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GB/T 39307-2020 English PDF

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US$79.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 39307-2020: (Fluorescent brighteners Determination of shade and brightening intensity Plastic coloring method)
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 39307-2020	79	Add to Cart	3 days	(Fluorescent brighteners Determination of shade and brightening intensity Plastic coloring method)	Valid

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Basic data

Standard ID: GB/T 39307-2020 (GB/T39307-2020)
Description (Translated English): (Fluorescent brighteners Determination of shade and brightening intensity Plastic coloring method)
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G55
Word Count Estimation: 4,439
Date of Issue: 2020-11-19
Date of Implementation: 2021-10-01
Regulation (derived from): National Standard Announcement No. 26 of 2020
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 39307-2020: (Fluorescent brighteners Determination of shade and brightening intensity Plastic coloring 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.
(Fluorescent brighteners Determination of shade and brightening intensity Plastic coloring method) ICS 71.100.01;87.060.10 G55 National Standards of People's Republic of China Determination of Fluorescent Brightener Shade and Brightening Intensity Plastic coloring method 2020-11-19 released 2021-10-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the China Petroleum and Chemical Industry Federation. This standard is under the jurisdiction of the National Dyestuff Standardization Technical Committee (SAC/TC134). Drafting organizations of this standard. Zhejiang Chuanhua Huayang Chemical Co., Ltd., Shenzhen Bicolor Dyestuff Technology Co., Ltd., Shenyang Chemical Research Institute Co., Ltd., Shenyang Shenhua Institute Testing Technology Co., Ltd., National Dyestuff Quality Supervision and Inspection Center. The main drafters of this standard. Song Yanru, Wang Yong, Liang Peiji, Xue Yan, Dong Zhongsheng, Tan Cheng, Ji Lanqin, Ma Yanli. Determination of Fluorescent Brightener Shade and Brightening Intensity Plastic coloring method

1 Scope

This standard specifies the method for determining the shade and whitening intensity of fluorescent whitening agents. This standard is applicable to the determination of the shade and whitening intensity of fluorescent whitening agents by the plastic coloring method.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 2374-2017 Regulations of general conditions for dye dyeing determination GB/T 9338-2008 Fluorescent whitening agent relative whiteness determination instrument method

3 Principle

Prepare the resin whitening board under the same conditions with the fluorescent whitening agent sample and the standard sample of the same species. Then take the standard sample swatch The color intensity is 100 points, and the color light is the standard. Visual comparison is performed to evaluate the color light and intensity of the sample color plate. Or use a colorimeter to measure color, then Then calculate the shade and whitening intensity of the sample color plate.

4 materials

Special polyvinyl chloride resin (PVC) plastic particles. the whiteness of the blank pressing board is not less than 50, no fluorescence, and stored under dry and ventilated conditions The period does not exceed three years.

5 Equipment

5.1 Screw injection molding machine and flat mold for laboratory use. 5.2 Analytical balance with an accuracy of 0.0001g. 5.3 Whiteness meter or colorimeter. Comply with the relevant regulations in Chapter 4 of GB/T 9338-2008.

6 Test procedure

6.1 Determination of fluorescent whitening agent standard The fluorescent whitening agent standard product is the reference product used to determine the whitening intensity and shade, which is determined by the supplier and the buyer through negotiation and sealed together. 6.2 Determination of general conditions Fluorescent brightener dosage. generally 0.01%~0.2% of the resin dosage, and the specific depth is stipulated in the product standard of each fluorescent brightener. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 39307-2020_English be delivered?

Answer: Upon your order, we will start to translate GB/T 39307-2020_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 39307-2020_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 39307-2020_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.