предговор
ИСО (Међународна организација за стандардизацију) је глобална федерација националних тела за стандардизацију (Тела чланица ИСО). Развој међународних стандарда се обично спроводи преко ИСО техничких комитета. Each member group interested in a subject on which a technical committee has been established has the right to be represented on the Committee. International, governmental and non-governmental organizations in liaison with ISO are also involved in this work. ИСО блиско сарађује са Међународном електротехничком комисијом (ИЕЦ) о свим питањима електричне стандардизације.

Парт 1 of the ISO/IEC Directive describes the procedures used to develop this document and for further maintenance. Нарочито, обратите пажњу на различите стандарде одобрења који су потребни за различите типове ИСО докумената. This document has been drafted in accordance with the editorial rules in Part 2 ИСО/ИЕЦ директиве (види исо.орг/дирецтивес).

Имајте на уму да неки елементи овог документа могу бити предмет патентних права. ИСО није одговоран за идентификацију било ког или свих таквих патената. Details of any patent rights identified during the documentation development process will be included in the introduction and/or list of ISO patent claims received (see iso.org/patents).

Any trade names used in this document are information provided for the convenience of the user and do not constitute an endorsement.

Explanations of the relevant standards of voluntary, ISO specific terms related to conformity assessment and the expression of meaning, and the ISO in the technical barriers to trade (ТБТ) adhere to the principle of the world trade organization (WTO) information, please refer to the iso.org/iso/foreword.html.

This document has been prepared by the ISO/TC 6 Technical Committee on Paper, Board and Pulp.

The second edition cancelled and replaced the first edition (ИСО 5647:1990), which constituted a minor revision. The changes from the previous edition are as follows:

— Clause 4: Added the option to use inductively coupled plasma/Atomic emission spectrometry (ICP/AES).

Any feedback or questions on this document should be referred to the user’s national standards body. A complete list of these institutions can be found at iso.org/members.html.

Warnings The methods specified in this document involve the use of certain hazardous chemicals and gases that can form explosive mixtures with air. Care should be taken to ensure that relevant safety precautions are followed.

Папир и картон – Determination of titanium dioxide content – ИСО 5647-2019

1 Обим примене
This document specifies a method for determining titanium dioxide content in various types of paper and board, especially coated or filled products. It consists of two procedures for the final determination of titanium, one by spectrophotometry and the other by flame atomic absorption spectrophotometry. The determination limit depends on the sample size (8.1).

Белешка: This method is designed for the determination of titanium dioxide. Titanium in other forms, such as as a component of clay, does not interfere with the determination.

2 Normative reference files
When the following documents are referenced in the context, part or all of them constitute the requirements of this document. За датиране референце, citation-only versions apply. За цитате без датума, нову верзију наведеног документа (including any amendments) примењује.

ИСО 186, Папир и картон – Sampling to determine average quality

ИСО 287 Папир и картон – Determination of batch moisture content – Drying method

– ИСО 2144, папир, board, pulp and cellulose nanomaterials – Determination of burning residues (ash content) at 900 °C

3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.

3.1Titanium dioxide content

The titanium dioxide content of paper or board (expressed on a drying basis) shall be determined after ashing the sample and dissolving the ash in the method specified in this document

Јаван је само одељак са стандардним информацијама. Да бисте видели цео садржај, морате купити стандард преко званичних канала.