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| Brand | Topo (TP) |
|---|---|
| Origin | Tianjin, China |
| Manufacturer Type | OEM Manufacturer |
| Regional Classification | Domestic (China) |
| Model | LR-1 / LR-2 |
| Pricing | Upon Request |
| Spectral Repeatability | ≤0.2 nm |
| Wavelength Range (LR-1) | 300–650 nm |
| Wavelength Range (LR-2) | 300–800 nm |
| Wavelength Accuracy | ≤±0.4 nm |
| Stray Light | ≤0.3% T |
| Relative Aperture | f/5.5 |
| Grating Density | 1200 lines/mm |
| Slit Width Adjustment | 0–2 mm (continuous, motorized or manual) |
| Slit Position Resolution | 0.01 mm per division (max. 20 mm travel) |
| Spectral Bandwidth (FWHM @ 589 nm, 3 mm height × 0.2 mm width slit) | ≤0.2 nm |
| Detection Unit | Single-Photon Counting Module (SPCM) |
| Excitation Source (LR-1) | He–Ne Laser (632.8 nm, >40 mW, linearly polarized, external cavity) |
| Excitation Source (LR-2) | Tunable-Power Semiconductor Laser (532 nm, >40 mW) |
| Optional Accessories | Notch Filter, Sample Holders for Solids & Liquids, Polarizer/Analyzer Set, Calibration Standards (e.g., Silicon, Cyclohexane) |
| Brand | Topo |
|---|---|
| Model | LR-3 |
| Type | Grating-Based Raman Spectrometer |
| Spectral Range | 200–800 nm |
| Spectral Resolution | ≤0.4 nm |
| Wavelength Accuracy | ≤0.4 nm |
| Wavelength Repeatability | ≤0.2 nm |
| Excitation Source | 532 nm Semiconductor Laser |
| Laser Power | ≥50 mW |
| Slit Mechanism | Motorized Auto-Adjustable (Precision: 0.01 mm) |
| Monochromator | f/5.5, 1200 lines/mm Grating |
| Detection | Photon-Counting PMT with Discriminator Circuitry |
| Sample Stages | 5-Axis Adjustable, Backscattering, Liquid Cuvette, Solid, Capillary, and Polarization-Compatible Mounts |
| Software Compatibility | Windows XP / 2000 / Vista |
| Origin | Tianjin, China |
| Manufacturer | Topo Instrument Co., Ltd. |
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