SN/T 3097-2012 English PDF

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SN/T 3097-2012: Determination of total nitrogen in fertilizers. Combustion
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 3097-2012	139	Add to Cart	2 days	Determination of total nitrogen in fertilizers. Combustion	Valid

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Basic data

Standard ID: SN/T 3097-2012 (SN/T3097-2012)
Description (Translated English): Determination of total nitrogen in fertilizers. Combustion
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: G20
Classification of International Standard: 65.080
Word Count Estimation: 5,563
Regulation (derived from): National Quality Inspection (2012) 237;
Issuing agency(ies): General Administration of Customs
Summary: This standard specifies the total nitrogen content of fertilizers combustion analysis. This standard applies to an amount ranging from 1% to 67% of the liquid and solid fertilizers Determination of total nitrogen content.

SN/T 3097-2012: Determination of total nitrogen in fertilizers. Combustion

---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.
Determination of total nitrogen in fertilizers.Combustion People's Republic of China Entry-Exit Inspection and Quarantine Standards Determination of the total nitrogen content of fertilizers Combustion Analysis Issued on. 2012-05-07 2012-11-16 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted. People's Republic of China Shandong CIQ. The main drafters of this standard. Wang Tong habitat, Xu Ming, Jing Ping, Cai hair, Qi Jialin, Li Yan Qiu, WANG Zhao Kun, Liu Jingjie, Wang Chonglin. Determination of the total nitrogen content of fertilizers Combustion Analysis

1 Scope

This standard specifies the method of combustion analysis of total nitrogen content in fertilizers. This standard applies to the determination of an amount ranging from 1% to 67% of liquid and solid fertilizers total nitrogen content.

2 Method summary

Fertilizers high purity oxygen released from the high temperature combustion of nitrogen analyzer quantitative determination of nitrogen combustion.

3 Reagents and materials

3.1 nitrogenous standard substance. standard acid or other nitrogenous substances, purity not less than 99%. Diatomite 3.2. chemically pure. 3.3 Oxygen. purity of greater than 99.99%. 3.4 carbon dioxide. purity of greater than 99.99%.

4 instruments and equipment

4.1 Nitrogen combustion analyzer, furnace temperature greater than 950 ℃. 4.2 Analysis of balance. a sense of the amount of 0.1mg. 4.3 Sample sieve. aperture of 0.5mm. 4.4 foil. 4.5 tin boat. 4.6 mortar. Step 5 Analysis 5.1 Sample Preparation Solid fertilizers by mortar (4.6) after grinding through the sample screen (4.3), alternate; directly after, said liquid fertilizer mixed sample. 5.2 Instrument Calibration 5.2.1 to adjust the furnace temperature above 950 ℃. 5.2.2 Analysis of the nitrogen-containing alternating standard substance (3.1) until the instrument and instrument systems blank blank value system consistent with the initial value and even blank Continued measurement accuracy 10 times the nitrogen content of the standard substance, the difference between the average value of the system and the theoretical value of standard substance 10 times to show the measurement results, Should be less than equal to ± 0.20% N; standard deviation should be less than or equal 0.20% N. 5.3 Determination of the sample 5.3.1 solid samples Weigh accurately prepared samples 0.15g (precise to 0.1mg) placed in aluminum foil (4.4), and with nitrogen calibrated combustion analyzer ......

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