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| Brand | Rudolph |
|---|---|
| Origin | USA |
| Model | J-Series Refractometer Module |
| Product Type | Benchtop Refractometer |
| Temperature Control | Yes (Dual-zone semiconductor Peltier) |
| Digital Display | Yes (10.4" color TFT touchscreen) |
| Measurement Range | 1.26–1.72 RI, 0–100 Brix |
| Measurement Resolution | 0.00001 RI |
| Accuracy | ±0.00002 RI, ±0.015 Brix |
| Temperature Control Range | 10–110 °C (120 °C optional) |
| Temperature Stability | ±0.01 °C |
| Prism Material | Sapphire |
| Interface | RS-232, USB, Cat5 Ethernet |
| Compliance | NIST-traceable calibration standards available |
| Design | Modular split architecture (separate measurement head and control unit) |
| Brand | Rudolph |
|---|---|
| Origin | USA |
| Model | J57-VT |
| Product Type | Benchtop Refractometer |
| Temperature Control | Yes |
| Digital Display | Yes |
| Measurement Range | 1.33–1.53 RI, 0–100 °Brix |
| Measurement Accuracy | ±0.00002 RI, ±0.01 °Brix |
| Resolution | 0.00001 RI, 0.01 °Brix |
| Wavelength | 589.3 nm (Na-D line, other wavelengths optional) |
| Temperature Control Range | 10–65 °C |
| Temperature Stability | ±0.01 °C |
| Compliance | ASTM D1218, ISO 2163, USP <781>, AOAC 932.12 |
| Brand | Rudolph |
|---|---|
| Origin | USA |
| Model | J157 |
| Product Type | Benchtop Refractometer |
| Temperature Control | Yes |
| Digital Display | Yes |
| Measurement Range | 1.33–1.53 RI, 0–100 °Brix |
| Measurement Accuracy | ±0.00002 RI, ±0.01 °Brix |
| Resolution | 0.00001 RI, 0.01 °Brix |
| Wavelength | 589.3 nm (Na-D line), optional alternate wavelengths available |
| Temperature Control Range | 10–90 °C |
| Temperature Stability | ±0.01 °C |
| Sample Interface Options | Dropper, Flow Cell, and Pour-in Configurations |
| Brand | Rudolph |
|---|---|
| Origin | USA |
| Model | J457 |
| Product Type | Benchtop Refractometer |
| Temperature Control | Yes (Peltier dual-zone) |
| Digital Display | Yes |
| Measurement Range | 1.26–1.72 RI, 0–100 °Brix |
| Measurement Resolution | 0.000001 RI, 0.01 °Brix |
| Accuracy | ±0.000002 RI, ±0.015 °Brix |
| Temperature Control Range | 10–110 °C (120 °C optional) |
| Temperature Stability | ±0.01 °C |
| Prism Material | Sapphire |
| Display | 10.4″ color TFT touchscreen |
| Interface | RS-232, USB, Cat5 Ethernet |
| Compliance | NIST-traceable calibration standards available |
| Enclosure Rating | IP65-rated for dust and water resistance |
| Configuration | Modular split-system (remote sensor head + control unit) |
| Brand | Rudolph |
|---|---|
| Origin | USA |
| Model | J357 |
| Instrument Type | Benchtop Refractometer |
| Temperature Control | Yes (Peltier-based, 10–100 °C standard, –5 to 110 °C optional) |
| Digital Display | Yes (8-inch color TFT touchscreen) |
| Measurement Range | 1.26–1.72 RI, 0–100 °Brix |
| Measurement Accuracy | ±0.00002 RI, ±0.015 °Brix |
| Measurement Resolution | 0.00001 RI, 0.01 °Brix |
| Wavelength | 589.3 nm (Na-D line), optional alternate wavelengths available |
| Prism Material | Sapphire (≥20 mm diameter) |
| Calibration Options | Single-, dual-, and multi-point calibration |
| Data Storage | 32 GB internal memory |
| Connectivity | RS-232, USB, Cat5 Ethernet |
| Software Compliance | Optional 21 CFR Part 11 audit trail & electronic signature support |
| Operating System | Windows 7 Embedded |
| LIMS Integration | Yes |
| Smart Measurement Technology | SmartMeasure™ |
| Sample Handling | Load-N-Go™ automated sample introduction |
| Cleaning Design | Easy Clean™ flat-cell geometry |
| Regulatory Standards Support | NIST-traceable reference materials available |
| Trend Analysis | Real-time QC data visualization and statistical trending |
| Brand | Rudolph |
|---|---|
| Origin | USA |
| Model | J257 |
| Type | Benchtop Refractometer |
| Temperature Control | Yes |
| Digital Display | Yes |
| Measurement Range | 1.26–1.72 RI, 0–100 °Brix |
| Measurement Accuracy | ±0.0001 RI, ±0.1 °Brix |
| Resolution | 0.00001 RI, 0.01 °Brix |
| Wavelength | 589.3 nm (Na-D line), optional alternate wavelengths available |
| Temperature Control Range | 10–100 °C (extended range: –5 to 110 °C) |
| Temperature Stability | ±0.01 °C |
| Prism Material | Sapphire (diameter > 20 mm) |
| Interface | RS-232, USB, Cat5 Ethernet |
| Storage | 32 GB internal memory |
| Display | 8-inch color touchscreen |
| Operating System | Windows 7 Embedded |
| Compliance Options | FDA 21 CFR Part 11 audit trail & electronic signature support (optional) |
| Software Features | SmartMeasure™ real-time measurement validation, Load-N-Go™ rapid sample loading, Easy Clean™ flat-cell design, Trend Analysis for QC monitoring, LIMS integration capability |
| Calibration Modes | Single-point, two-point, and multi-point calibration |
| Certified Reference Materials | NIST-traceable standards available |
| Brand | Rudolph |
|---|---|
| Origin | USA |
| Model | J47 |
| Product Type | Benchtop Refractometer |
| Temperature Control | Yes |
| Digital Display | Yes |
| Measurement Range | 1.33–1.53 RI, 0–100 °Brix |
| Measurement Accuracy | ±0.00002 RI, ±0.01 °Brix |
| Resolution | 0.00001 RI, 0.01 °Brix |
| Wavelength | 589.3 nm (Na-D line), optional alternate wavelengths available |
| Light Source | LED (>100,000 h lifetime) |
| Calibration | 1-, 2-, or multi-point |
| Interface | USB |
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