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| Brand | Dr-Water |
|---|---|
| Origin | Hunan, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | Dr-W690 |
| Detection Principle | Chlorophyll Fluorescence Method |
| Chlorophyll a Range | 0.01–500 µg/L |
| Cyanobacteria Range | 0–50 × 10⁶ cells/L |
| Detection Limit | 0.01 µg/L (Chl-a) / 1 × 10⁴ cells/L (Cyanobacteria) |
| Accuracy | ±5% FS |
| Resolution | 0.01 µg/L (Chl-a), 1 × 10⁴ cells/L (Cyanobacteria) |
| Measurement Time | 20 s |
| Display | 8-inch HD color TFT capacitive touchscreen |
| Sample Cell | Dedicated 10-mm square quartz cuvette |
| Data Storage | 1,000,000 records with timestamp, ID, and operator tag |
| Connectivity | USB 2.0 interface |
| Power Supply | AC 220 V ±10%, 50 Hz |
| Operating Environment | 5–40 °C, RH <85% non-condensing |
| Housing Material | Flame-retardant ABS with IP54-rated enclosure |
| Brand | DoctorWater |
|---|---|
| Origin | Hunan, China |
| Model | W600 |
| Detection Principle | Chlorophyll Fluorescence Method |
| Chlorophyll-a Range | 0.01–500 µg/L |
| Detection Limit | 0.01 µg/L |
| Cyanobacteria Range | 0–40 × 10⁶ cells/L |
| Resolution | 1 × 10⁴ cells/L (cyanobacteria), 0.01 µg/L (chlorophyll-a) |
| Accuracy | ±5% |
| Display | 8-inch IPS capacitive touchscreen (1024 × 768) |
| Operating System | Android-based embedded OS |
| Power | Rechargeable Li-ion battery + AC adapter |
| Data Storage | ≥10 million records |
| Connectivity | USB, Wi-Fi, Bluetooth, 4G |
| Compliance | Designed for field-deployable water quality monitoring per ISO 10260, ASTM D3921, and EPA Method 445.0 (fluorometric chlorophyll-a) |
| Brand | Water Doctor |
|---|---|
| Origin | Hunan, China |
| Model | Dr-W660 |
| Measurement Principle | In-situ Fluorescence Detection |
| Chlorophyll-a Range | 0.01–500 µg/L |
| Phycocyanin (Cyanobacteria) Range | 0–40 × 10⁶ cells/L |
| Detection Limit | 0.01 µg/L (Chl-a), 1 × 10⁴ cells/L (Cyanobacteria) |
| Resolution | 0.01 µg/L (Chl-a), 10⁴ cells/L (Cyanobacteria) |
| Accuracy | ±5% FS |
| Display | 5-inch HD color capacitive touchscreen |
| Power | Rechargeable Li-ion battery (≥30-day standby), AC adapter support |
| Data Storage | 1,000,000 records |
| Interface | USB 2.0 |
| Printer | Integrated thermal printer |
| Sample Cell | 10 mm square quartz cuvette |
| Housing Material | Corrosion-resistant ABS |
| Operating Temp | 5–40 °C |
| Relative Humidity | <85% RH (non-condensing) |
| Compliance | Designed for field-deployable compliance with ISO 10260 (water quality — determination of chlorophyll-a by fluorescence), ASTM D7212-19 (standard test method for chlorophyll-a in water by fluorometric measurement) |
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