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

GB/T 40968-2021 English PDF

Q: How long will the true-PDF of English version of GB/T 40968-2021 be delivered?

Upon your order, we will start to translate GB/T 40968-2021_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.

Q: Can I share the purchased PDF of GB/T 40968-2021_English with my colleagues?

Yes. The purchased PDF of GB/T 40968-2021_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$209.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 40968-2021: Test method of polycylic aromatic hydrocarbons in musical instrument
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 40968-2021	209	Add to Cart	3 days	Test method of polycylic aromatic hydrocarbons in musical instrument	Valid

Similar standards

GB/T 41106.1 GB/T 41097 SN/T 0869 GB/T 10159 GB 28489

Basic data

Standard ID: GB/T 40968-2021 (GB/T40968-2021)
Description (Translated English): Test method of polycylic aromatic hydrocarbons in musical instrument
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Y58
Word Count Estimation: 11,137
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 40968-2021: Test method of polycylic aromatic hydrocarbons in musical instrument

---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.
Test method of polycylic aromatic hydrocarbons in musical instrument ICS 97.200.20 CCSY58 National Standards of People's Republic of China Test method for polycyclic aromatic hydrocarbons in musical instrument products Released on 2021-11-26 2022-06-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

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" Drafting. Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document was proposed by the China National Light Industry Council. This document is under the jurisdiction of the National Musical Instrument Standardization Technical Committee (SAC/TC371). This document was drafted by. Yinfei Technology (Jiangsu) Co., Ltd., Beijing Musical Instrument Research Institute, Zhongzheng Yingtai Testing Technology Co., Ltd., Guangzhou Zhu Jiang Piano Group Co., Ltd., Changzhou Hongtai Wood Industry Co., Ltd., National Light Industry Musical Instrument Quality Supervision and Testing Center. The main drafters of this document. Fan Tingguo, Zhu Xiaohong, Guo Ting, Wang Minchao, Wang Wei, Zhang Xiaochuan, Zhu Yixin, Xiao Wei, Qin Hongwei, Jia Yue, Zhou Yanqing, Hu Xiaopeng. Test method for polycyclic aromatic hydrocarbons in musical instrument products Warning. The personnel using this document should have practical experience in formal laboratory work. This document does not point out all possible security issues. The user is responsible for taking appropriate safety and health measures and ensuring compliance with the conditions stipulated by relevant national laws and regulations.

1 Scope

This document specifies the reagents, instruments and devices, sample preparation, and testing of 16 polycyclic aromatic hydrocarbons (see Appendix B) in musical instrument products. Steps, calculation results, detection limit, precision and accuracy, test report. This document is applicable to the testing of polycyclic aromatic hydrocarbons in musical instruments, musical instrument accessories and indoor musical instrument packaging.

2 Normative references

The content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations Only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to This document. GB/T 12806 Laboratory glassware single mark volumetric flask

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Polycyclic aromatic hydrocarbons; PAHs A compound formed by condensing two or more benzene rings or cyclopentadiene.

4 Method summary

Ultrasonic extraction is used, and the appropriate purification method is selected according to the interference of the sample matrix. Spectrometer (GC-MS) was used for the determination, and the internal standard method was used for quantification.

5 Reagents

5.1 n-hexane. chromatographically pure. 5.2 Acetone. Chromatographically pure. 5.3 Toluene. chromatographically pure. 5.4 Isopropanol. chromatographically pure. 5.5 Mixed solvent of n-hexane-acetone. prepare n-hexane (5.1) and acetone (5.2) in a volume ratio of 1.1. 5.6 Nitrogen. purity ≥99.99%. 5.7 Helium. purity ≥99.999%. 5.8 Standard stock solution of polycyclic aromatic hydrocarbons. mass concentration ρ=1000μg/mL~5000μg/mL, commercially available certified standard solution. 5.9 Standard working solution of polycyclic aromatic hydrocarbons. mass concentration ρ=200μg/mL~500μg/mL, diluted with n-hexane-acetone mixed solvent (5.5) ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 40968-2021_English be delivered?

Answer: Upon your order, we will start to translate GB/T 40968-2021_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 40968-2021_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 40968-2021_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.