التجريد

The specification defines the requirements for the composition, الخصائص الفيزيائية, performance and labeling of gouache pigments. أصباغ, carriers and additives are included here, including requirements for pigment identification, light fastness and consistency. This article lists some pigments that meet the light resistance requirements in this manual. فضلاً عن ذلك, in order to identify other pigments that meet these requirements, instructions for test sample preparation and corresponding test methods for determining relative light resistance are given. Conditions that are not covered in this manual that affect gouettes are substrate, environmental conditions, تخزين, carrier, الصباغ, إضافات, inert gases, إعداد عينة, coarse particles, dispersion fineness, تناسق, استقرار التجميد والذوبان, إلخ.

هذا الملخص هو لمحة موجزة عن المعايير المرجعية. إنه للإشارة فقط وليس جزءًا رسميًا من المعيار; ويلزم الرجوع إلى النص الكامل للمعيار نفسه لاستخدامه وتطبيقه. ASTM لا تقدم أي ضمانات من أي نوع, صريحة أو ضمنية, ولا يعني أن محتوى هذا الملخص دقيق, كاملة أو جديدة.

ASTM D5724-2016 Standard Specification for Gouache Pigments

المعنى والاستخدام

4.1 This specification sets out quality requirements and provides a basis for consensus among producers, distributors and users.

4.2 Not all compliant coatings are the same in all respects, nor are they uniform. Changes in manufacturing (not covered by this specification) may cause some artists to prefer one brand over another, either of which may be accepted under this specification.

ASTM D5724-2016 Standard Specification for Gouache Pigments

خطوة 1: نِطَاق

1.1 This specification specifies the composition, الخصائص الفيزيائية, performance and labeling requirements of gouache pigments.

1.2 This specification includes pigments, carriers and additives. Including pigment recognition, light resistance and consistency requirements.

1.3 طاولة 1 lists some of the pigments that meet the light resistance requirements of this specification. In order to identify other pigments that meet these requirements, instructions for the preparation of test samples are given. Refer to test methods to determine relative light resistance.

1.4 تعتبر القيم المعبر عنها بوحدات النظام الدولي (SI) قياسية. القيم الواردة بين قوسين هي للإشارة فقط.

(أ) The color index number 77491 May be used as a substitute for 77492 of PBr 7.

(ب) For information on white pigments, see Appendix X3.