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

GB/T 21883-2016 English PDF

Q: How long will the true-PDF of English version of GB/T 21883-2016 be delivered?

Upon your order, we will start to translate GB/T 21883-2016_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 21883-2016_English with my colleagues?

Yes. The purchased PDF of GB/T 21883-2016_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.

Q: Should I purchase the latest version GB/T 21883-2016?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 21883-2016 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$119.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 21883-2016: Fluorescent whitening agents -- Determination of fluoristrength
Status: Valid

GB/T 21883: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 21883-2016	119	Add to Cart	3 days	Fluorescent whitening agents -- Determination of fluoristrength	Valid
GB/T 21883-2008	199	Add to Cart	2 days	Fluorescent whitening agents -- Determination of fluoristrength	Obsolete

Similar standards

GB/T 24166 GB/T 23978 GB/T 24164 GB/T 21875 GB/T 21876

Basic data

Standard ID: GB/T 21883-2016 (GB/T21883-2016)
Description (Translated English): Fluorescent whitening agents -- Determination of fluoristrength
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G55
Classification of International Standard: 71.100.01; 87.060.10
Word Count Estimation: 6,680
Date of Issue: 6/14/2016
Date of Implementation: 2017-01-01
Older Standard (superseded by this standard): GB/T 21883-2008
Quoted Standard: GB/T 2374-2007; GB/T 6682-2008; GB/T 8170-2008
Regulation (derived from): National Standard Announcement No. 8 of 2016
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the fluorescent brightener fluorescent intensity determination method. This standard is applicable to the determination of fluorescence intensity of fluorescent brighteners.

GB/T 21883-2016: Fluorescent whitening agents -- Determination of fluoristrength

---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 whitening agents - Determination of fluoristrength ICS 71.100.01; 87.060.10 G55 National Standards of People's Republic of China Replacing GB/T 21883-2008 Fluorescent brightener Determination of fluorescence intensity 2016-06-14 release 2017-01-01 Implementation General Administration of Quality Supervision, Inspection and Quarantine of the People 's Republic of China China National Standardization Management Committee released

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 21883-2008 "Fluorescent Brightener Fluorescence Intensity Measurement", compared with GB/T 21883-2008, in addition to Editorial changes to the main technical changes are as follows. - expands the scope of the standard (see Chapter 1, Chapter 1 of the.2008 edition); - the terms and definitions were deleted (see Chapter 4 of the.2008 edition); - modified the expression of the principle (see Chapter 3, Chapter 4 of the.2008 edition); - the addition of a standard sample (standard) (see 5.2); - modified the choice of solvent and the expression of the statement (see 5.3.1,.2008 version 6.3); - a modified statement of the concentration of the test solution has been modified (see 5.3.2, 6.2 of.2008); --- increase the maximum absorption wavelength of the determination of content (see 5.3.3); - modified the statement of the determination (see 5.4.4,.2008 version 6.4); - Increased the determination of the fluorescence intensity of water-insoluble fluorescent whitening agents (see 5.4); - increased allowances (see 5.6); --- modified the contents of the test report (see Chapter 6, Chapter 7 of the.2008 edition). This standard is proposed by the China Petroleum and Chemical Industry Association. This standard is under the jurisdiction of the National Dye Standardization Technical Committee (SAC/TC134). The drafting unit of this standard. Guangdong Demei Fine Chemical Co., Ltd., Shanxi Qingshan Chemical Co., Ltd., Shenyang Chemical Industry Research Institute limited Company, the State Dye Quality Supervision and Inspection Center. The main drafters of this standard. Guo Yuliang, Dong Zhongsheng, Gan Hongyu, Ji Lanqin, Xu Longhe, Li Gang, Wang Yong. This standard was first released in May.2008, this time for the first revision. Fluorescent brightener Determination of fluorescence intensity

1 Scope

This standard specifies the method for the determination of the fluorescence intensity of the fluorescent whitening agent. This standard is applicable to the determination of fluorescent intensity of fluorescent whitening agent.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. General conditions for determination of dye dyeing Analysis of laboratory water specifications and test methods GB/T 6682-2008 Representation and Judgment of Numerical Correction Rule and Limit Value in GB/T 8170-2008

3 principle

The fluorescent whitening agent sample and standard sample under the same conditions dubbed the appropriate concentration of the solution, with ultraviolet spectrophotometer at the maximum absorption wavelength The absorbance value of the sample is measured by the percentage of the absorbance coefficient of the sample and the absorbance coefficient of the sample.

4 instruments and equipment

The equipment and equipment used shall comply with the provisions of Chapter 4 of GB/T 2374-2007, including the following. a) spectrophotometer. UV visible spectrophotometer; b) analytical balance. accuracy 0.0001g; c) volumetric flask. 100 mL, 500 mL, 1000 mL brown volumetric flask; d) pipettes. 2 mL, 5 mL, 10 mL; e) cuvette. 10mm quartz cuvette.

5 test method

5.1 General provisions Unless otherwise specified, only the reagents identified as analytical reagents and the tertiary water specified in GB/T 6682-2008 are used. Test results According to GB/T 8170-2008 in 4.3.3 repair value comparison method. In the determination, the room should be appropriate to avoid light, to avoid sun exposure test samples. In the determination process, from the sample, dissolved, diluted to the test Should be continuous operation, should not be placed too long, in order to avoid the standard sample and sample by the light and affect the determination of the results. The ambient temperature during the operation, the solvent temperature should be maintained at (25 ± 5) ℃. ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 21883-2016_English be delivered?

Answer: Upon your order, we will start to translate GB/T 21883-2016_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 21883-2016_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 21883-2016_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.

Question 5: Should I purchase the latest version GB/T 21883-2016?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 21883-2016 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.