Golden Gate With ZnSe Lenses and Germanium Crystal

Highlights

• 45º single reflection Germanium crystal
• Highest load for maximum sensitivity
• Built-in load limit prevents crystal damage
• Pressures up to 2 kbar (29,000 p.s.i., 720 lb load)
• Excellent sample to crystal contact
• Quick release pressure bridge with safety interlock
• Working range 5000-550 cm-1

Traditionally difficult samples, such as those containing high concentrations of carbon black, require controlled penetration of the infrared beam. The high refractive index of germanium,4 at 1000cm-1, makes this ATR material an ideal choice for these samples. Optimum sensitivity is achieved using a 4x4 mm germanium crystal cemented into a rugged stainless steel disk for maximum strength and support.

The shallow depth of penetration with no band distortion overcomes difficult quantitative analysis of strongly infrared absorbing materials. Similarly, corrosive samples, thin films and surface coatings can also be analyzed.