GB/T 7896-2008 English PDF

US$209.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 7896-2008: Test method for optical grade synthetic quartz crystal
Status: Valid

GB/T 7896: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 7896-2008	209	Add to Cart	3 days	Test method for optical grade synthetic quartz crystal	Valid
GB/T 7896-1987	239	Add to Cart	2 days	Testing method for optical--Grade synthetic quartz crystal	Obsolete

Similar standards

GB/T 5483   JC/T 2625   GB/T 15344   GB/T 42257   GB/T 39820   GB/T 7895   

Basic data

Standard ID: GB/T 7896-2008 (GB/T7896-2008)
Description (Translated English): Test method for optical grade synthetic quartz crystal
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Q65
Classification of International Standard: 73.080
Word Count Estimation: 9,912
Date of Issue: 2008-06-30
Date of Implementation: 2009-04-01
Older Standard (superseded by this standard): GB/T 7896-1987
Quoted Standard: GB/T 7895-2008
Regulation (derived from): National Standard Approval Announcement 2008 No.11 (Total No.124)
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 test methods of artificial optical crystal. This standard applies to performance testing of artificial optical crystal.

GB/T 7896-2008: Test method for optical grade synthetic quartz crystal

---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 for optical grade synthetic quartz crystal ICS 73.080 Q65 National Standards of People's Republic of China Replacing GB/T 7896-1987 Test methods for artificial optical crystal Posted 2008-06-30 2009-04-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard replaces 7896-1987 "artificial optical crystal test method" GB/T . The standards are compared with the GB/T 7896-1987 the following major changes. --- To increase the "scope 1"; --- Added "2 Normative references"; --- Added "3 artificial optical crystal size, orientation, and rotation"; --- Increased "four pairs of crystal"; --- Added "5 crack"; --- Added "9 stripes"; --- Remove the "sample taken" (Chapter 1 of the original standard); --- Modification of the "Standard Test Method for inclusions" (the original standard in Chapter 2, Section 6 of this standard); --- Modify the "optical homogeneity test methods" (the original standard Chapter 4, Chapter 8 of this standard); --- Modify the original standard term "spectral transmittance" as "spectral transmittance." This standard is proposed and managed by China Building Materials Federation. This standard was drafted. Shimmering Special Crystal Technology Co., Ltd. Zhejiang Quartz Crystal Optoelectronic Technology Co., Ltd. The main drafters of this section. Wang Xiaogang, Huatai Chen, Yin Lijun, Sun Zhiwen, Zhang Shaofeng, Chuan Xu, Sheng Yongjiang. This standard was first published in 1987. Test methods for artificial optical crystal

1 Scope

This standard specifies the test method for optical synthetic quartz crystal. This standard applies to optical performance test artificial quartz crystal.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard. However, according to research encourages the parties to the agreement Study whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 7895-2008 artificial optical crystal 3 artificial optical crystal size, orientation, and rotation 3.1 Artificial optical crystal and the seed crystal size Use accuracy of 0.02mm vernier caliper measurement of each dimension of artificial quartz crystal. 3.2 Artificial optical crystal orientation of the seed crystal Artificial optical crystal orientation of the seed crystal X-ray direction finder should be used for testing. 3.2.1 instruments and appliances X-ray direction finder, directional accuracy ± 30 ". 3.2.2 Test procedure Directional instrument calibration, respectively, adjusted to the appropriate counter tube angle (2θ), the corresponding standard sheet discharge to the sample stage, and adsorption using a vacuum pump, Shake the hand wheel forward or backward to find the peak, the display angle θ can be. The test sample is placed in a sample seed stage, measured three times. 3.2.3 Results Calculate the average of three measurements. 3.3 rotation 3.3.1 original crystal according to FIG. 1 rotation determination. Figure 1 optical rotation synthetic quartz crystal 3.3.2 When the crystal plane is destroyed, discrimination method shown in Table 1. Table 1 instruments discrimination crystal rotation method L-D-measuring instruments quartz crystal The cone of light polarization analyzer was contractile ring (eyepiece clockwise rotation) diverge ring (eyepiece clockwise rotation) Polariscope polariser polarizer is rotated counterclockwise rotate clockwise ......

Image     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 7896-2008_English be delivered?

Answer: Upon your order, we will start to translate GB/T 7896-2008_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 7896-2008_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 7896-2008_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 7896-2008?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 7896-2008 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.