Hemispheres & Hemicylinders

Harrick Scientific offers several hemispheres and hemicylinders for spectroscopic applications in Al₂O₃, Ge, Si and ZnSe. Our standard sizes are listed below. We welcome the opportunity to quote on other sizes and materials to meet your needs.

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Model No. Product Price
EB7XBD Hemicylinder Al₂O₃ 12.5 x 25 mm (r x l) N/A
Model No. Product Price
EJ6XBB Hemisphere Ge 12.5mm radius $1,368.00
GATR-ATR-J1 Ge Mounted Hemisphere for VariGATR $2,508.00
Model No. Product Price
EE6XBB Hemisphere Si 12.5 mm radius $1,292.00
Model No. Product Price
EM6XBB Hemisphere ZnSe 12.5mm radius $1,307.00
UV-Vis-IR Optical Materials for Hemispheres & Hemicylinders
  n KH
useful range cm-1 (μm) chemical properties
Al2O3 1.76 1370 65,000 66,000-2000
Slightly soluble in acids and bases
Ge 4.0 550 7000 5000-600
Insoluble in water, soluble in hot H2So4 agua regia
Si 3.42 1150 9000 10,000-100
9500-1500 350-FIR
(1.06-6.7 30-FIR)
Insoluble in most acids and bases; soluble in HF and HNO3
ZnSe 2.40 150 8000 20,000-500
Soluble in strong acids; dissolves in HNO3
n: Refractive IndexKH: Knoop HardnessMOR: Rupture Modulus