ISO 6713-1984 “Preparation of lacquer acid extracts in liquid form or powder formfor paints and varnishes

Een voorwoord
ISO (Internationale Organisatie voor Standaardisatie) is een mondiale alliantie van nationale normalisatie-instellingen (ISO-lidorganisaties). De ontwikkeling van internationale normen wordt doorgaans uitgevoerd via technische ISO-commissies. Elke aangesloten instelling die geïnteresseerd is in een onderwerp waarover een technische commissie is opgericht, heeft het recht om in de commissie vertegenwoordigd te zijn. Gouvernementele en niet-gouvernementele internationale organisaties die contact onderhouden met standaardisatieorganisaties zijn ook bij dit werk betrokken.

Draft international standards adopted by technical committees are circulated to member bodies for approval before they are accepted as international standards by the ISO Council. They are approved according to ISO procedures that require at least 75% approval by voting member institutions.

De internationale standaard ISO 6713 was developed by the Technical committee ISO/TC 35 (Verven en vernissen).

ISO 6713 was first published in 1980. De tweede editie werd geannuleerd en vervangen door de eerste editie, which constituted a technical revision.

ISO 6713-1984 “Preparation of lacquer acid extracts in liquid form or powder formfor paints and varnishes

Scope and field of application
This standard describes the preparation of acid extracts as test solutions for the determination of the “oplosbaar” metal content of paints and related products in liquid or powder form.

Acid extracts were prepared in 0,07 mol/l hydrochloric acid, which was chosen as an approximation of the acid in the stomach.

This standard does not apply to dried or crushed paint films (zie ISO 6714).

WarningThe procedures described in this standard are complex and should therefore be performed by personnel with appropriate experience in these analytical procedures. Sufficient accuracy can only be obtained if all details of the separation and extraction procedures are strictly followed.

2 Reference Materials
ISO 1042, Laboratorium glaswerk — Single-labeled volumetric flasks.

ISO 1512, Verven en vernissen — Bemonstering.

ISO 1513, Verven en vernissen — Onderzoek en voorbereiding van proefmonsters.

ISO 3696, laboratory water use — Specificatie. 1)

ISO 3856, Verven en vernissen – Bepaling van “oplosbaar” metalen inhoud.

ISO 6714, Paints and varnishes-Preparation of acid extracts from dry films.

ISO 6713-1984 “Preparation of lacquer acid extracts in liquid form or powder formfor paints and varnishes

3 Definitions
For the purposes of this Standard, de volgende definities zijn van toepassing.

3.1 Pigmenten

All particulate matter was insoluble in the selected extraction solvent (6.2).

3.2 “Solublemetal content of liquid coatings

The metal content of the pigment soluble in a specified dilute acid plus the total metal content present in the liquid part of the paint.

Opmerking 1: The dilute acid defined in this standard is 0.07mol/l hydrochloric acid.

3.3 “Solublemetal content of paint in powder form

Metal content of paints soluble in specified dilute acids (zie toelichting 3.2).

Alleen de standaardinformatiecomponent is openbaar beschikbaar. Om de volledige inhoud te zien, u zult de normen via formele kanalen moeten aanschaffen.

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