Isang 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 ang isang teknikal na komite ay itinatag ay may karapatang kumatawan sa komite. Ang pamahalaan at mga di pampamahalaang internasyonal na organisasyon na nakikipag ugnayan sa mga organisasyon ng standardization ay kasangkot din sa gawaing ito. ISO ay gumagana nang malapit sa International Electrotechnical Commission (IEC) sa lahat ng bagay ng electrical standardization.

International standards are drafted according to the rules given in Part 2 ng Direktiba ng ISO / IEC.

Ang pangunahing tungkulin ng komite ng teknikal ay upang bumuo ng mga internasyonal na pamantayan. Draft international standards adopted by the Technical Committee will be circulated to member bodies for voting. Ang paglalathala bilang isang internasyonal na pamantayan ay nangangailangan ng pag apruba ng hindi bababa sa 75% ng mga miyembrong institusyon.

Mangyaring tandaan na ang ilang mga nilalaman ng dokumentong ito ay maaaring sumailalim sa mga karapatan sa patent. ISO ay hindi responsable para sa pagtukoy ng anumang o lahat ng naturang mga karapatan sa patent.

ISO 17895 was developed by Technical Committee ISO/TC 35, Mga pintura at barnis.

ISO 17895-2005 “Determination of Volatile Organic Compounds Content in Low VOC Latex Paints for Color and varnishing (tank VOC)”

Panimula
For health and environmental reasons, the requirements imposed by the authorities today include the assessment of the content of residual monomers and organic saturated volatiles, sometimes accurate to trace amounts.

This international standard is one of a series of standards dealing with the VOC content of paints, varices and related products: ISO 11890-1 (see bibliography) specifies the method for determining VOC content greater than 15% (by mass), ISO 11890-2 applies to VOC content between 0.1% at 15% (by mass).

This INTERNATIONAL standard describes a method for determining the VOC content between 0.01% at 0.1% (by mass). In contrast to ISO 11890-1 at ISO 11890-2, this standard applies to volatile organic compounds with boiling points up to 250°C.

1 Saklaw
This standard specifies a gas chromatographic method for the quantitative determination of volatile organic compound (VOC) content (i.e. the content of organic compounds with boiling points up to 250°C) in a low VOC content latex paint (tank VOC) under standard conditions (101,325 kPa). The method is suitable for VOC content ranging from 0.01% sa 0.1% (by mass).

The main purpose of this method was to identify low VOC latex paints rather than conventional quality control.

2 Mga reperensyang normatibo
The following references are required for the application of this document. Para sa mga petsang sanggunian, ang binanggit na bersyon lamang ang nalalapat. Para sa mga walang petsang sanggunian, ang bagong bersyon ng sanggunian (kasama ang anumang mga rebisyon) angkop.

ISO 2811-1, Mga pintura at barnis — Pagpapasiya ng densidad — Bahagi 1: Tiyak na paraan ng bote ng gravity

ISO 2811-2, Mga pintura at barnis — Pagpapasiya ng densidad — Bahagi 2: immersion (plunge) paraan ng

ISO 2811-3, mga pintura at barnis — Pagpapasiya ng densidad — Bahagi 3: oscillatory method

ISO 2811-4, mga pintura at barnis — Pagpapasiya ng densidad — Bahagi 4: pressure cup method

ISO 3696, analytical laboratory water use – specifications and test methods

ISO 15528, Mga Pintura, mga barnis at hilaw na materyales para sa mga pintura at barnis — Pag sampling

ISO 17895-2005 “Determination of Volatile Organic Compounds Content in Low VOC Latex Paints for Color and varnishing (tank VOC)”

3 Mga tuntunin at kahulugan
Para sa mga layunin ng dokumentong ito, Ang mga sumusunod na termino at kahulugan ay nalalapat.

3.1 Volatile Organic Compounds

Any organic liquid and/or solid that evaporates spontaneously at the prevailing temperature and pressure of the atmosphere with which it is in contact

Tala 1: For current usage of the term VOC in the field of coatings, see Volatile Organic Compound content (VOC content).

Tala 2: Under U.S. government legislation, the term VOC is limited to those compounds that are photochemically active in the atmosphere (see ASTM D 3960). Any other compounds are then defined as exempt compounds.

[Pinagmulan: ISO 4618]

3.2 Volatile organic compound content

The quality of volatile organic compounds present in the coating material, determined under the specified conditions

Tala 1: The nature and number of compounds to be considered will depend on the application area of the coating material. For each application area, limit values and determination or calculation methods are specified by regulation 1) or agreement.

[Pinagmulan: ISO 4618]

3.3 Volatile organic compounds in the tank

Volatile organic compounds present in waterborne latex paint

3.4 Latex paint

The organic adhesive is a coating of water-based dispersion

[Pinagmulan: ISO 4618]

3.5 Complete evaporation

Method of transferring VOC from liquid to gas phase in liquid sample

Tala 1: Although a headspace injector with a diaphragm sealed vial is used to introduce the test portion of the gas phase into the column, the complete evaporation method differs significantly from conventional headspace analysis where equilibrium is established. Since the sample bottle contains a very small amount of sample, almost all VOC will enter the gas phase when heated to a certain temperature [3].

ISO 17895-2005 “Determination of Volatile Organic Compounds Content in Low VOC Latex Paints for Color and varnishing (tank VOC)”

3.6 Stock solution reference compound mixture

Mixtures prepared from pure substances for use in standard addition methods

Tala 1: The concentration of the reference compound mixture in the stock solution is determined by the initial mass number of each component in the sample and its purity.

3.7 Multiple standard addition methods

Method for determining the VOC content of a mixture of reserve compounds by adding known amounts of reference compounds to a sample

Tanging ang karaniwang bahagi ng impormasyon ay magagamit sa publiko. Upang makita ang buong nilalaman, Kakailanganin mong bilhin ang mga pamantayan sa pamamagitan ng mga pormal na channel.