eo_logo
 
Product added to cart
All Products / Optics / Windows and Diffusers / UV and IR Windows / Potassium Bromide (KBr) Windows
See all 8 Products in Family

50mm Dia x 3mm Thickness Uncoated, Potassium Bromide Window

×
Stock #68-811 3-4 days
×
Quantity Selector - Use the plus and minus buttons to adjust the quantity. +
£234.60
Qty 1-10
£234.60
Qty 11+
£210.80
Volume Pricing
Request Quote
Prices shown are exclusive of VAT/local taxes
Get Product Downloads
Solubility, in 100g of H2O @ 273K (g):
53.48

Product Details

Type:
Protective Window

Physical & Mechanical Properties

Bevel:
Protective as needed
Diameter (mm):
50.00 ±0.50
Thickness (mm):
3.00 ±0.50
Edges:
Fine Ground
Knoop Hardness (kg/mm2):
7
Poisson's Ratio:
0.203
Young's Modulus (GPa):
26.8

Optical Properties

Abbe Number (vd):
33.64
Coating:
Uncoated
Index of Refraction nd:
1.56
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Potassium Bromide (KBr)
Surface Quality:
60-40
Wavelength Range (nm):
250 - 26000

Material Properties

Coefficient of Thermal Expansion CTE (10-6/°C):
43
Density (g/cm3):
2.753

Regulatory Compliance

RoHS 2015:
Compliant
×
Certificate of Conformance:
View
×
Reach 240:
Compliant
×

Product Family Description

  • Excellent Transmission from 250nm – 26μm
  • Good Resistance to Mechanical Shock
  • Ideal for FTIR Spectroscopy
  • Sodium Chloride (NaCl) Windows Also Available

Potassium Bromide (KBr) Windows are ideal for FTIR spectroscopy. KBr has a slightly more extensive spectral range than Sodium Chloride (NaCl) and has excellent transmission from 250nm – 26μm. Its index of refraction varies from 1.46 - 1.59 over this range. KBr is water soluble, and its surfaces should be protected from exposure to moisture. Exposure to moisture will degrade the surface of the window. Potassium Bromide (KBr) Windows provide good resistance to mechanical shock, can be easily cleaved, and can be used in temperatures up to 300°C. KBr has a density of 2.75g/cm3 and a Knoop Hardness of 7.0.