Calcium Fluoride (CaF2) Replacement Window for Glass Vacuum Gas Cell, 1.5" (38.1 mm) OD, 0.236" (6 mm) Thickness. 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) PropertiesOpticalTransmission 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 µmChemical behavior of polished surfacesClimatic 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.)

Barium Fluoride (BaF2) Replacement Window for Glass Vacuum Gas Cell, 1.5" (38.1 mm) OD, 0.236" (6 mm) Thickness. This listing is for the sale of one (1) replacement window for an Ideal Vacuum Glass Vacuum Gas Cell with the following characteristics: Material: Barium Fluoride (BaF2). Dimensions: 1.5" (38.1 mm) OD, 0.236" (6 mm) Thickness. Flat, No Wedge. Barium Fluoride (BaF2) PropertiesOpticalTransmission Range: 0.15 to 12 µm Refractive Index: 1.45 at 5 µm Reflection Loss: 6.5% at 5 µm Absorption Coef.: 3.2 x 10-4 cm-1 @ 6µm Reststrahlen Peak: 47 µmChemical behavior of polished surfacesClimatic 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: 0.17g/100g water at 20°C (Do not immerse in water.)

Sodium Chloride (NaCl) Replacement Window for Glass Vacuum Gas Cell, 1.5" (38.1 mm) OD, 0.236" (6 mm) Thickness. This listing is for the sale of one (1) replacement window for an Ideal Vacuum Glass Vacuum Gas Cell with the following characteristics: Material: Sodium Chloride (NaCl). Dimensions: 1.5" (38.1 mm) OD, 0.236" (6 mm) Thickness. Flat, No Wedge. Sodium Chloride (NaCl) PropertiesOpticalTransmission Range: 0.2 to 15 µm Refractive Index: 1.49 at 10.6 µm Reflection Loss: 7.5% at 10.6 µm Absorption Coef.: 7.0 x 10-6 cm-1 at 10.6 µm Reststrahlen Peak: 50.1 µmChemical behavior of polished surfacesClimatic 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: 35.7g/100g water at 20°C (Do NOT immerse in water.)

Potassium Chloride (KCl) Replacement Window for Glass Vacuum Gas Cell, 1.5" (38.1 mm) OD, 0.236" (6 mm) Thickness. This listing is for the sale of one (1) replacement window for an Ideal Vacuum Glass Vacuum Gas Cell with the following characteristics: Material: Potassium Chloride (KCl). Dimensions: 1.5" (38.1 mm) OD, 0.236" (6 mm) Thickness. Flat, No Wedge. Potassium Chloride (KCl) PropertiesOpticalTransmission Range: 0.21 to 21 µm Refractive Index: 1.456 at 10 µm Reflection Loss: 6.8% at 10 µm Absorption Coef.: 6.5 x 10-3 cm-1 at 10.6 µm Reststrahlen Peak: 63.1 µmChemical behavior of polished surfacesClimatic 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: 34.7g/100g water at 20°C (Do NOT immerse in water.)

Calcium Fluoride (CaF2) Replacement Window for Glass Vacuum Gas Cell, 1.5" (38.1 mm) OD, 0.236" (6 mm) Thickness. This listing is for the sale of one (1) replacement window for an Ideal Vacuum Glass Vacuum Gas Cell with the following characteristics: Material: Potassium Bromide (KBr). Dimensions: 1.5" (38.1 mm) OD, 0.236" (6 mm) Thickness. Flat, No Wedge. Potassium Bromide (KBr) PropertiesOpticalTransmission Range: 0.23 to 28 µm Refractive Index: 1.527 at 5 µm Reflection Loss: 8.3% at 10 µm Absorption Coef.: 3.0 x 10-6 cm-1 @ 1.06 µm Reststrahlen Peak: 77.6 µmChemical behavior of polished surfacesClimatic 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: 53.48g/100g water at 20°C (Do NOT immerse in water.)