panimula
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. ISO ay gumagana nang malapit sa International Electrotechnical Commission (IEC) sa lahat ng bagay ng electrical standardization.

International pamantayan ay drafted alinsunod sa mga patakaran na ibinigay sa Bahagi 3 ng Direktiba ng ISO / IEC.

Ang draft international standard na pinagtibay ng Technical Committee ay ipapakalat sa mga miyembro ng mga katawan para sa pagboto. Ang paglalathala bilang isang internasyonal na pamantayan ay nangangailangan ng pag apruba ng hindi bababa sa 75% ng mga miyembrong institusyon.

ISO 787-3-2000 Pangkalahatang pamamaraan ng pagsubok para sa mga pigments at fillers – Bahagi 3: Determination of water-soluble substances – Hot extraction method

Please note that some elements of this part of ISO 787 May be the subject of patent rights. Ang ISO ay hindi mananagot para sa pagtukoy ng anuman o lahat ng naturang patente.

The international standard ISO 787-3 was developed by the Technical Committee ISO/TC 35, Mga Pintura at Varnishes, Sub-Committee SC 2, Pigments and fillers.

Ang ikalawang edisyon ay kinakansela at pinalitan ang teknikal na binagong unang edisyon (ISO 787-3:1979).

ISO 787 consists of the following sections, entitled General Test Methods for pigments and fillers:

– Bahagi 1: Paghahambing ng mga kulay ng pigment

– Bahagi 2: Determination of volatile substances at 105°C

– Bahagi 3: Determination of water-soluble substances – hot extraction method

– Bahagi 4: Determination of acidity or alkalinity of water extracts

ISO 787-3-2000 Pangkalahatang pamamaraan ng pagsubok para sa mga pigments at fillers – Bahagi 3: Determination of water-soluble substances – Hot extraction method

– Bahagi 5: Pagpapasiya ng pagsipsip ng langis halaga

– Bahagi 7: Determination of residue on screens – paraan ng tubig – Manual procedure

– Bahagi 8: Determination of water-soluble substances – Cold extraction method

– Bahagi 9: Determination of pH of water suspensions

– Bahagi 10: Pagpapasiya ng densidad – Tiyak na paraan ng bote ng gravity

– Bahagi 11: Determination of compaction volume and apparent density after compaction

– Bahagi 13: Determination of water-soluble sulfates, chlorides and nitrates

– Bahagi 14: Determination of the resistivity of water extracts

– Bahagi 15: Comparison of light resistance of similar types of colored pigments

– Bahagi 16: Determination of the relative tint force (or equivalent tint value) and color of coloured pigments during reduction – Visual comparison method

– Bahagi 17: Comparison of lightning power of white pigments

– Bahagi 18: Determination of sieve residue – Mechanical flushing procedure

– Bahagi 19: Determination of water-soluble nitrates (salicylic acid method)

– Bahagi 21: Comparing the thermal stability of pigments using baking media

– Bahagi 22: Comparison of the resistance of pigments to infiltration

– Bahagi 23: Pagpapasiya ng densidad (removal of ensnared air by centrifuge)

ISO 787-3-2000 Pangkalahatang pamamaraan ng pagsubok para sa mga pigments at fillers – Bahagi 3: Determination of water-soluble substances – Hot extraction method

– Bahagi 24: Determination of the relative coloring power of colored pigments and the relative scattering power of white pigments – photometric method

– Bahagi 25: Color comparison of white, black and colored pigments in full color systems – colorimetric method

– Bahagi 26: Determination of relative coloring strength and residual color difference of colorants – Weighted K/S value method

1 Saklaw
Ang bahaging ito ng ISO 787 specifies a common test method for determining the mass percentage of substances soluble in boiling water, pigment samples, or filler samples.

ISO 787-8 specifies a method for determining the mass percentage of substances soluble in water by cold extraction. For most pigments and fillers, the two test methods will give different results, so it needs to be clearly stated in the instruction manual which method will be used, and clearly stated in the test report which method was used.

Note that the general methods given in the various parts of ISO 787 are generally applicable to any pigment or filler. Kaya nga, it is only necessary to include a cross-reference to the appropriate part of ISO 787 in the international standard, giving the specification for that pigment or filler and indicating any detailed modifications that may be required in view of the particular properties of the material in question. Different methods for the determination of water-soluble substances are specified only when the general method is not applicable to a particular material.

ISO 787-3-2000 Pangkalahatang pamamaraan ng pagsubok para sa mga pigments at fillers – Bahagi 3: Determination of water-soluble substances – Hot extraction method

2 Mga reperensyang normatibo
The following normative documents contain provisions that, by reference herein, constitute the provisions of this part of ISO 787. Para sa mga petsang sanggunian, any subsequent revisions or amendments to these publications will not apply. Gayunpaman, Parties to agreements based on this part of ISO 787 are encouraged to investigate the possibility of applying new versions of the following normative documents. Para sa mga walang petsang sanggunian, a new version of the standard-setting document referred to applies. ISO and IEC members maintain a register of currently valid international standards.

ISO 787-4:1981, Pangkalahatang pamamaraan ng pagsubok para sa mga pigments at fillers – Bahagi 4: Determination of acidity or alkalinity of water extracts.

ISO 787-8:2000, Common test methods for pigments and fillers. Bahagi 8: Determination of substances soluble in water. Cold extraction.

ISO 1042:1998, Mga kagamitan sa laboratoryo ng salamin. Single label volumetric bottle.

ISO 15528:2000, Mga Pintura, mga barnis at hilaw na materyales para sa mga pintura at barnis – Pag sampling.

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