As energy efficiency demands rise in modern architecture, the quality and performance of insulating glass units (IGUs) have become a top priority. Central to their thermal insulation properties is the presence of inert gases, most commonly argon or krypton, sealed between glass panes. But how do manufacturers ensure these gas fills are accurate and long-lasting? The answer lies in a shift from traditional invasive testing methods to advanced non-invasive technologies that offer fast, reliable results without compromising the unit.
From Invasive to Non-Invasive: A Shift in Testing Technology
For years, gas chromatography (ASTM E2269-21) was the industry norm, requiring physical access to the gas inside the IGU. While accurate, it was destructive, slow, and impractical for production lines. Enter spark emission spectroscopy (SES), a breakthrough that allows for accurate, non-destructive testing as defined by ASTM E2649-20. This standard outlines how SES can be used to measure argon concentration by analysing light emitted during plasma formation within the IGU.
ASTM E2649-20 Explained
Using SES, a brief high-voltage spark is applied to the IGU surface, creating a plasma that emits light. This emission is spectrally analysed to determine gas concentration, all without breaching the unit. The test is ideal for factory environments, delivering repeatable, reliable results in seconds.
Why Sparklike Handheld™ Stands Out
Fully compliant with ASTM E2649-20, the Sparklike Handheld™ offers a portable solution for testing argon and krypton levels. Its speed (2-second readings), accuracy, and ease of use make it an essential tool for maintaining quality, reducing warranty claims, and ensuring compliance with global standards like EN 1279-3. 
Source: Sparklike with additional information added by Glass Balkan
