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.

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.

The international standard ISO 787-10 was developed by the Technical Committee ISO/TC 35, Mga Pintura at Varnishes, Sub-Committee SC 2, Pigments and fillers.

ISO 787-10-1993 – Pangkalahatang pamamaraan ng pagsubok para sa mga pigments at fillers – Bahagi 10: Pagpapasiya ng densidad – Pygravimetric method

Ang ikalawang edisyon ay kinakansela at pinalitan ang teknikal na binagong unang edisyon (ISO 787-10:1981). The second edition includes two methods instead of three, which use the same general principles but are slightly different on the devices used. Method B is more convenient for lower density pigments. Method C was given in the first edition and has been omitted in the second edition.

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

– 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

ISO 787-10-1993 – Pangkalahatang pamamaraan ng pagsubok para sa mga pigments at fillers – Bahagi 10: Pagpapasiya ng densidad – Pygravimetric method

– 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 residues on screens – mechanical flushing procedure

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

– Bahagi 20: Comparison of dispersability (oscillatory oscillation method)

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

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

ISO 787-10-1993 – Pangkalahatang pamamaraan ng pagsubok para sa mga pigments at fillers – Bahagi 10: Pagpapasiya ng densidad – Pygravimetric method

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

– 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 colour intensity and residual colour difference at reduction – colorimetric method

More parts are planned. Parts 6 at 12 have been withdrawn. Parts 13, 14, at 17 are printed together in the same document.

ISO 787-10-1993 – Pangkalahatang pamamaraan ng pagsubok para sa mga pigments at fillers – Bahagi 10: Pagpapasiya ng densidad – Pygravimetric method

1 Saklaw
Ang bahaging ito ng ISO 787 specifies a general test method for determining the density of a pigment or filler sample using a specific gravity bottle.

ISO 787-23:1979, Pangkalahatang pamamaraan ng pagsubok para sa mga pigments at fillers – Bahagi 23: Pagpapasiya ng densidad (removal of entrapped air by centrifuge) specifies a general method for the removal of trapped air by centrifuge.

Tala 1 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. A different density determination method is specified only if the general method is not applicable to a particular material.

ISO 787-10-1993 – Pangkalahatang pamamaraan ng pagsubok para sa mga pigments at fillers – Bahagi 10: Pagpapasiya ng densidad – Pygravimetric method

2 Mga reperensyang normatibo
The following standard contains provisions that, by reference herein, constitute the provisions of this part of ISO 787. At the time of publication, the version shown is valid. All standards are subject to revision and parties to agreements based on this part of ISO 787 are encouraged to investigate the possibility of applying new versions of the following standards. IEC and ISO members maintain a register of currently valid international standards.

ISO 565:1990, test sieve. Wire cloth, perforated metal plate and electroforming plate. The nominal size of the opening.

ISO 842:1984, raw materyales para sa paints at varnishes – 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.