Product Description
Perkin-Elmer 983 Research-Grade Infrared Spectrophotometer – High-Performance Dispersive IR System for Optical Coatings and Materials Analysis
This used Perkin-Elmer Model 983 is a premier research-grade dispersive infrared spectrophotometer that has remained the industry standard for optical coating manufacturers worldwide. The Model 983 was Perkin-Elmer’s top-of-the-line dispersive IR instrument, representing the pinnacle of dispersive technology before the widespread adoption of FT-IR systems.
The 983 covers an exceptional spectral range of 5000 cm⁻¹ to 180 cm⁻¹ (2 to 56 microns) with selectable resolution from 10 cm⁻¹ down to 0.5 cm⁻¹. It features a dual-beam optical system with a thermocouple detector, ratio recording, and comprehensive built-in data handling capabilities including a CRT display with “soft key” menu control, spectral storage memory, digital smoothing, and a high-speed printer/plotter for spectrum output.
The instrument supports advanced features including on-the-fly spectral subtraction, spectral accumulation (signal averaging), absorbance expansion (ABEX) for weak spectra, and automatic annotation of measurement conditions. It can be interfaced with the Perkin-Elmer 3600 Data Station for expanded data processing and connection to laboratory management networks.
Note: The Perkin-Elmer 983 is a dispersive (grating) spectrophotometer, not a Fourier-Transform (FT-IR) instrument. It remains highly valued by optical coating companies and research laboratories for its exceptional ordinate accuracy (±0.1%T) and reliability. OLIS offers modern upcycling services, replacing original electronics while retaining the precision optics.
Condition Note: This unit is untested and sold as-is. It is a complete spectrophotometer system. No data station, computer interface, or software are included unless specified. The unit should be inspected by a qualified service technician before powering on.
Key Specifications
| Specification | Details |
|---|---|
| Manufacturer | Perkin-Elmer Corporation |
| Model | 983 |
| Type | Research-grade dispersive IR spectrophotometer |
| Optical System | Dual-beam, grating (not FT-IR) |
| Spectral Range | 5000 cm⁻¹ – 180 cm⁻¹ (2 – 56 microns) |
| Resolution | Selectable: 10 cm⁻¹ down to 0.5 cm⁻¹ |
| Ordinate Accuracy | ±0.1% Transmission |
| Detector Type | Thermocouple detector |
| Chopper Frequency | 30 Hz (BSC) / 10 Hz (PSC) original design |
| Display | CRT with interactive “soft key” menu |
| Data Output | Thermal flow chart recorder (printer/plotter) |
| Spectral Memory | Yes – full-range storage |
| Data Processing | Signal averaging, digital smoothing, spectral subtraction, absorbance expansion (ABEX) |
| Computer Interface | RS-232 (9600 baud) |
| Accessories | Sample holders for plates, tubes, petri dishes, test plates |
| Intended Use | Optical coatings, liquid/gas/solid analysis, QC, research |
| Documentation | Service Manual available (referenced in technical literature) |
| Condition | Used – Untested |
Key Features & Benefits
| Feature | Benefit |
|---|---|
| Industry Standard for Optical Coatings | Despite FT-IR advances, the 983 remains the standard for optical coating measurement |
| Exceptional Spectral Range | 5000-180 cm⁻¹ (2-56μm) covers far-IR to near-IR |
| High Resolution (0.5 cm⁻¹) | Sufficient for detailed vibrational analysis of solids and liquids |
| ±0.1%T Ordinate Accuracy | Critical for quality control in optical coating production |
| Dual-Beam Operation | Ratio recording cancels atmospheric and instrument background |
| Built-in Data Station | CRT, soft keys, spectral memory, and printer/plotter standard |
| Spectral Subtraction | Eliminate solvent or background absorptions and resolve mixture components |
| Signal Averaging (Coadd) | Decrease noise for weak or difficult samples |
| Upcyclable | OLIS offers modern electronics upgrade (CLARiTY software, Windows 11) |
Applications
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Optical Coating Manufacturing: Quality control for anti-reflective, reflective, and filter coatings (industry standard)
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Thin Film Analysis: Transmission and reflection measurement of optical components
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Materials Research: Polymer, composite, and ceramic analysis
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Quality Control: Absorbance and transmittance measurements per ISO standards
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Academic Research: University chemistry, physics, and materials science laboratories
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Failure Analysis: Organic and inorganic contaminant identification
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Pharmaceutical Analysis: Raw material verification and formulation QC
















