Home Cart Quotation About-Us
www.ChineseStandard.net
SEARCH

GB/T 38424-2019 English PDF

Q: How long will the true-PDF of English version of GB/T 38424-2019 be delivered?

Upon your order, we will start to translate GB/T 38424-2019_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Q: Can I share the purchased PDF of GB/T 38424-2019_English with my colleagues?

Yes. The purchased PDF of GB/T 38424-2019_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Q: Does the price include tax/VAT?

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). Avoidance of Double Taxation Agreements (DTAs) between Singapore and 100+ Countries: https://www.iras.gov.sg/taxes/international-tax

Q: Do you accept my currency other than USD?

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.

US$359.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 38424-2019: Determination of allergenic fragrances in toys - Gas chromatographic-mass spectrometry
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 38424-2019	359	Add to Cart	4 days	Determination of allergenic fragrances in toys - Gas chromatographic-mass spectrometry	Valid

Similar standards

GB/T 39079 GB/T 39043 GB/T 38423 GB/T 38420 GB/T 38415

Basic data

Standard ID: GB/T 38424-2019 (GB/T38424-2019)
Description (Translated English): Determination of allergenic fragrances in toys - Gas chromatographic-mass spectrometry
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Y57
Classification of International Standard: 97.200.50
Word Count Estimation: 18,181
Date of Issue: 2019-12-31
Date of Implementation: 2019-12-31
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 38424-2019: Determination of allergenic fragrances in toys - Gas chromatographic-mass spectrometry

---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 allergenic fragrances in toys--Gas chromatographic-mass spectrometry ICS 97.200.50 Y57 National Standards of People's Republic of China Determination of allergenic fragrance in toys GC-MS 2019-12-31 release 2019-12-31 implementation State Administration of Market Supervision Published by the National Standardization Administration

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. Please note that some elements of this document may involve patents. The issuer of this document is not responsible for identifying these patents. This standard is proposed by the China Light Industry Federation. This standard is under the jurisdiction of the National Toy Standardization Technical Committee (SAC/TC253). This standard was drafted. Shenzhen Metrology and Quality Inspection Research Institute, Yike Testing and Certification Co., Ltd., Guangdong Entry-Exit Inspection and Quarantine Bureau Inspection and Quarantine Technology Center Toys and Baby Products Laboratory, Shanghai Entry-Exit Inspection and Quarantine Bureau Mechanical and Electrical Products Testing Technology Center, Zhejiang Fangyuan Testing Set Group Co., Ltd., Shenzhen Entry-Exit Inspection and Quarantine Bureau Toy Testing Technology Center, National Daily Commodity Quality Supervision and Inspection Center, Guangdong Yuedong Toy Testing Center of the Entry-Exit Inspection and Quarantine Bureau, SGS-CSTC Standard Technical Service Co., Ltd., and Beijing China Light Union Certification Center. The main drafters of this standard. Huang Zhiyong, Chen Liqiong, Ant Lezhou, Tao Xiaomei, Wei Biwen, Liao Shangfu, Xu Tiangui, Chen Dewen, Lin Yin, Xing Yuanna and He Xiaoyan. Determination of allergenic fragrance in toys GC-MS Caution --- Personnel using this standard should have formal laboratory work and practical experience. This standard does not address all possible security issues. question. It is the responsibility of the user to take appropriate safety and health measures and to ensure compliance with the conditions stipulated by relevant national regulations.

1 Scope

This standard specifies the gas chromatography-mass spectrometry method for determination of 47 allergenic fragrances in toy materials. This standard applies to the determination of 47 allergenic fragrances in toy materials. Other allergenic fragrances can be referenced after verification Perform the measurement.

2 Principle

After the sample preparation, dichloromethane was used for ultrasonic extraction at room temperature. After the extract was filtered through a membrane, a gas chromatography-mass spectrometer was used. (GC-MS) determination, quantification by external standard method.

3 Reagents and materials

3.1 Dichloromethane. chromatographically pure. 3.2 Standards. The purity is not less than 90.0%. For information about allergenic fragrance standards, see Table A.1 in Appendix A. 3.3 Standard stock solutions (1000mg/L each). Accurately weigh appropriate amounts of each standard (3.2) and prepare with dichloromethane (3.1) The standard stock solutions with a concentration of 1000mg/L were stored at 4 ℃. 3.4 Standard mixed working solution. 47 dilutions of standard stock solution (3.3) are mixed and diluted with dichloromethane (3.1) by using stepwise dilution Standard mixed working solutions with a mass concentration of 0.5mg/L, 2mg/L, 10mg/L, 30mg/L and 50mg/L, used to make standards curve. 3.5 Microporous membrane. organic phase, pore size 0.22μm.

4 Equipment

4.1 Gas chromatograph-mass spectrometer. with EI source. 4.2 Analytical balance. accurate to 0.1 mg. 4.3 Vortex the mixer. 4.4 Ultrasonic Extractor. 4.5 Centrifuge. The rotation speed is not less than 6000r/min. 4.6 Corked glass bottles.

5 Preparation and extraction of samples

5.1 Sample preparation For liquid samples, shake well before weighing; for solid samples, mechanical separation makes the sample into multiple single materials, and then separates the materials ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 38424-2019_English be delivered?

Answer: Upon your order, we will start to translate GB/T 38424-2019_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 38424-2019_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 38424-2019_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.