GB/T 32141-2015 English PDF

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GB/T 32141-2015: Determination of the total volatile basic nitrogen in feed
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 32141-2015	109	Add to Cart	3 days	Determination of the total volatile basic nitrogen in feed	Valid

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Basic data

Standard ID: GB/T 32141-2015 (GB/T32141-2015)
Description (Translated English): Determination of the total volatile basic nitrogen in feed
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: B46
Classification of International Standard: 65.120
Word Count Estimation: 5,540
Date of Issue: 2015-10-09
Date of Implementation: 2016-05-01
Quoted Standard: GB/T 601; GB/T 6682; GB/T 14699.1; GB/T 20195
Regulation (derived from): National Standard Announcement 2015 No.31
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 method for the determination of volatile basic nitrogen feed. This standard applies to the determination of animal protein feed ingredients and feed products containing animal protein feed ingredients in volatile basic nitrogen.

GB/T 32141-2015: Determination of the total volatile basic nitrogen in feed

---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 the total volatile basic nitrogen in feed ICS 65.120 B46 National Standards of People's Republic of China Determination of volatile basic nitrogen feed Issued on. 2015-10-09 2016-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard by the National Feed Industry Standardization Technical Committee (SAC/TC76) and focal points. This standard was drafted. Guangdong Academy of Agricultural Sciences Agricultural public monitoring center. The main drafters of this standard. He Qixia, Ji Tian Rong, Linxue Xian, Heyuan Yi, added Qian, Miao Yin autumn. Determination of volatile basic nitrogen feed

1 Scope

This standard specifies the method for the determination of volatile basic nitrogen feed. This standard applies to animal protein feed ingredients and feed products containing animal protein feed ingredients in volatile basic nitrogen Determination.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. Preparation of GB/T 601 chemical reagent standard titration solution Laboratory use specifications and test methods GB/T 6682 Analysis GB/T 14699.1 feed samples GB/T 20195 Animal feed sample preparation Principle 3 Sample volatile basic nitrogen with perchloric acid liquid extraction, the extract was made basic, distillation, absorption of boric acid absorption solution, then with hydrochloric acid standard Standard solution titration, calculate the content.

4 Reagents and solutions

This standard reagents used were of analytical grade. 4.1 Water. in line with GB/T 6682 in three water requirements. 4.2 perchloric acid solution (0.6mol/L). amount of perchlorate 50.0mL, add water to 1000mL. 4.3 Sodium hydroxide solution (40g/L). Weigh sodium hydroxide 40g, dissolved in water and diluted to 1000mL. 4.4 hydrochloric acid standard solution [c (HCl) ≈0.01mol/L]. lessons of concentrated hydrochloric acid 0.85mL, add water to 1000mL, shake, press GB/T 601 methods for calibration. 4.5 boric acid absorption solution (10g/L). Weigh boric acid 10g, was dissolved in 1000mL of water. 4.6 silicone defoamers. Mixed indicator 4.7. 0.1% methyl red ethanol solution and 0.5% bromocresol green ethanol solution mixed in equal volumes, prepared before use. 4.8 methyl red indicator (10g/L). Weigh methyl red indicator 1g, dissolved in 100mL95% ethanol. 5. Apparatus 5.1 laboratory sample grinder or mortar. 5.2 sieve. aperture 0.45mm. 5.3 Analysis of balance. a sense of the amount of 0.1mg. ......

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