paunang salita
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 3856/7 was developed by the Technical Committee ISO/TC 35, Mga Pintura at Varnishes.

0 Panimula
This international standard is part of ISO 3856, Mga pintura at barnis – Pagpapasiya ng “matutunaw” nilalaman ng metal.

1 Scope and domain of application
Ang bahaging ito ng ISO 3856 describes a flameless atomic absorption spectrometry method for the determination of mercury content in test solutions, prepared in accordance with ISO 6713 or another appropriate international standard.

This method is suitable for paints with a “matutunaw” mercury content in the range of approximately 0,005 sa 0,05 % (m/m), but the part of the method that covers the liquid portion of the paint to be examined is limited to water-diluted paints.

Tala – ISO 3856 The procedures described in this section are intended to be performed by qualified chemists or other appropriately trained and/or supervised personnel. The substances and procedures used in this method may be harmful to health if proper precautions are not taken. The text draws attention to certain specific risks (tingnan sa 4.6 at 4.7). Ang bahaging ito ng ISO 3856 relates only to its technical applicability and does not exempt users from statutory obligations relating to health and safety.

ISO 3856-7-1984 Mga pintura at barnis — Pagpapasiya ng “matutunaw” nilalaman ng metal — Bahagi 7: Determination of mercury content in the pigment portion of paints and the liquid portion of water-dilutive paints — flameless atomic absorption spectrometry

2 Mga Materyal na Sanggunian
IS0 385/1, Burette for laboratory glassware – Bahagi 1: Genus/requirement. 1)

ISO 648, mga laboratory glassware – Single mark pipettes.

ISO 1042, Single label volumetric bottles for laboratory glassware.

ISO 3696, Laboratory water – Pagtutukoy. 2)

ISO 6713, Mga pintura at barnis — Paghahanda ng acid extracts mula sa mga kuwadro sa likido o pulbos form.

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