Product Description
Spex 1702/04 0.85m and Spex 1870 0.5m Double Spectrometer System – High-Resolution Dual Monochromator for Raman and Fluorescence Spectroscopy
This used Spex double spectrometer system combines a Model 1702/04 0.85m spectrometer with a Model 1870 0.5m spectrometer, forming a powerful dual-monochromator setup typically configured in subtractive or additive mode for high-resolution Raman and fluorescence spectroscopy applications .
The Spex 1702/04 is documented as being paired with a Princeton Instruments cooled CCD detector and a 100mW doubled YAG laser (532nm) for Raman spectroscopy applications . The system was originally part of the optical characterization capabilities at research institutions .
Spex (formerly Spex Industries, now part of Horiba Scientific) was a leading manufacturer of high-quality spectroscopic instrumentation. Their double spectrometer systems were widely used in research laboratories for Raman spectroscopy, luminescence studies, and high-resolution fluorescence measurements.
Condition Note: These units are untested and sold as-is. This listing is for the spectrometer systems only. No detectors, gratings (unless specified), light sources, or computer interfaces are included unless specified. The 1702/04 listing indicates no detector is included, only a photomultiplier housing .
Key Specifications
| Specification | Spex 1702/04 | Spex 1870 |
|---|---|---|
| Manufacturer | Spex Industries (Horiba) | Spex Industries (Horiba) |
| Model | 1702/04 | 1870 |
| Focal Length | 0.85 meters (850 mm) | 0.5 meters (500 mm) |
| Spectral Range | 0.2 – 6.0 µm (UV-VIS-NIR) | [Typical UV-VIS-NIR] |
| Grating | 600 grooves/mm (as listed) | [Unknown, inspect] |
| Configuration | Double spectrometer (primary) | Double spectrometer (secondary) |
| Detector | Photomultiplier housing only | Not specified |
| Intended Use | Raman, fluorescence, luminescence | Secondary dispersion |
| Condition | Used – Untested | Used – Untested |
Key Features & Benefits
| Feature | Benefit |
|---|---|
| Dual Monochromator Configuration | Provides high stray light rejection essential for Raman and low-level fluorescence measurements |
| 0.85m Focal Length (1702/04) | High resolution and dispersion for detailed spectral analysis |
| Interchangeable Gratings | Allows flexibility to optimize for different spectral ranges |
| Wide Spectral Coverage | 0.2-6.0 µm covers UV, visible, and NIR (1702/04) |
| Additive/Subtractive Mode Operation | Versatile for both high resolution and stray light rejection |
| Proven Research Platform | Used in NASA JPL and university research settings |
| Compatible with CCD Detectors | Can be upgraded with modern CCD for current research use |
Applications
-
Raman Spectroscopy: High-resolution Raman analysis of materials
-
Fluorescence Spectroscopy: Low-level fluorescence measurements
-
Luminescence Studies: Phosphorescence and time-resolved emission
-
Optical Characterization: Research laboratory spectroscopy
-
Thin Film Analysis: Optical properties of coatings
-
Semiconductor Material Analysis: Band gap and impurity studies
-
Academic Research: University chemistry and physics laboratories
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