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SN/T 1921-2007 English PDF

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US$579.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
SN/T 1921-2007: Determination of residue of flumequine in foodstuffs of animal origin for import and export. LC-MS/MS method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 1921-2007	579	Add to Cart	3 days	Determination of residue of flumequine in foodstuffs of animal origin for import and export. LC-MS/MS method	Valid

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Basic data

Standard ID: SN/T 1921-2007 (SN/T1921-2007)
Description (Translated English): Determination of residue of flumequine in foodstuffs of animal origin for import and export. LC-MS/MS method
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: C53
Classification of International Standard: 67.020
Word Count Estimation: 18,174
Date of Issue: 2007-05-23
Date of Implementation: 2007-12-01
Regulation (derived from): National-accreditation-Science [2011] 63
Issuing agency(ies): General Administration of Customs
Summary: This standard specifies the animal-derived foods flumequine residue liquid chromatography mass spectrometry/mass spectrometry. This standard applies to animal tissues, organs, eggs, milk, fish and shrimps flumequine residue testing.

SN/T 1921-2007: Determination of residue of flumequine in foodstuffs of animal origin for import and export. LC-MS/MS method

---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 residue of flumequine in foodstuffs of animal origin for import and export.LC-MS/MS method Exit inspection and quarantine industry standard book People's Republic of China Import and export of animal-derived foods Flumequine Residues Detection Liquid chromatography - mass spectrometry/mass spectrometry Posted 2007-05-23 2007-12-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

The Standard Appendix A and Appendix B is an informative annex. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. The standard by the China Academy of Inspection and Quarantine is responsible for drafting. The main drafters of this standard. Peng Tao, Ann Juan, Guo Wei, Li Xiaojuan, spear Yan, Xu Li, Tang Ying Zhang, Chu Xiaogang. This standard is the first release of the entry-exit inspection and quarantine industry standards. Import and export of animal-derived foods Flumequine Residues Detection Liquid chromatography - mass spectrometry/mass spectrometry

1 Scope

This standard specifies the Flumequine residues in foods of animal origin by liquid chromatography - mass spectrometry/mass spectrometry. This standard applies to animal tissues, organs, eggs, milk, fish and shrimp Flumequine residues detected.

2 Sample Preparation and Storage

2.1 animal tissues, organs, fish and shrimp Samples taken from the original representative sample of about 500g, with a full organization stamp mill crushed mix, are divided into two, respectively, into a clean container As a sample, sealed and marked with tags. The sample was placed in -18 ℃ freezer stored. 2.2 Egg Samples taken from the original representative sample of about 500g, peeled with a tissue after stirring thoroughly mixed stamp mill, are divided into two, respectively, into Clean as a sample container, sealed and marked with tags. The sample was placed at 4 ℃ stored. 2.3 milk Samples taken from the original representative sample of about 500g, with a stamp mill and mix well organized, are divided into two, respectively, into a clean container for As a sample, sealed and marked with tags. The sample was placed at 4 ℃ stored. In the sample preparation procedure, it should prevent sample contamination or the occurrence of the change of residue content.

3 Method summary

Sample extraction residue Flumequine with phosphate buffer, and acetonitrile, dried hexane to remove fat, after C18 solid-phase extraction (SPE), the use of Liquid chromatography - mass spectrometry/mass spectrometry, external standard.

4 Reagents and materials

Unless otherwise noted, all reagents were of analytical grade, water is deionized water or equivalent purity. 4.1 acetonitrile. HPLC fractions. 4.2 hexane. HPLC fractions. 4.3 Methanol. HPLC fractions. 4.4 phosphoric acid. 4.5 potassium dihydrogen phosphate. 4.6 sodium hydroxide. 4.7 Ammonia. 25%. 4.8 formic acid. HPLC fractions. 4.9 ammonium acetate. 4.10 acetonitrile saturated with n-hexane. 100mL to 100mL acetonitrile was added n-hexane, followed by sufficient shaking, standing layer, the upper layer of acetonitrile spare. 4.11 phosphate buffer (0.05mol/L, pH7.4 ± 0.2). exact Pipette 250mL0.2mol/L aqueous solution of potassium dihydrogen phosphate and 197.5mL0.2mol/L aqueous sodium hydroxide solution in 1L volumetric flask, add water 500mL, with phosphoric acid or sodium hydroxide to adjust pH7.4 ± 0.2, water volume to 1L. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of SN/T 1921-2007_English be delivered?

Answer: Upon your order, we will start to translate SN/T 1921-2007_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 SN/T 1921-2007_English with my colleagues?

Answer: Yes. The purchased PDF of SN/T 1921-2007_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.