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GB/T 6691-2007 English PDF

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Q: Should I purchase the latest version GB/T 6691-2007?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 6691-2007 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$139.00 · In stock
Delivery: <= 2 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 6691-2007: Resin finishing agent -- Determination of refractive index
Status: Valid

GB/T 6691: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 6691-2007	139	Add to Cart	2 days	Resin finishing agent -- Determination of refractive index	Valid
GB/T 6691-1986	199	Add to Cart	2 days	Resin finishing agent--Testing methods for refractive index	Obsolete

Similar standards

GB/T 23978 GB/T 24164 GB/T 2374 GB/T 2391 GB/T 6693 GB/T 6688

Basic data

Standard ID: GB/T 6691-2007 (GB/T6691-2007)
Description (Translated English): Resin finishing agent -- Determination of refractive index
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G55
Classification of International Standard: 71.100.01; 87.060.10
Word Count Estimation: 5,545
Date of Issue: 2007-11-28
Date of Implementation: 2008-06-01
Older Standard (superseded by this standard): GB/T 6691-1986
Regulation (derived from): China National Standard Approval Announcement2007 No.12 (Total No.112)
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 method for measuring the refractive index of the resin finishing agent. This standard applies to the determination of the refractive index in the resin finishing agent.

GB/T 6691-2007: Resin finishing agent -- 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.
Resin finishing agent. Determination of refractive index ICS 71.100.01; 87.060.10 G55 National Standards of People's Republic of China Replacing GB/T 6691-1986 Determination of resin finishing agent refractive index Posted 2007-11-28 2008-06-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard replaces GB/T 6691-1986 "Determination of the refractive index of the resin finishing agent." This standard and GB/T 6691-1986 compared to the main changes are as follows. --- Name specification standard "measurement of the refractive index of the resin finishing agent"; --- Increasing the content of the test report (Chapter 5 of this edition). The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee Dye (SAC/TC134) centralized. This standard was drafted. Shenyang Chemical Research Institute. The main drafters of this standard. Kiran Qin, Shen Jiong day. This standard was first published in 1986. Determination of resin finishing agent refractive index

1 Scope

This standard specifies the method for measuring the refractive index of the resin finishing agent. This standard applies to the determination of the refractive index in the resin finishing agent. Principle 2 Shows, the refractive index can be used like formula (1). (1) Isotropic pure substance, in a certain wavelength of light, temperature, pressure, and its refractive index is an inherent constant of the substance. A refractive index Like sodium D line spectrum, measured at a temperature of 20 ℃ when the air value, represented by state 20D. (2) Resin finishing agent is an aqueous solution of the resin at the beginning abbreviated form, having a refractive index higher than that of water, to increase the value of its non-volatile components contained in the share Proportional to the mass, the refractive index of the standard curve from each resin finishing agent, the sample can be determined that the mass fraction of non-volatile components.

3 instruments and equipment

a) Abbe refractometer; b) water bath. accurate to 0.1 ℃. Test Method 4 Refractometer advance correction water before use, 20 ℃ when the refractive index of water is 1.3330. Refractometer placed in a well-lit location, connected to the water bath, the refractometer prism temperature was adjusted to 20 ℃, separated ribs on both sides Mirror, a few drops of the sample injection, immediately closed prism. In this case the sample and prism maintained for several minutes at 20 ℃. Knob to adjust the field of view prism divided Light and shade in two parts, compensation knob rotation, and eliminate iridescent clear dividing line between light and dark, light and dark boundary line continues adjusting knob to align the cross Crossing point. After recording the ruler scale readings, the readings should be read in the fourth decimal place (the last for the estimates). Turns from side And then the other side will be aligned on the boundary cross point to observe and record the readings repeated three times, the difference between the readings shall not exceed 0.0003. Take three readings of the arithmetic mean of the refractive index of the sample.

5 Test Report

The test report includes the following. a) the name of the measured resin finishing agent; b) number of this standard; c) Test conditions; Name d) the use of the instrument, model; e) test results; ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 6691-2007_English be delivered?

Answer: Upon your order, we will start to translate GB/T 6691-2007_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 2 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 6691-2007_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 6691-2007_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 6691-2007?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 6691-2007 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.