Jilin University Little Swan
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| Brand | Jilin University Little Swan |
|---|---|
| Origin | Changchun, Jilin, China |
| Model | GDYS-S7000 |
| Instrument Type | Portable Colorimetric Water Quality Analyzer |
| Dimensions | 85 mm × 200 mm × 95 mm |
| Display | Full-color TFT Touchscreen |
| Power | Rechargeable Lithium-ion Battery |
| Weight | <1000 g |
| Detection Parameters | Free Chlorine, Total Chlorine, Chlorine Dioxide, Ozone, Formaldehyde, Chlorite, Available Chlorine |
| Calibration | Pre-stored Multi-point Calibration Curves |
| Connectivity | Bluetooth-enabled for Thermal Printer Integration |
| Sample Cell | Optimized Long-Path Cuvette Design |
| Reagents | Pre-formulated, Single-use Solid/Powdered Reagent Kits |
| Brand | Jilin University & Little Swan |
|---|---|
| Model | GDYS-104SI |
| Origin | Shanghai, China |
| Instrument Type | Benchtop Photometric Analyzer for Bromate (BrO₃⁻) |
| Measurement Principle | LED-based Absorption Spectrophotometry at 528 nm |
| Detection Limit | 0.004 mg/L |
| Range | 0.000–0.040 mg/L |
| Accuracy | ±0.002 mg/L |
| Repeatability | ±0.002 mg/L |
| Response Time | <20 min per sample |
| Operating Temperature | 5–40 °C |
| Power Supply | AC 220 V ±22 V, 50 Hz ±1 Hz |
| Dimensions | 470 × 280 × 180 mm |
| Weight | 3.8 kg |
| Sample Throughput | Up to 8 samples per batch with integrated pre-concentration and filtration |
| Optical Path | Extended-path cuvette design for enhanced sensitivity |
| Data Interfaces | USB 2.0 and RS-232 |
| Compliance | Designed for routine QC in bottled water production per GB 8537–2018 and aligned with ISO 10523:2022 (water quality — determination of pH) and AOAC Official Method 2015.01 (bromate in drinking water) |
| Brand | Jilin University & Little Swan |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | GDYS-302S |
| Weight | 1.7 kg |
| Operating Temperature | 5–40 °C |
| Power Supply | AC 220 V ± 22 V, 50 Hz ± 1 Hz |
| Repeatability | ±5% |
| Accuracy (Measurement Error) | ±5% |
| Light Source | High-brightness LED |
| Wavelengths | 430 nm, 538 nm |
| Absorbance Range | 0.000–2.000 Abs |
| Absorbance Stability | ≤0.005 Abs/h |
| Detector | Integrated Photodiode Sensor |
| Sample Cell | Cylindrical Glass Cuvette, 16 mm Inner Diameter |
| Display | 4.7-inch TFT LCD with Chinese UI |
| Data Interface | USB + RS-232 (COM) |
| Battery | Rechargeable Li-ion, 7.4 V / 900 mAh |
| Power Consumption | 5 W |
| Brand | Jilin University & Little Swan |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | GDYS-601SB |
| Quotation | Upon Request |
| Operating Temperature | 0 °C to 40 °C |
| Power Supply | 9 V DC (rechargeable Li-ion battery included) |
| Response Time | 1 s |
| Photometric Stability | ±0.005 Abs/h |
| Optical Wavelengths | 520 nm and 538 nm |
| Absorbance Range | 0.000–2.000 Abs |
| Light Source | High-brightness LED (rated lifetime >100,000 h) |
| Measurement Chamber | Integrated cylindrical sealed cuvette |
| Calibration | Factory-preloaded calibration curves for all target analytes |
| Brand | Jilin University & Little Swan |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Regional Classification | Domestic (China) |
| Model | GDYS-800M |
| Instrument Type | Portable / Handheld Water Quality Analyzer |
| Detection Principle | Spectrophotometry |
| Measurable Parameters | Free Chlorine, Chlorine Dioxide, COD (Permanganate Index), Total Hardness (as CaCO₃), Color, Turbidity, and 32 additional routine water quality indicators |
| Measurement Ranges | Free Chlorine: 0–5 mg/L |
| Total Hardness (as CaCO₃) | 0–500 mg/L |
| Photometric Stability | ≤0.005 Abs/h |
| Wavelength Options | 380, 430, 470, 520, 538, 595, 630 nm (configurable per parameter set) |
| Light Source | High-brightness LED |
| Detector | Integrated Photodiode Sensor |
| Sample Cell | Cylindrical Glass Cuvettes and Standard Glass Cuvette (10 mm pathlength) |
| Operating Environment | 5–40 °C |
| Display | 12-inch Multi-touch LCD |
| Connectivity | Ethernet, USB 2.0, Wi-Fi 802.11 b/g/n |
| Power Supply | AC Adapter (100–240 V) + Rechargeable Li-ion Battery (≥8 h continuous operation) |
| Data Output | Built-in Thermal Printer, CSV Export, Cloud Sync via Secure HTTPS API |
| Brand | Jilin University & Little Swan |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | GDYS-501SC |
| Power Supply | 9 V DC (alkaline or rechargeable battery) |
| Operating Temperature | 0 °C to 40 °C |
| Optical Wavelengths | 520 nm and 538 nm |
| Photometric Range | 0.000–2.000 Abs |
| Photometric Stability | ±0.005 Abs/h |
| Measurement Principle | Fixed-wavelength colorimetry with integrated optical path |
| Sample Vessel | Cylindrical sealed cuvette (direct measurement post-reaction) |
| Preloaded Calibration Curves | Yes, factory-calibrated for target analytes |
| Reagent Format | Dry-powder or liquid-stabilized prepackaged reagents |
| Compliance | Designed to support ASTM D1292 (pH), ASTM D3867 (nitrite-N), ASTM D1688 (ammonia-N), ISO 5815-1 (dissolved oxygen), and GB/T 5750.5–2023 (Chinese national standards for drinking water quality) |