Driers for paints and varnishes (ISO 4619:2018)

This document establishes a unified methodology for determining the drying rate of paint and varnish systems using a specific catalyst. The procedure outlined within the text provides clear guidelines for preparing test specimens and measuring the time required for a coating film to reach a state of dryness under controlled conditions. By defining precise parameters for the drying process, the text ensures that results obtained from different laboratories remain comparable and consistent. It covers the necessary equipment requirements, the specific steps for applying the coating to a test surface, and the criteria for evaluating the drying stages. The methodology is designed to support quality control in the manufacturing of paints and varnishes, allowing producers to verify that their products meet the required performance specifications for drying time. This approach facilitates international trade by harmonizing testing methods across different regions, ensuring that products labeled as drying within a certain timeframe are evaluated using the same rigorous standard procedure.