Testing Argon Gas Level
Shown: Testing the level of Argon Gas in an insulated glass unit.

Argon Gas Filled Insulated Glass

Argon is an inert gas, heavier than air, used to fill the sealed air space of high-performance insulated glass units. It has no harmful effects. Filling the sealed air space with Argon improves thermal performance by slowing convection currents within the sealed insulated unit.