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| Brand | ATAGO |
|---|---|
| Origin | Japan |
| Model | 2391 |
| Product Type | Handheld Refractometer |
| Temperature Compensation | Automatic (ATC) |
| Measurement Range | 0.0–33.0% Brix |
| Minimum Scale Division | 0.2% Brix |
| Accuracy | ±0.2% Brix (at 10–30°C) |
| Repeatability | ±0.1% Brix |
| Dimensions | 3.3 × 3.3 × 20.4 cm |
| Weight | 100 g |
| IP Rating | IP65 (excluding eyepiece area) |
| Accessories | RE-29401 Extractor, RE-110010 (10% sucrose standard, ±0.03%), RE-110030 (30% sucrose standard, ±0.03%), RE-2311-55M micro-sample prism cover, RE-2311-54M daylight plate |
| Brand | Anton Paar |
|---|---|
| Origin | Austria |
| Model | Abbemat 450 / Abbemat 650 / Abbemat HT / Abbemat MW |
| Product Type | Benchtop Refractometer |
| Temperature Control | Yes |
| Digital Display | Yes |
| Refractive Index Accuracy | ±0.00001 (Abbemat 450), ±0.000001 (Abbemat 650 & HT) |
| Refractive Index Range | 1.26–1.72 (450/650), 1.30–1.72 (HT) |
| Brix Range | 0–100% |
| Temperature Range | 4–85 °C (450/650), 10–110 °C (HT) |
| Wavelength | 589.3 ± 0.1 nm (Na D-line) |
| Light Source | LED (>100,000 h lifetime) |
| Prism Material | Synthetic Sapphire (450/650), YAG (HT/MW) |
| Minimum Sample Volume | ~0.2 mL |
| Measurement Time | 5 s (post-thermal equilibrium) |
| IP Rating | IP68 (450/650) |
| Compliance | FDA 21 CFR Part 11, GLP/GMP-ready, 3Q Documentation Available (DQ/IQ/OQ/PQ) |
| Connectivity | RS-232, CAN bus, Ethernet, VGA |
| Software | Windows-based PDC (Precision Data Control) |
| Brand | Anton Paar |
|---|---|
| Origin | Austria |
| Instrument Type | Benchtop Refractometer |
| Temperature Control | Integrated Peltier |
| Digital Display | Yes |
| Refractive Index Range | 1.30–1.72 nD |
| Refractive Index Accuracy | ±0.000001 nD |
| Wavelength Options | 8 discrete wavelengths from 435.8 nm to 656.3 nm |
| Prism Material | YAG (Yttrium Aluminum Garnet) |
| Sample Volume | ~0.2 mL |
| Measurement Time per Sample | 5 s (after thermal equilibration and filter switching) |
| Temperature Range | 10–70 °C |
| Temperature Stability | ±0.002 °C |
| Calibration | Single- or two-point |
| Interface | RS-232 |
| Brand | Anton Paar |
|---|---|
| Origin | Austria |
| Instrument Type | Benchtop Refractometer |
| Temperature Control | Yes |
| Digital Display | Yes |
| Refractive Index Range | 1.26–1.72 |
| Accuracy (nD) | ±0.0001 |
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