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| Brand | Hanna Instruments |
|---|---|
| Origin | Italy |
| Model | HI83099 |
| Instrument Type | Portable Photometer |
| Measurement Principle | Colorimetric Absorption (Dichromatic LED-Based Optical System) |
| Wavelengths | 420 nm, 525 nm, 575 nm, 610 nm |
| COD Range Options | 0–150 mg/L (LR), 0–1500 mg/L (MR), 0–15000 mg/L (HR) |
| COD Accuracy | ±10% of reading |
| Repeatability | ±5% |
| LOD (COD-LR) | 0.1 mg/L |
| Measurement Time | 20 min per sample (digestion not included) |
| Batch Capacity | 15 or 30 samples simultaneously (with optional digestion block) |
| Compliance | EPA Method 410.4, ISO 15705 |
| Data Storage | 200 measurement records with timestamp, sample ID, and operator ID |
| Power | Rechargeable 9V battery or AC adapter (230 VAC / 12 VDC) |
| Dimensions | 235 × 200 × 110 mm |
| Weight | 640 g |
| Certifications | CE, RoHS |
| Environmental Rating | IP67-rated housing (dust-tight, immersion-resistant up to 1 m for 30 min) |
| GLP Features | Real-time clock, audit trail, auto-zero calibration, background-lit LCD |
| Brand | Hach |
|---|---|
| Origin | USA |
| Model | DR1010 |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Spectrophotometric (Dichromatic Absorption at 420 nm and 610 nm) |
| Wavelength Accuracy | ±1 nm |
| Photometric Linearity | ±0.002 A (0–1 A) |
| Photometric Repeatability | ±0.005 A (0–1 A) |
| Photometric Accuracy | ±0.005 A at 1.0 ABS |
| Light Source | LED |
| Detector | Silicon Photodiode |
| Display | 4-digit LCD, 1.5 cm character height |
| Optical Range | 0–2 A |
| Drift | <1.0% at 420 nm |
| Power Supply | 6 VDC adapter (190–240 VAC/50 Hz) or 4 × AA alkaline batteries |
| Battery Life | Up to 6 months (typical usage) |
| Operating Temperature | 0–50 °C |
| Storage Temperature | −20–60 °C |
| Relative Humidity | ≤80% at 40 °C |
| Enclosure Rating | IP41 |
| Dimensions | 24.0 × 19.8 × 12.0 cm |
| Weight | 2.0 kg |
| Data Interface | RS232 serial port |
| Readout Modes | % Transmittance, Absorbance, Concentration |
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