Jiada Xiaotianshe GDYS-101SV Sulfide Analyzer
| Brand | Jiada Xiaotianshe |
|---|---|
| Origin | Jilin, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | GDYS-101SV |
| Pricing | Available Upon Request |
| Detection Limit | 0.02 mg/L |
| Measurement Range | 0.00–1.00 mg/L |
| Accuracy | ±5% |
| Compliance | GB/T 5750.5–2006 |
| Analysis Time | ≤10 minutes per sample |
| Reagent Format | Single-use, pre-packaged test kits |
Overview
The Jiada Xiaotianshe GDYS-101SV Sulfide Analyzer is a field-deployable, colorimetric water quality analyzer engineered for rapid, quantitative determination of dissolved sulfide (S²⁻) in aqueous matrices. It operates on the principle of methylene blue spectrophotometry—where sulfide ions react with N,N-dimethyl-p-phenylenediamine sulfate and ferric chloride under acidic conditions to form a stable, quantifiable blue chromophore with maximum absorbance at 670 nm. This method is rigorously standardized in GB/T 5750.5–2006, the Chinese national standard for drinking water quality inspection, ensuring regulatory alignment for municipal water utilities, environmental monitoring stations, and third-party testing laboratories operating within China’s compliance framework.
Key Features
- Field-ready design with integrated LED-based photometric detection system—no external spectrophotometer required.
- Pre-calibrated optical path and temperature-compensated measurement algorithm to minimize drift across ambient conditions (10–35 °C).
- Single-use, factory-sealed reagent kits eliminate manual reagent preparation, reducing operator error and cross-contamination risk.
- On-device digital display with automatic concentration calculation—results output directly in mg/L as S²⁻.
- Battery-powered operation (rechargeable Li-ion, >8 hours continuous use) supports extended deployment in remote sampling locations without AC access.
- Robust IP65-rated enclosure suitable for outdoor use in humid or dusty environments typical of wastewater treatment plants and riverbank monitoring sites.
Sample Compatibility & Compliance
The GDYS-101SV is validated for direct analysis of raw and filtered samples from potable water, surface water (rivers, lakes, reservoirs), groundwater, and municipal/industrial wastewater. Sample turbidity up to 50 NTU does not interfere with measurement integrity when using the built-in filtration step (0.45 µm membrane included in kit). All analytical procedures conform to GB/T 5750.5–2006 Section 9.1 (“Determination of sulfide by methylene blue spectrophotometry”), including mandatory blank correction, calibration verification with certified reference material (CRM), and documented analyst qualification requirements. While not certified to ISO/IEC 17025 or EPA Method 376.1, its performance profile meets the minimum technical criteria for screening-level compliance under China’s “Environmental Monitoring Technical Specifications for Surface Water and Wastewater” (HJ/T 91–2002).
Software & Data Management
The instrument features embedded firmware supporting data logging for up to 500 test records, each timestamped and tagged with batch ID, operator code, and calibration status. Data export is available via micro-USB to CSV format for integration into LIMS or QA/QC reporting systems. Audit trail functionality records all calibration events, zero adjustments, and firmware updates—supporting basic GLP documentation needs. Though lacking cloud connectivity or FDA 21 CFR Part 11-compliant electronic signatures, the device satisfies internal record-keeping requirements for routine environmental surveillance where formal electronic validation is not mandated.
Applications
- Routine monitoring of sulfide in drinking water distribution networks to verify odor control efficacy and prevent H₂S-related corrosion.
- Field screening at wastewater treatment plants—especially in anaerobic digesters, septic tanks, and sewer force mains—where sulfide accumulation poses operational and safety hazards.
- Regulatory compliance sampling for environmental impact assessments (EIAs) and discharge permit reporting under China’s “Standards for Pollutants Discharge from Urban Wastewater Treatment Plants” (GB 18918–2002).
- Emergency response testing following industrial spills or pipeline ruptures involving sulfur-containing compounds.
- Educational use in university environmental science laboratories for teaching standardized wet-chemistry analytical methods.
FAQ
What sample volume is required for analysis?
A 10.0 mL aliquot of well-mixed, unacidified sample is required. For highly turbid or particulate-laden samples, optional centrifugation or 0.45 µm filtration is recommended prior to analysis.
Can the GDYS-101SV measure sulfide in seawater?
No—high chloride ion concentration (>10,000 mg/L) interferes with the methylene blue reaction. The instrument is validated only for freshwater and low-salinity wastewater matrices.
How often must the instrument be calibrated?
A two-point calibration (zero and mid-range standard) is required before each daily batch of samples, or after every 10 tests—whichever occurs first—as specified in GB/T 5750.5–2006.
Are reagent kits traceable to national standards?
Yes—each lot of GDYS-101SV reagent kits is accompanied by a Certificate of Analysis referencing GBW(E)080272 certified sulfide reference material (China National Institute of Metrology).
Is maintenance training provided with purchase?
Jiada Xiaotianshe offers on-site or virtual technician training covering optical verification, battery management, firmware updates, and troubleshooting common interferences (e.g., nitrite, thiosulfate, suspended solids).
