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GB/T 6488-2022 English PDF

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Q: Should I purchase the latest version GB/T 6488-2022?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 6488-2022 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$189.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 6488-2022: Liquid chemicals - Determination of refractive index
Status: Valid

GB/T 6488: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 6488-2022	189	Add to Cart	3 days	Liquid chemicals - Determination of refractive index	Valid
GB/T 6488-2008	199	Add to Cart	2 days	Liquid chemicals -- Determination of refractive index at 20 Celsius	Obsolete
GB/T 6488-1986	199	Add to Cart	2 days	Test method for refractive index of chemical products	Obsolete

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Basic data

Standard ID: GB/T 6488-2022 (GB/T6488-2022)
Description (Translated English): Liquid chemicals - Determination of refractive index
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G04
Classification of International Standard: 71.040.50
Word Count Estimation: 10,160
Date of Issue: 2022-10-14
Date of Implementation: 2023-05-01
Older Standard (superseded by this standard): GB/T 6488-2008
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 6488-2022: Liquid chemicals - Determination of refractive index

---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.
Liquid chemicals -- Determination of refractive index ICS 71.040.50 CCSG04 National Standards of People's Republic of China Replacing GB/T 6488-2008 Determination of Refractive Index of Liquid Chemical Products Published on 2022-10-12 2023-05-01 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. This document replaces GB/T 6488-2008 "Determination of Refractive Index of Liquid Chemical Products (20°C)", and is consistent with GB/T 6488-2008 In addition to structural adjustments and editorial changes, the main technical changes are as follows. a) Changed the temperature range (see Chapter 1, Chapter 1 of the.2008 edition); b) Added the principle of automatic refractometer (see 4.2); c) Changed the requirements for Abbe refractometers (see 6.1, 5.1 of the.2008 edition); d) Changed the correction method of Abbe refractometer (see 7.1, 6.2 of the.2008 edition); e) Added automatic refractometer measurement method (see 7.2); f) Added the content of the test report (see Chapter 8). 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 Petroleum and Chemical Industry Federation. This document is under the jurisdiction of the National Chemical Standardization Technical Committee (SAC/TC63). This document was drafted by. Nanjing Guoyuan Standard Technical Service Co., Ltd., Shandong Institute of Product Quality Inspection, China Petroleum and Chemical Corporation Industry Federation, Shandong Linyi Sanfeng Chemical Co., Ltd., Shandong Huifeng Petrochemical Group Co., Ltd., Anton Paar (Shanghai) Trading Co., Ltd. Company, Haineng Future Technology Group Co., Ltd., Ningbo Zhongqin Testing Technology Co., Ltd., Fujian Yongrong Technology Co., Ltd. The main drafters of this document. Zou Huiling, Xia Pandeng, Qiu Ailing, Hao Yuan, Bai Yahao, Liu Mingzhen, Li Haitao, Li Haiyang, Cheng Zhanghong, Wang Zhigang, Zhang Zhenfang, Chen Jin, Yang Lixin, Ye Jiamei, Yuan Gengqing, Liu Hongyan. This document was first published in 1986, revised for the first time in.2008, and this is the second revision. Determination of Refractive Index of Liquid Chemical Products

1 Scope

This document describes a method for determining the refractive index of liquid chemical products using an Abbe refractometer and an automatic refractometer. This document is suitable for liquefaction of transparent or translucent, temperature range of 20℃~60℃, refractive index range of 1.3000~1.7000 Determination of industrial products.

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 JJG130 Working glass liquid thermometer JJG625 Abbe Refractometer JJG2003 Thermocouple

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 Refractive index Under the condition of the D line of the sodium spectrum, the ratio of the speed of light in the air to the speed of light in the object to be measured or the input of light when it passes through the object to be measured from the air. The ratio of the sine of the incident angle to the sine of the refraction angle.

4 Principles

4.1 Abbe's refractometer The light from the measured material enters the prism and is refracted, then it conforms to the formula (1) of the law of refraction. sini sinr= (1) where. i ---incidence angle; r --- refraction angle; N --- the refractive index of the prism; n ---Refractive index of the measured substance. From the optically sparser medium to the optically denser medium, the incident angle is greater than the refraction angle, so that the incident angle i=90°, and substituting into formula (1), we get. sinr= n=N sinr (2) ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 6488-2022_English be delivered?

Answer: Upon your order, we will start to translate GB/T 6488-2022_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 6488-2022_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 6488-2022_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.

Question 5: Should I purchase the latest version GB/T 6488-2022?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 6488-2022 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.