abstraction

The code specifies requirements for the composition, mga katangiang pisikal, performance and labeling of artists’ watercolor pigments. Light resistance determination, exposure testing and average color difference calculation should be performed to meet the specified requirements.

This summary is a brief overview of the reference standards. It is for reference only and is not an official part of the standard; Reference is required to the full text of the standard itself for its use and application. ASTM makes no warranties of any kind, ipahayag o ipinahiwatig, at hindi kumakatawan na tumpak ang nilalaman ng abstrak na ito, complete or new.

ASTM D5067-16 Standard Specification for Artists’ Watercolor Pigments

Kahulugan at paggamit

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 D5067-16 Standard Specification for Artists’ Watercolor Pigments

Hakbang 1: Saklaw

1.1 This specification specifies the composition, mga katangiang pisikal, performance and labeling requirements of artists’ watercolor pigments.

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

1.3 Talahanayan 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 Ang mga pagpapahalagang ipinahayag sa mga yunit ng SI ay dapat ituring bilang mga pamantayang pagpapahalaga. Ang mga halaga na ibinigay sa mga panaklong ay para sa sanggunian lamang.