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Database: 365,228(8 Aug 2026)
paper board electrical conductivity determination method aqueous extracts scopethis standard paper clinical molecular pathology cattle carcasses security assertion markup ianguage
GB/T 7977-2007 in English

GB/T 7977-2007 in English

VALID

Paper board and pulps—Determination of conductivity of aqueous extracts

  • Issued on:2007-12-05
  • Implemented on:2008-09-01
  • File Format:PDF
  • Delivery:Via email within 1~3 business days
Price(USD): $180.00
$175.00
Standard No: GB/T 7977-2007
Document status: VALID
Superseded by: GB/T 7977-2026 Paper, board and pulps—Determination of conductivity of aqueous extracts
Superseded on: 2026-12-01
Title in English: Paper board and pulps—Determination of conductivity of aqueous extracts
Title in Chinese: 纸、纸板和纸浆水抽提液电导率的测定
Language: English
File Format: Electronic (PDF)
Delivery: Via email within 1~3 business days
Issued on: 2007-12-05
Implemented on: 2008-09-01
Superseding: GB 7976-1987 Insulating paper and board-Determination of the electrical conductivity for the water extract
GB 7977-1987 Paper board and pulps-Determination of the electrical conductivity for the water extract
Chinese Classification: Y30-Papermaking in general
Professional Classification: GB-National Standard
Related Keywords: paper board
electrical conductivity
determination method
aqueous extracts scopethis standard
paper
Related Topics: Conductivity
Extract
conductance
Conductivity is not
Conductivity value
water conductivity
paper efficiency
extract
water conductivity
With a conductivity meter
Conductivity fluid
Measurement of liquid conductivity
water extraction
paper lifter
Paper, Board & Pulp
Liquid extraction
conductivity of paper
pulp water paper
Conductivity determination
Conductivity applicable
Conductivity determination
Conductivity fluid
Conductivity + liquid
Conductivity positive solution
Pulp potentiometer
Water Conductivity Test
GBT7977
GB/T 7977-1987
GB/T 7977-2007
pulp
Japanese paper
Spot check the proportion of water slurry
The role of DNA extraction solution
The conductivity of culture medium water
Method for measuring conductivity of biogas slurry
Wastewater conductivity measurement
Conductivity standard liquid electronic preparation
Sewage conductivity test
river water conductivity
Injection water conductivity
Conductivity of water for injection
Conductivity Standard
Standard method for determination of electrical conductivity
Liquid conductivity test

本标准规定了纸、纸板和纸浆水抽提液电导率的测定方法。
本标准适用于包括电气用绝缘纸和纸板在内的各种纸、纸板和纸浆。 本标准修改采用ISO 6587:1992《纸、纸板和纸浆 水抽提液电导率的测定》(英文版)。
本标准代替GB/T7976-1987《绝缘纸和纸板 水抽提液电导率的测定》、GB/T7977-1987《纸浆、纸和纸板 水抽提液电导率的测定》。
本标准与GB/T7976-1987和GB/T7977-1987相比主要变化如下:
---增加了前言;
---修改了范围,明确本标准适用于包括电气用的绝缘纸和纸板的测定(1987版的第1章,本版的第1章);
---增加了规范性引用文件(本版的第2章);
---增加了原理(本版的第3章);
---修改了试剂的要求(1987版的第3章,本版的第4章);
---修改了仪器的要求(1987版的第2章,本版的第5章);
---将试验步骤与结果计算分成两章,修改了试验步骤,增加了绝缘纸和纸板水抽提液的测定方法,方法二增加了冷抽提法、加热板法,修改了结果的表示(1987 版的第6 章,本版的第7、8章);
---增加了质量保证与控制(本版的第9章);
---增加了试验报告(本版的第10章);
---修改了电导率的表示单位(1987版的第2、3、6章,本版的第4、5、8、10章);
---增加了附录A(资料性附录)本标准与ISO6587:1992章条编号对照;
---增加了附录B(资料性附录)本标准与ISO6587:1992的技术性差异及其原因。


Scope

This standard specifies the determination method of electrical conductivity of paper, cardboard and pulp water extract. This standard applies to all kinds of paper, paperboard and pulp including insulating paper and paperboard for electrical purposes.

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