This listing is for the sale of one (1) replacement window for an Ideal Vacuum Glass Vacuum Gas Cell with the following characteristics:

• Material: Calcium Fluoride (CaF₂).
• Dimensions: 1.5" (38.1 mm) OD, 0.236" (6 mm) Thickness.
• Flat, No Wedge.

Calcium Fluoride (CaF₂) Properties

Optical Transmission Range: 0.13 to 10 µm Refractive Index: 1.399 at 5 µm Reflection Loss: 5.4% at 5 µm Absorption Coef.: 7.8 x 10-4 cm-1 at 2.7 µm Reststrahlen Peak: 35 µm

Chemical behavior of polished surfaces Climatic resistance class CR (n/a) (ISO/WD 13384) Acid resistance class SR (n/a) (ISO 8424) Alkali resistance class AR (n/a) (ISO 10629) Phosphate resistance class PR (n/a) (ISO 9689) Stain resistance class FR (n/a) Solubility: 0.0017g/100g water at 20°C (Do NOT immerse in water.)