ASTM International

Standard Practice for Evaluating Touch-Up Properties of Architectural Coatings under Various Environmental Conditions
 N D7489

Annotation

This practice determines the ability of a paint to be recoated or "touched up" in small areas. Variations in color, gloss, and sheen that result in a different appearance from the original paint can be evaluated visually.

This practice describes evaluation of touch-up characteristics in a laboratory-scale controlled environment as opposed to a full-scale field environment.

Evaluation of touch-up properties under constant drying conditions is described. Environmental conditions can be adjusted to incorporate high or low temperature drying , or both. The changes in application temperature can lead to larger differences in touch-up than applying both coats under the same environmental conditions.

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Автоматический перевод:

Общепринятая практика для оценки свойств подкраски фасадных красок под различными условиями окружающей среды

Эта практика определяет способность краски, которая будет повторно покрыта или "исправлена" в небольших районах. Изменения в цвете, блеск и блеск, которые приводят к различному появлению из оригинальной краски, могут быть оценены визуально.