Amendment 4 - High-pressure mercury vapour lamps

This document serves as a technical amendment to the foundational specification regarding high-pressure mercury vapour lamps. It establishes specific modifications and updates to the original requirements, ensuring the continued relevance and safety of the equipment in evolving applications. The content addresses particular technical parameters and performance criteria that needed adjustment following the initial publication of the parent standard. By providing these clarifications, the text facilitates consistent manufacturing practices and testing methodologies across international markets. It focuses on refining the design and operational aspects of the lamps without altering the core structure of the primary document. The amendment aims to harmonize the technical details with advancements in technology and safety knowledge existing at the time of its release. All technical provisions contained within are intended for direct application by manufacturers, testing laboratories, and regulatory bodies involved in the lamp industry. This update ensures that the specifications remain aligned with contemporary industrial needs and regulatory expectations.