http://top-uv-lamp.com/en/tags/is/ Recent content in Is on Top UV Lamp Hugo en-us Sat, 30 May 2026 03:36:18 +0800 http://top-uv-lamp.com/en/posts/why-is-my-uv-germicidal-lamp-blue/ Sat, 30 May 2026 03:36:18 +0800 http://top-uv-lamp.com/en/posts/why-is-my-uv-germicidal-lamp-blue/ <p><img src="http://top-uv-lamp.com/images/922aaf5f9a907f1d60ed6f8e999563af.png" alt="Why is my UV germicidal lamp blue"></p> <h2 id="why-the-lamp-glows-blue">Why the Lamp Glows Blue</h2> <p>Ever looked at your UV lamp and wondered why it throws off that eerie blue light? It’s not a glitch. That blue is just a side effect of what&rsquo;s happening inside the tube. These lamps are all about generating shortwave UV light—specifically at 253.7 nanometers, which is the magic number for wiping out microorganisms. The blue glow is simply the electrical arc doing its job, exciting the mercury vapor in the quartz tube. It’s a sign the lamp is alive and kicking, not a flaw.</p>