Harrick Scientific offers a variety of polished windows for infrared and UV-Vis spectroscopy. Our windows are available in a variety of optical materials, including BaF₂, CaF₂, Ge, KBr, NaCl, Si, SiO₂, ZnSe and ZnS. Our stock discs are listed below. All windows are sold individually. For any sizes or materials not listed, we welcome the opportunity to quote.
UV-Vis-IR Optical Materials for Windows
|Useful Range cm-1 (μm)||Chemical Properties|
|Slightly soluble in acids and bases|
|Low water solubility; soluble in acid and NH4Cl|
|Insoluble in water; resists most acids and bases; soluble in NH4 salts|
|Insoluble in water, soluble in hot H2SO4, aqua regia|
|Soluble in water, alcohol, and glycerine; hygroscopic|
|Hygroscopic; soluble in alcohol, water and NH3|
|Insoluble in most acids and bases; soluble in HF and HNO3|
|Insoluble in water; soluble in HF|
|Soluble in acid; insoluble in water|
|Soluble in strong acids; dissolves in HNO3|
|n: Refractive IndexKH: Knoop HardnessMOR: Rupture Modulus|
†The apparent elastic limit is reported for those materials which permanently bend prior to rupturing.
*The modulus of rupture (MOR), m, determines the size of the window needed to withstand a pressure, p.
For a four times safety factor, the thickness of a mounted window, t, with an unsupported diameter, d, is:
tclamped = 0.866 d (p/m)1/2
tunclamped = 1.05 d (p/m)1/2