GB/T 6948-1998 in English

SUPERSEDED

Microscopical determination of the reflectance of vitrinite in coal

Issued on:1998-12-08
Implemented on:1999-05-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $220.00
$214.00

Standard No:	GB/T 6948-1998
Document status:	SUPERSEDED
Superseded by:	GB/T 6948-2008 Method of determining microscopically the reflectance of vitrinite in coal
Superseded on:	2009-03-01
Title in English:	Microscopical determination of the reflectance of vitrinite in coal
Title in Chinese:	煤的镜质体反射率显微镜测定方法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	1998-12-08
Implemented on:	1999-05-01
ICS Classification:	73.040-Coals
Chinese Classification:	D26-Coal petrography
Professional Classification:	GB-National Standard
Related Keywords:	maximum reflectance random reflectance coal scopethis standard pulverized coal bituminous coal
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Microscope lighting methods Oil-in-water microscopy staining method Vitrinite reflectance detection General methods of using a microscope How to use a microscope to detect asbestos? 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《GB/T 6948-1998煤的镜质体反射率显微镜测定方法》由TC42（全国煤炭标准化技术委员会）归口，主管部门为中国煤炭工业协会。
本标准规定了在显微镜油浸物镜下测定粉煤光片的镜质体最大反射率和随机反射率的方法。适用于褐煤、烟煤和无烟煤之单煤层煤的反射率测定。本方法要求操作者鉴别镜质体。通过自动化显微镜分析由计算机解译镜质体反射率测值的方法，不属于本标准的规定范围。

Scope

This standard specifies the method for measuring the maximum reflectance and random reflectance of vitrinite of pulverized coal optical sheet under the microscope oil immersion objective lens. It is suitable for the measurement of reflectance of single seam coal of lignite, bituminous coal and anthracite.

More samples: JC/T 2453-2018 QC/T 942-2021 NB/T 47013.2-2015

Sample only — not a preview of GB/T 6948-1998

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