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ISO (International Organization para sa Standardisasyon) ay isang pandaigdigang alyansa ng mga pambansang pamantayan katawan (Mga katawan ng miyembro ng ISO). Ang pagbuo ng mga internasyonal na pamantayan ay karaniwang isinasagawa sa pamamagitan ng ISO teknikal na komite. Ang bawat institusyon ng miyembro na interesado sa isang paksa kung saan itinatag ang isang teknikal na komite ay may karapatang kumatawan sa komiteng iyon. Ang mga internasyonal na organisasyon ng pamahalaan at di pamahalaan na nakikipag ugnayan sa ISO ay kasangkot din sa gawaing ito.

Draft international standards adopted by technical committees are circulated to member bodies for approval before being accepted as international standards by the ISO Council. They are approved under the ISO process, which requires at least 75 per cent approval from voting member bodies.

The international standard ISO 6503 was developed by the Technical Committee ISO/TC 35 for paints and varnishes.

1 Scope and domain of application
This standard describes a flame atomic absorption spectrometry method for the determination of total lead in paints and related products.

This method is suitable for products with total lead content in the range of approximately 0.01 sa 2% (m/m).

Tala – This method is also suitable for products with total lead content greater than 2 % (m/m), but should only be used if the accuracy does not exceed the appropriate value given in 7.2.

Two methods to deal with the test part are given. In case of dispute, the dry ash method (Clause 4) shall be used as the method of adjudication.

To determine lead in test solutions, the dithiazole spectrophotometry specified in ISO 3856/1 May be used as an alternative method.

ISO 6503-1984 “Mga pintura at barnis — Determination of total lead content — Flame atomic absorption spectrometry”

2 Mga Materyal na Sanggunian
ISO 385/1, burette for laboratory glassware – Bahagi 1: Pangkalahatang mga kinakailangan.

ISO 1042, Single label volumetric bottles for laboratory glassware.

ISO 1512, Mga pintura at barnis — Pag sampling.

ISO 1513, Mga pintura at barnis — Pagsusuri at paghahanda ng mga sample ng pagsubok.

ISO 3696, Laboratory water – Pagtutukoy.

ISO 3856/1, Mga pintura at barnis – Pagpapasiya ng “matutunaw” nilalaman ng metal – Bahagi 1: Determination of lead content – Flame atomic absorption spectrometry and dithiazole spectrophotometry.

ISO 5725, Accuracy of test methods – Determination of repeatability and reproducibility by inter-laboratory testing.

Ang standard information section lamang ang pampubliko. Upang makita ang buong nilalaman, kailangan mong bilhin ang pamantayan sa pamamagitan ng mga opisyal na channel.