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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.

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Model No. Product Price
WBD-U15 Window Al₂O₃ 25 x 1 mm $143.00
WBD-U22 Window Al₂O₃ 13 x 2 mm $72.00
WBD-U24 Window Al₂O₃ 19 x 2 mm $119.00
 
Model No. Product Price
WHD-U11 Window BaF₂ 6 x 1 mm N/A
WHD-U22 Window BaF₂ 13 x 2 mm $98.00
WHD-U23 Window BaF₂ 15 x 2 mm $119.00
WHD-U24 Window BaF₂ 19 x 2 mm $136.00
WHD-U25 Window BaF₂ 25 x 2 mm $140.00
WHD-U36 Window BaF₂ 32 x 3 mm N/A
WHD-U42 Window BaF₂ 13 x 4 mm $160.00
WHD-U43 Window BaF₂ 15 x 4 mm N/A
WHD-U45 Window BaF₂ 25 x 4 mm $169.00
WHD-U62 Window BaF₂ 13 x 6 mm $217.00
 
Model No. Product Price
WFD-U11 Window CaF₂ 6 x 1 mm N/A
WFD-U15 Window CaF₂ 25 x 1 mm $100.00
WFD-U22 Window CaF₂ 13 x 2 mm $62.00
WFD-U23 Window CaF₂ 15 x 2 mm $71.00
WFD-U24 Window CaF₂ 19 x 2 mm $81.00
WFD-U25 Window CaF₂ 25 x 2 mm $90.00
WFD-U36 Window CaF₂ 32 x 3 mm $136.00
WFD-U45 Window CaF₂ 25 x 4 mm $124.00
WFD-U62 Window CaF₂ 13 x 6 mm $128.00
 
Model No. Product Price
WJD-U11 Window Ge 6 x 1 mm N/A
WJD-U22 Window Ge 13 x 2 mm $110.00
WJD-U23 Window Ge 15 x 2 mm $144.00
WJD-U24 Window Ge 19 x 2 mm $181.00
WJD-U25 Window Ge 25 x 2 mm $208.00
WJD-U43 Window Ge 15 x 4 mm N/A
WJD-U45 Window Ge 25 x 4 mm N/A
 
Model No. Product Price
WPD-U11 Window KBr 6 x 1 mm $50.00
WPD-U22 Window KBr 13 x 2 mm $51.00
WPD-U23 Window KBr 15 x 2 mm $57.00
WPD-U24 Window KBr 19 x 2 mm $63.00
WPD-U25 Window KBr 25 x 2 mm $70.00
WPD-U36 Window KBr 32 x 3 mm $72.00
WPD-U38-P Window, protected KBr, 40 x 3 mm N/A
WPD-U45 Window KBr 25 x 4 mm $63.00
WPD-U67 Window KBr 50 x 6 mm $195.00
WPR-U41 Window KBr 38 x 19 x 4 mm $59.00
 
Model No. Product Price
WLD-U11 Window NaCl 6 x 1 mm N/A
WLD-U22 Window NaCl 13 x 2 mm $41.00
WLD-U23 Window NaCl 15 x 2 mm $48.00
WLD-U24 Window NaCl 19 x 2 mm $54.00
WLD-U25 Window NaCl 25 x 2 mm $60.00
WLD-U36 Window NaCl 32 x 3 mm $65.00
WLD-U45 Window NaCl 25 x 4 mm $65.00
WLD-U67 Window NaCl 50 x 6 mm $128.00
WLR-D41 Window NaCl 38 x 19 x 4 mm, Drilled $61.00
WLR-U41 Window NaCl 38 x 19 x 4 mm $48.00
 
Model No. Product Price
RGA-000 Si Polarizer for Refractor2 $426.00
WED-U11 Window Si 6 x 1 mm N/A
WED-U22 Window Si 13 x 2 mm N/A
WED-U23 Window Si 15 x 2 mm N/A
WED-U24 Window Si 19 x 2 mm N/A
WED-U25 Window Si 25 x 2 mm N/A
WED-U43 Window Si 15 x 4 mm N/A
WED-U45 Window Si 25 x 4 mm N/A
 
