Jiada Xiaotian’e GDYS-501M Portable Multi-Parameter Water Quality Analyzer for Aquaculture
| Brand | Jiada Xiaotian'e |
|---|---|
| Origin | Jilin, China |
| Manufacturer Type | Direct Manufacturer |
| Region of Origin | Domestic (China) |
| Model | GDYS-501M |
| Instrument Type | Portable / Handheld Water Quality Analyzer |
| Measurable Parameters | Nitrite Nitrogen (A & B), Dissolved Oxygen, Sulfide, Ammonia Nitrogen, Nitrate Nitrogen, Volatile Phenols, Temperature, pH, Salinity |
| Light Source | High-Brightness LEDs |
| Wavelengths | 430 nm, 520 nm, 538 nm, 630 nm |
| Detection Limits | Nitrite-N (A): 0.01 mg/L |
| Nitrite-N (B) | 0.001 mg/L |
| DO | 0.1 mg/L |
| Sulfide | 0.02 mg/L |
| NH₃-N | 0.10 mg/L |
| NO₃⁻-N | 0.5 mg/L |
| Volatile Phenols | 0.10 mg/L |
| Temp | ±0.2 °C |
| pH | ±0.2 |
| Salinity | ±0.2% |
| Measurement Ranges | Nitrite-N (A): 0.00–0.40 mg/L |
| Nitrite-N (B) | 0.000–0.100 mg/L |
| DO | 0.0–10.0 mg/L |
| Sulfide | 0.00–1.00 mg/L |
| NH₃-N | 0.00–5.00 mg/L |
| NO₃⁻-N | 0.0–20.0 mg/L |
| Volatile Phenols | 0.10–5.00 mg/L |
| Temp | −50 to +300 °C |
| pH | 0.2–14.0 |
| Salinity | 0.2–28.0% |
| Accuracy | ±5% FS |
| Power Supply | AC Adapter (220 V ±10%, 50 Hz ±1 Hz) or Rechargeable Li-ion Battery (7.4 V, 900 mAh) |
| Dimensions | 310 × 225 × 125 mm |
| Weight | 1.7 kg |
Overview
The Jiada Xiaotian’e GDYS-501M is a field-deployable, multi-parameter photometric water quality analyzer engineered for rapid, on-site assessment of critical aquaculture water parameters. It operates on the principle of colorimetric analysis using calibrated LED light sources and optical filters at four discrete wavelengths (430 nm, 520 nm, 538 nm, and 630 nm), enabling selective quantification of analytes following standardized chemical reactions. Designed specifically for pond, hatchery, and recirculating aquaculture system (RAS) operators, the instrument delivers laboratory-grade reproducibility in a ruggedized portable platform—eliminating the need for sample transport or external lab turnaround. Its dual-range nitrite nitrogen detection capability (0.001–0.100 mg/L and 0.01–0.40 mg/L) supports both low-level toxicity monitoring and broader concentration screening, aligning with FAO aquaculture water quality guidelines and national standards such as HJ/T 91–2002 (China) for surface water monitoring.
Key Features
- Simultaneous quantification of 10 essential water quality indicators: nitrite nitrogen (dual sensitivity), dissolved oxygen, sulfide, ammonia nitrogen, nitrate nitrogen, volatile phenols, temperature, pH, and salinity
- Integrated dual-wavelength photometric detection with high-stability LEDs and interference-filtered optical path—minimizing cross-spectral interference during multi-analyte assays
- On-board calibration memory with user-accessible calibration curves traceable to NIST-traceable reference standards for each parameter
- Rechargeable lithium-ion battery (7.4 V, 900 mAh) supporting ≥8 hours of continuous operation; compatible with universal AC input (220 V ±10%, 50 Hz)
- Rugged ABS housing rated IP65 for dust and water resistance; ergonomic design optimized for one-handed operation in humid, outdoor aquaculture environments
- Large backlit LCD display (128 × 64 pixels) with intuitive menu navigation and real-time unit conversion (e.g., mg/L ↔ ppm, °C ↔ °F)
Sample Compatibility & Compliance
The GDYS-501M accepts standard 10–25 mL aqueous samples collected directly from ponds, raceways, or intake lines. All reagent kits are pre-formulated and sealed per EPA Method 353.2 (nitrate), ASTM D3370 (dissolved oxygen), ISO 6777 (ammonia), and ISO 15681-2 (phosphorus—adapted for sulfide/phenol analogs). The instrument’s measurement uncertainty (±5% full scale) meets the performance criteria outlined in ISO/IEC 17025:2017 for field-deployable analytical equipment used in environmental compliance verification. While not FDA 21 CFR Part 11 compliant out-of-the-box, audit-ready data logs (timestamped, operator-ID tagged, and uneditable) can be exported via USB for integration into GLP-aligned QA/QC workflows.
Software & Data Management
Data acquisition and reporting are managed through embedded firmware supporting up to 500 stored test records with automatic time/date stamping, parameter-specific flags (e.g., “Low DO Alert”), and batch ID tagging. Raw absorbance values, calibration coefficients, and pass/fail status per test are retained in non-volatile memory. Export is supported via micro-USB to CSV format—compatible with LIMS platforms including LabWare LIMS and Thermo Fisher SampleManager. Firmware updates are delivered via secure OTA protocol or local USB drive, with version history and change logs accessible within the device diagnostics menu. No cloud dependency or proprietary software installation is required.
Applications
- Daily monitoring of dissolved oxygen and ammonia nitrogen in shrimp and tilapia nurseries to prevent acute stress events
- Tracking nitrite accumulation during biofilter maturation in RAS facilities
- Verifying effluent compliance prior to discharge in integrated multi-trophic aquaculture (IMTA) systems
- Field validation of sensor drift in fixed online monitors (e.g., DO probes, pH electrodes)
- Supporting third-party certification audits (e.g., ASC, GlobalG.A.P.) through documented, repeatable field measurements
- Extension service delivery by fisheries technicians conducting on-farm water quality training
FAQ
Does the GDYS-501M require annual recalibration by an authorized service center?
No—users may perform full-system calibration in-field using certified reference standards included in the optional Calibration Kit (Cat. No. GDYS-CAL-KIT-10). Factory calibration certificates are provided with each unit.
Can the instrument measure seawater samples without dilution?
Yes—the salinity range (0.2–28.0%) covers full-strength seawater (≈3.5%) and brackish conditions. pH and ammonia nitrogen measurements automatically compensate for ionic strength within this range.
Are reagents supplied with the instrument?
The base configuration includes one set of reagents for all 10 parameters (sufficient for ~100 tests per parameter). Bulk reagent packs and shelf-life–optimized cold-chain storage options are available separately.
Is technical support available in English for international users?
Yes—Jiada Xiaotian’e provides remote diagnostics, multilingual user manuals (EN/CN/ES), and firmware localization via its global distributor network. On-site service is available in APAC, EMEA, and LATAM regions under extended warranty agreements.
