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| Brand | Annuo |
|---|---|
| Origin | Henan, China |
| Model | FEA-5023 |
| Product Type | Handheld Refractometer |
| Temperature Control | Yes |
| Digital Display | Yes |
| Refractive Index Range | 1.3330–1.5290 |
| Ethanol Concentration Range (v/v) | 3%–13% |
| Measurement Precision (Refractive Index) | ≤ ±0.003 RIU (equivalent to ≤3% relative error in ethanol quantification) |
| Dimensions | 250 × 200 × 75 mm |
| Power Consumption | 5 W |
| Operating Temperature | 5–40 °C |
| Storage Temperature | −10–50 °C |
| Operating Humidity | 20–80% RH |
| Storage Humidity | 5–90% RH |
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