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GB/T 41437-2022 English PDF

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US$189.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 41437-2022: Determination of naringin and denatonium benzoate in finger paints - High performance liquid chromatography
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 41437-2022	189	Add to Cart	3 days	Determination of naringin and denatonium benzoate in finger paints - High performance liquid chromatography	Valid

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Basic data

Standard ID: GB/T 41437-2022 (GB/T41437-2022)
Description (Translated English): Determination of naringin and denatonium benzoate in finger paints - High performance liquid chromatography
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Y57
Word Count Estimation: 9,945
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 41437-2022: Determination of naringin and denatonium benzoate in finger paints - High performance liquid chromatography

---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 naringin and denatonium benzoate in finger paints -- High performance liquid chromatography ICS 97.200.50 CCSY57 National Standards of People's Republic of China Bitter agents naringin and denatonium benzoate in finger paints Content Determination by High Performance Liquid Chromatography Published on 2022-04-15 2022-04-15 Implementation State Administration for Market Regulation Released by the National Standardization Administration

foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" drafted. Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed by China National Light Industry Federation. This document is under the jurisdiction of the National Toy Standardization Technical Committee (SAC/TC253). This document is drafted by. Shanghai Customs Mechanical and Electrical Products Testing Technology Center, Shenzhen Institute of Metrology and Quality Testing, Fujian Mingta Toys Co., Ltd. Co., Ltd., Beijing Zhongqinglian Certification Center Co., Ltd., China Testing and Certification Group Co., Ltd., Guangzhou Customs Technology Center. The main drafters of this document. Wei Biwen, Wang Xiuli, Feng Anhong, Yang Jun, Lan Wenqing, Du Yulin, Yang Danhua. Bitter agents naringin and denatonium benzoate in finger paints Content Determination by High Performance Liquid Chromatography Caution - Persons using this document should have practical experience in formal laboratory work. This document does not address all possible security issues question. It is the user's responsibility to take appropriate safety and health measures and to ensure compliance with the conditions stipulated by relevant national regulations.

1 Scope

This document describes a high-performance liquid chromatography method for the determination of naringin and denatonium benzoate in finger paints. This document applies to the determination of naringin and denatonium benzoate in finger paints.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document. GB/T 6682 Analysis Laboratory Water Specifications and Test Methods

3 Terms and Definitions

There are no terms and definitions that need to be defined in this document.

4 Principles

Ethanol was used as the extraction solvent, ultrasonically extracted for 10 min, centrifuged, the supernatant was taken out, the residue was extracted again, and the two extractions were combined. The liquid was evaporated to near dryness, and 50% methanol aqueous solution was added to dissolve the residue. After filtration, high performance liquid chromatography was used for separation and diode array detection. Quantification by external standard method.

5 Reagents and Materials

The following reagents, unless otherwise specified, use only chromatographically pure reagents and above. The laboratory water meets the first-class water specified in GB/T 6682 Require. 5.1 Ethanol. 5.2 Methanol. 5.3 50% methanol aqueous solution (volume fraction). 5.4 Acetonitrile. 5.5 Potassium dihydrogen phosphate. 5.6 Phosphoric acid. 5.7 0.02mol/L potassium dihydrogen phosphate solution (pH=4.3). weigh 2.72g potassium dihydrogen phosphate (5.5), dissolve it in accordance with GB/T 6682 In the first-grade water, the volume was adjusted to 1L, and the pH value was adjusted to 4.3 with phosphoric acid (5.6). ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 41437-2022_English be delivered?

Answer: Upon your order, we will start to translate GB/T 41437-2022_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 41437-2022_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 41437-2022_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.