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| Brand | ERUN |
|---|---|
| Origin | Shaanxi, China |
| Manufacturer Type | Authorized Distributor |
| Country of Manufacture | China |
| Model | ERUN-ST7-B4 |
| Instrument Type | Laboratory Benchtop Volatile Phenol Analyzer |
| Measurement Principle | Spectrophotometry (4-Aminoantipyrine Method per ISO 6439 & HJ 503-2009) |
| Range | 0.2–10.00 mg/L |
| Accuracy | ±5% FS |
| Repeatability | ≤2% RSD |
| Baseline Drift | <0.002 Abs/30 min |
| Wavelength Selection | Auto-selectable (500 nm standard for phenol detection) |
| Optical System | Fixed-wavelength LED-based photometer with calibrated optical path |
| Light Intensity Control | 16-step adjustable intensity |
| Calibration Curve Options | Linear or Multi-point Nonlinear (up to 8 calibration points) |
| Data Storage | 100,000 records (timestamp, absorbance, transmittance, concentration, user ID, curve ID) |
| Display | 7-inch capacitive color touchscreen with on-screen operation guide |
| Connectivity | USB 2.0 host port for data export (CSV format), no network or cloud interface |
| Power Supply | AC 220 V ±10%, 50 Hz ±0.5 Hz |
| Environmental Requirements | Stable lab environment — no direct sunlight, minimal vibration, low EMI |
| Compliance | Designed to support compliance with ISO/IEC 17025 quality management systems |
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