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| Brand | Merck |
|---|---|
| Origin | Germany |
| Model | Pharo 100 |
| Instrument Type | Laboratory Water Quality Analyzer |
| Detection Capability | Multi-Parameter (≥50 parameters) |
| Wavelength Range | 320–1100 nm |
| Light Source | Tungsten Halogen Lamp |
| Optical System | Stabilized Single-Beam |
| Spectral Bandwidth | 4 nm |
| Wavelength Accuracy | ±1 nm |
| Absorbance Range | ±3.3 A |
| Absorbance Resolution | 0.001 A |
| Absorbance Accuracy | ±0.003 A (A < 0.600) |
| Cuvette Compatibility | 16 mm round, 10/20/50 mm square (auto-recognized) |
| Data Storage | 1000 test results + 4 MB for spectral/dynamic data (e.g., 100 scans, 400 kinetics curves) |
| Interfaces | 1× USB-A, 1× USB-B, 1× RS232 |
| Compliance | DIN, US EPA certified methods |
| Power | 100–240 V~, 50–60 Hz |
| Operating Temperature | +10 °C to +35 °C |
| Dimensions | 404 × 197 × 314 mm |
| Weight | ~3.7 kg (without battery) |
| Brand | Hach |
|---|---|
| Origin | USA |
| Model | DR800 Series (DR820/DR850/DR890) |
| Instrument Type | Portable/Handheld Spectrophotometric Water Quality Analyzer |
| Detection Capability | Multi-parameter (Colorimetric Analysis via Predefined Methods) |
| Wavelength Range (DR890) | 420, 520, 560, 610 nm |
| Wavelength Accuracy | ±1 nm |
| Photometric Range | 0–2.0 Absorbance Units (A) |
| Wavelength Selection | Automatic |
| Readout Modes | % Transmittance, Absorbance, Concentration |
| Data Storage Capacity | 99 Measurement Records |
| Power Supply | 4 × AA Alkaline Batteries |
| Weight | 470 g |
| Operating Environment | 0–50 °C, ≤90% RH (non-condensing) |
| Connectivity | IR Interface (via optional RS232 Data Transfer Adapter) |
| Compliance | Designed for field use in accordance with EPA-approved colorimetric methods and ASTM D5116/D5257 practices for portable water analysis |
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