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KBr Potassium Bromide Window
KBr Potassium Bromide Parameter
| Refractive index | nd=1.559, n(10 μm)=1.525 |
| Melting point | Melting point |
| Density | 2.75g/cm³ |
| Moh’s hardness | Level 2 |
| Cleavage plane | [100] |
| Solubility | 53.5g/100g H₂O |
| Transmission range | 0.2~25μm |
| Coefficient of thermal expansion | 3.76 × 10⁻⁵ /℃ |
| Thermal conductivity | 0.0115 c/g·℃·cm·s |
High-Performance Potassium Bromide KBr Window for Infrared Spectroscopy
The Potassium Bromide (KBr) Window is an essential optical component used in infrared spectroscopy due to its excellent transmittance and broad spectral range. It provides outstanding transparency in the wavelength range of 0.25 μm to 25 μm, making it ideal for mid-infrared applications such as Fourier transform infrared (FTIR) spectrometers, spectrophotometers, and optical systems. With a purity level of up to 99.99%, this KBr window ensures minimal absorption and distortion, offering reliable performance for analytical and research purposes.
Reliable Material Properties and Applications
The Potassium Bromide KBr Window features high optical homogeneity, low scatter, and precise surface flatness. However, because KBr is hygroscopic, it should be stored and used in a dry environment to prevent moisture absorption. When paired with Liquid sample accessories, this optical window enables accurate transmission analysis of various liquid samples. It is widely used in laboratory spectroscopy, pharmaceutical testing, and chemical analysis industries.
Key Properties:
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Wavelength range: 0.25 μm–25 μm
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Transmittance: >90% in the mid-IR range
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Purity: 99.99%
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Hardness: 18 kg/mm² (Knoop)
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Refractive Index: 1.53 at 10 μm
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Density: 2.75 g/cm³
Handling and Storage Recommendations
To maintain the integrity of KBr windows, always handle them using gloves or tweezers to avoid moisture and contamination. Keep them in a desiccated container when not in use. If cloudiness appears due to humidity, gently dry under low heat before reuse. For optimal performance, use the KBr window as part of your ir sample preparation workflow to ensure consistent analytical results.
Trusted Quality in Spectroscopic Components
Hench is a professional manufacturer of high-precision optical and infrared spectroscopy components. Our product range includes KBr windows, sample holders, and other accessories designed to enhance analytical accuracy and efficiency. All products are produced under strict quality control and are compatible with major FTIR spectrometer brands. To explore more products and related accessories, visit our lab supplies category.
