US Constitution in an Environmental Test Chamber
Since 1952, the Constitution has been on display in the National Archives Building in Washington, DC. Currently, all four pages are displayed behind protective glass framed with titanium. To preserve the parchment’s quality, the cases contain argon gas and are kept at 67 degrees Fahrenheit with a relative humidity of 40 percent. This type of controlled temperature/humidity environment is what Cascade TEK's climatic test services do. The argon gas atmosphere is what is known as an "inert atmosphere" - Cascade TEK can create that atmopshere as well and it's a popular option with our Forced Air Lab Ovens. Keep on rockin' in the free world!