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| Brand | Shodex |
|---|---|
| Origin | Japan |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Product Category | Imported Instrument |
| Model | RI-201H |
| Detection Principle | Differential Refractive Index (dRI) |
| Compatible System | High-Performance Liquid Chromatography (HPLC) |
| Detector Type | Refractometer-Based Chromatographic Detector |
| Flow Cell Design | Dual-Chamber |
| Refractive Index Range | 1.00–1.75 |
| Detection Sensitivity Range | 0.25–512 µRIU |
| Baseline Drift | ≤0.2 µRIU/h (deionized water, 1 mL/min, purge off) |
| Linearity | ≥600 µRIU |
| Noise Level | ≤2.5 nRIU (deionized water, 1.5 s response time) |
| Response Time Settings | 0.1, 0.25, 0.5, 1, 1.5, 2, 3, 6 s |
| Auto-Zero Function | Full-range automatic zeroing |
| Offset Adjustment Range | ±10 µRIU |
| Offset Resolution | 50 nRIU |
| Analog Output | DC 0–1 V (2 mV/µRIU or 8 mV/µRIU selectable) |
| Flow Cell Volume | 8 µL |
| Recommended Flow Rate | 0.2–3.0 mL/min |
| Maximum Flow Rate | 10 mL/min (water) |
| Maximum Backpressure | 50 kPa |
| Dead Volume | IN→Cell ≈ 60 µL |
| Recorder Output | 0–10 mV full scale |
| External I/O Signals | READY, LEAK, ERROR (ROM/RAM/Parameter/Home Position/Overheat/Optical Balance/Intensity) |
| Temperature Control | Off, 30–55 °C (1 °C increments), thermal fuse at 77 °C |
| Interface | USB |
| Wetted Materials | ASTM F899 stainless steel 316, PTFE, fused silica quartz |
| Power Supply | AC 100–240 V ±10%, 50/60 Hz, max. 150 VA |
| Dimensions & Weight | 260 × 400 × 150 mm (W×D×H), approx. 12 kg |
| Brand | Shodex |
|---|---|
| Origin | Japan |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Product Category | Imported Instrument |
| Models | RI-501, RI-502, RI-504 |
| Detection Principle | Differential Refractive Index (dRI) |
| Light Source | Deuterium Lamp |
| Temperature Control | Dual-zone thermostatic control (30–55 °C) |
| Flow Rate Range | 0.2–3.0 mL/min (RI-501/RI-504), 1–50 mL/min (RI-502) |
| Cell Volume | 8 μL (RI-501/RI-502), 2.5 μL (RI-504) |
| Noise Level | ≤2.5 nRIU (RI-501), ≤25 nRIU (RI-502), ≤5 nRIU (RI-504) |
| Drift | ≤0.2 μRIU/h (RI-501/RI-504), ≤2 μRIU/h (RI-502) |
| Response Time | Adjustable from 0.1 to 6 s |
| Output Interface | LAN, Analog (0–1 V, 0–10 mV/FS), Digital I/O (READY/LEAK/ERROR) |
| Wetted Materials | SUS316 Stainless Steel, PTFE, Fused Silica |
| Compliance | CE Marked, RoHS Compliant |
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