope

GB/T 12687 provisions of this part of the rare earth nitrate plant growth regulator agents Determination of the amount of water insoluble. This section applies to the determination of rare earth nitrate plant growth regulator agent in water-insoluble matter content. Measuring range. 0.10% to 0.30%.

2 principle of the method

The sample is dissolved in water, insoluble matter was separated by filtration which is calculated by the amount of water insoluble mass value after drying.

3 Instrument

3.1 electric oven.200 ℃ ± 2 ℃. 3.2 Analysis of balance. a sense of the amount of 0.1mg. 3.3 glass sand funnel (filter funnel acid). P16.

4 Sample

Weighing the sample immediately after the opening. Step 5 Analysis 5.1 Sample Weigh the sample (4) 20g, accurate to 0.0001g. 5.2 Determination of the number of Weigh two samples (5.1) parallel determination of the mean value. 5.3 Determination 5.3.1 The sample (5.1) into 600mL beaker, 500mL about 60 ℃ hot water, cover the dish table. Heated to a boil in 60 ℃ ~ 80 ℃ incubated 45min, intermediate Stir a few times to completely dissolve the soluble salts, is cooled. 5.3.2 with the constant weight of glass sand funnel (3.3) by suction. Beaker with warm water 3 to 5 times, water insoluble 7-8 times. 5.3.3 The glass sand funnel (3.3) together with water-insoluble substance is placed in the oven (3.2) at 105 ℃ ~ 110 ℃ drying 1h, desiccator The cooling to room temperature, and weighed. 5.3.4 5.3.3 Repeat until the difference between two adjacent mass does not exceed 1mg.

6 Calculation and presentation of analysis results

According to equation (1) calculate the water insoluble mass fraction (%). w (water insoluble) = m1-m0m × 100 (1) Where. Mass m1 --- glass filter and water-insoluble material in grams (g); m0 --- glass filter mass in grams (g); M --- quality of the sample in grams (g). ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 12687.3-2010_English be delivered?

Answer: Upon your order, we will start to translate GB/T 12687.3-2010_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 2 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 12687.3-2010_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 12687.3-2010_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 12687.3-2010?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 12687.3-2010 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.