GB/T 1914-2017Chemical analytical filter paper (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard replaces GB/T 1914-2007 "chemical analysis of filter paper." This standard compared with GB/T 1914-2007, the main changes are as follows.

--- Modify the normative references;

--- Qualitative filter paper broken into long-term tensile strength;

--- Increased dry burst resistance, anti-alkaline and D65 fluorescence brightness of three technical indicators;

--- Brightness to D65 brightness, separation performance of the technical requirements to qualified;

--- Improve the water filtration time and wet bursting determination.

1 Scope

This standard specifies the chemical analysis of qualitative filter paper and quantitative filter paper terms and definitions, product classification, requirements, test methods, test rules And signs, packaging, transportation, storage.

This standard applies to qualitative analysis and quantitative analysis of filter paper.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 450 paper and cardboard samples taken and the sample vertical and horizontal, front and back determination

GB/T 451.1 Determination of paper and board dimensions and skewness

GB/T 451.2 Determination of paper and board

Determination of GB/T 454 paper burst

GB/T 462 paper, cardboard and pulp analysis of moisture samples

GB/T 742 papermaking raw materials, pulp, paper and board determination of ash content

Determination of GB/T 744 pulp alkaline resistance

GB/T 1541 Determination of dust on paper and board

Paper, board and pulp water - Determination of pH

GB/T 2828.1 Sampling procedures for sampling inspection - Part 1: Batch inspection sampling plan retrieved by acceptance quality limit (AQL)

GB/T 6682 analytical laboratory water specifications and test methods

GB/T 7974 paper, cardboard and pulp Blu-ray diffuse reflection factor D65 Determination of brightness (diffuse/vertical method, outdoor daylight conditions)

GB/T 10340 Determination of paper and cardboard filtration speed

GB/T 10739 Standard atmospheric conditions for the handling and testing of paper, board and pulp specimens

GB/T 12914 Determination of paper and board tensile strength

3 Terms and definitions

The following terms and definitions apply to this document.

4 Product categories

4.1 Chemical Analysis Filter paper in accordance with the purpose is divided into two types of qualitative filter paper and quantitative filter paper. Qualitative filter paper in accordance with the different speed of the water is divided into three