Model No. Product Price
WAD-754 Window SiO₂ 19 x 0.75 mm $29.00
WAD-U11 Window SiO₂ 6 x 1 mm N/A
WAD-U15 Window SiO₂ 25 x 1 mm $77.00
WAD-U22 Window SiO₂ 13 x 2 mm $64.00
WAD-U23 Window SiO₂ 15 x 2 mm $51.00
WAD-U24 Window SiO₂ 19 x 2 mm N/A
WAD-U25 Window SiO₂ 25 x 2 mm $92.00
WAD-U43 Window SiO₂ 15 x 4 mm $71.00
WAD-U45 Window SiO₂ 25 x 4 mm N/A
 
Model No. Product Price
WID-U22 Window ZnS 13 x 2 mm $159.00
WID-U25 Window ZnS 25 x 2 mm N/A
WID-U36 Window ZnS 32 x 3 mm N/A
WID-U42 Window ZnS 13 x 4 mm $270.00
WID-U43 Window ZnS 15 x 4 mm $277.00
WID-U62 Window ZnS 13 x 6 mm $291.00
 
Model No. Product Price
RGA-001 ZnSe Wedged Window for Reactor2 $675.00
WMD-U11 Window ZnSe 6 x 1 mm N/A
WMD-U22 Window ZnSe 13 x 2 mm $130.00
WMD-U23 Window ZnSe 15 x 2 mm $149.00
WMD-U24 Window ZnSe 19 x 2 mm $166.00
WMD-U25 Window ZnSe 25 x 2 mm $217.00
WMD-U36 Window ZnSe 32 x 3 mm $426.00
WMD-U42 Window ZnSe 13 x 4 mm $191.00
WMD-U43 Window ZnSe 15 x 4 mm $250.00
WMD-U45 Window ZnSe 25 x 4 mm $270.00
WMD-U62 Window ZnSe 13 x 6 mm $267.00
UV-Vis-IR Optical Materials for Windows
  n KH
(psi)
MOR*
(psi)
useful range cm-1 (μm) chemical properties
Windows
1-2mm
IRE
70mm
Al2O3 1.76 1370 65,000 66,000-2000
(0.15-5.0)
33,000-2800
(0.3-3.7)
Slightly soluble in acids and bases
BaF2 1.47 82 3900 50,000-1000
(0.2-11)
33,000-1100
(0.3-9.5)
Low water solubility; soluble in acid and NH4Cl
CaF2 1.43 158 5300 66,000-1300
(0.15-8.0)
33,000-1500
(0.3-7.0)
Insoluble in water; resists most acids and bases; soluble in NH4 salts
Ge 4.0 550 7000 5000-600
(2.0-17)
5000-900
(2.0-1.4)
Insoluble in water, soluble in hot H2SO4, aqua regia
KBr 1.52 7 160 33,000-400
(0.3-25)
20,000-500
(0.5-20)
Soluble in water, alcohol, and glycerine; hygroscopic
NaCl 1.53 15 350 28,000-700
(0.35-15)
25,000-900
(0.4-12
Hygroscopic; soluble in alcohol, water and NH3
Si 3.42 1150 9000 10,000-100
(1.0-100)
9500-1500 350-FIR
(1.06-6.7 30-FIR)
Insoluble in most acids and bases; soluble in HF and HNO3
SiO2 1.45 461 7100 57,000-4600; 3500-2800
(0.175-2.2; 2.9-3.6)
50,000-5,000
(0.2-2.0 )
Insoluble in water; soluble in HF
ZnS 2.19 355 10,000 22,000-750
(0.45-14.0)
14,000-1000
(0.7-10)
Soluble in acid; insoluble in water
ZnSe 2.40 150 8000 20,000-500
(0.5-20)
20,000-700
(0.5-14.3)
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