DS/EN ISO 638-2:2021

Papir, pap, papirmasse og celluloseholdige nanomaterialer – Bestemmelse af tørstofindhold ved ovntørringsmetode – Del 2: Suspension af celluloseholdige nanomaterialer


Status:
Gældende
Type:
Standard
Sprog:
Engelsk
Pris fra:
kr. 423,00

Beskrivelse

This document specifies an oven-drying method for the determination of the dry matter content
in suspensions of cellulosic nanomaterials. The procedure is applicable to cellulosic nanomaterial
suspensions which do not contain any appreciable quantities of materials other than water that are
volatile at the temperature of 105 °C ± 2 °C. It is used, for example, in the case of cellulosic nanomaterial
suspensions samples taken for chemical and physical tests in the laboratory, when a concurrent
determination of dry matter content is required.
NOTE 1 – ISO 638-1 [1] specifies the total dry matter content of paper, board, paper and board for recycling
and cellulosic nanomaterials in solid form; ISO 287 [2] specifies the determination of moisture content of a lot of
paper and board; ISO 4119 [3] specifies the determination of stock concentration of aqueous pulp suspensions;
ISO 801 (all parts) [4] specifies the determination of saleable mass in lots.
NOTE 2 – This document determines the total dry matter content of the sample, including any dissolved solids.
If only the cellulosic material content free of dissolved solids is desired, dissolved solids should be removed prior
to measuring the dry matter content e.g. by washing or dialysis, taking care to retain all cellulosic material.


Antal sider: 22

Udgivet: 2021-05-26

Godkendelsesdato: 2021-05-25

Internationale relationer : EN ISO 638-2:2021 IDT ISO 638-2:2021 IDT

ICS: 85.040 - Papirmasse 85.060 - Papir og pap

Varenummer: M343848


Udvalg og komiteer

Komite

  • CEN/TC 172
  • ISO/TC 6
  • ISO/TC 6/WG 13

Dansk udvalg

DS/V-001