Water Quality Analysis
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| Brand | Zealquest |
|---|---|
| Origin | Netherlands |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Imported |
| Model | WISP Station |
| Measurement Principle | Hyperspectral reflectance measurement in visible and near-infrared (350–900 nm) with 4.6 nm spectral resolution |
| Spectral Range | 220–1000 nm |
| Measurable Parameters | Surface reflectance, water color, chlorophyll-a (phytoplankton), phycocyanin (cyanobacteria), algal bloom presence, Secchi depth/turbidity, total suspended matter (TSM), and diffuse attenuation coefficient (Kd) |
| Spectral Resolution | 4.65 nm FWHM |
| Grating | 300 lines/mm, blaze wavelength 300 nm |
| Slit Width | 100 µm |
| Stray Light | < 0.2% |
| Environmental Rating | IP67 enclosure with integrated temperature & humidity logging |
| Data Transmission | Cellular (LTE-M/NB-IoT) to WISPcloud platform |
| Power Supply | Solar panel + rechargeable LiFePO₄ battery |
| Default Sampling Interval | 15 min (configurable down to 2 min) |
| Compliance | Designed for ISO 17025-aligned field calibration workflows |
| Brand | Huake Instrument |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | ZFSC-I |
| Price Range | USD 70,000–100,000 (FOB) |
| Instrument Type | Online Water Quality Analyzer |
| Measured Parameter | Dissolved Hydrogen |
| Display Resolution | 0.01 µg/L |
| Measurement Range | 0–10 µg/L and 0–100 µg/L |
| Accuracy | ±3% FS or ±0.5 µg/L (whichever is greater) |
| Response Time (T90) | 5 s |
| Temperature Compensation Range | 5.0–45.0 °C (manual/automatic) |
| Sample Temp. Range | 5.0–45.0 °C |
| Flow Rate | 50–350 mL/min |
| Max. Suspended Particle Size | ≤5 µm (no colloids or oils) |
| Ambient Temp. | 5.0–45.0 °C |
| Humidity | ≤90% RH (non-condensing) |
| Power Supply | AC 100–240 V, 50–60 Hz |
| Max. Power Consumption | ≤500 W |
| Insulation Strength | 1500 VAC for 1 min |
| Brand | Easysensor |
|---|---|
| Model | ZG-ST5200 |
| Origin | Jiangsu, China |
| Instrument Type | Online Water Quality Analyzer |
| Compliance | Designed for ASTM D3867, ISO 15681-2, and USP <643> compliant nutrient measurement workflows |
| Detection Principles | Spectrophotometry (NH₃-N: Fluorometric), Flow Injection Analysis (FIA) with segmented microfluidics |
| Power Supply | 12–24 V DC |
| Operating Temperature | 0–40 °C |
| Depth Rating | Up to 10 m (IP68 housing) |
| Data Output | RS485/Modbus RTU, SD card local storage (up to 1 year @ 15-min intervals), optional 4G/LTE telemetry |
| Calibration | Auto-zero and multi-point standard calibration with onboard reagent reservoirs (≥30 days operation per cartridge) |
| Brand | Zhiyunda |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | ZYD-HF |
| Instrument Type | Portable |
| Detection Principle | Photometric Method (Colorimetric Absorption) |
| Detectable Metals/Analytes | Dual- and Multi-parameter (Fe, As, Mn, Cd, Cr(VI), Pb, etc.) |
| Detection Time | ≤15 min per parameter |
| Accuracy | Relative Error ≤ ±10% |
| Precision | Relative Standard Deviation (RSD) ≤ 5% |
| Resolution | 0.01 mg/L |
| Power Supply | AAA Batteries |
| Interface | USB |
| Brand | Zhochi |
|---|---|
| Origin | Zhejiang, China |
| Model | AOX-3 |
| Measurement Principle | High-Temperature Combustion Coupled with Coulometric Titration |
| Quantification Range | 5–1000 mg sample mass |
| Accuracy | ±1% |
| Repeatability | ≤1% RSD |
| Detection Limit | 0.8–1000 µg/L (as AOX) |
| Resolution | 0.01 µg |
| Max Operating Temperature | 1150 °C |
| Temperature Uniformity | ±1 °C |
| Heating Rate | Adjustable up to 50 °C/min |
| Furnace Chamber Dimensions | Ø40 × 300 mm |
| Power Supply | 220 V, 50 Hz, 1.5 kW |
| Net Weight | 26 kg |
| Compliance | HJ/T 83–2001, ISO 9562:1989, GB/T 15959–1995, GB 8978–1996, GB 3544–2008 |
| [Brand | Zhochi |
|---|---|
| Origin | Zhejiang, China |
| Model | AOX-3 |
| Detection Principle | High-Temperature Combustion Coupled with Coulometric Titration or Ion Chromatography |
| Temperature Range | 100–1150 °C |
| Max. Temp. Stability | ±1 °C |
| 炉 Chamber Dimensions | Ø40 × 300 mm |
| Power Supply | 220 V, 50 Hz |
| Rated Power | 1.5 kW |
| Sample Mass Range | 5–1000 mg |
| Detection Range | 0.8–1000 µg/L |
| LOD | 0.8 µg/L |
| Accuracy | ±1% |
| Repeatability | ≤1% |
| Resolution | 0.01 µg |
| Avg. Analysis Time (combustion only) | 3–10 min |
| Gas Requirements | O₂ ≥99.6% (99.999% recommended) |
| Compliance | HJ/T 83–2001, ISO 9562:1989, GB/T 15959–1995, GB 8978–1996, GB 3544–2008] |
| [Brand | Zhuchi |
|---|---|
| Origin | Zhejiang, China |
| Model | AOX-3 |
| Detection Principle | High-Temperature Combustion Coupled with Microcoulometric Titration |
| Measurement Range | 0.8–1000 µg/L |
| Accuracy | ±1% |
| Repeatability | ≤1% RSD |
| Detection Limit | 0.8 µg/L |
| Resolution | 0.01 µg |
| Max Combustion Temperature | 1150 °C |
| Furnace Temp Control Stability | ±1 °C |
| Sample Introduction | Nitrogen-Pressurized Column Adsorption |
| Compatible Detection Systems | Microcoulometer or Ion Chromatograph |
| Power Supply | 220 V, 50 Hz, 1.5 kW |
| Dimensions (W×D×H) | 345 × 360 × 660 mm |
| Net Weight | 26 kg] |
| [Brand | Zhuchi |
|---|---|
| Origin | Zhejiang, China |
| Model | AOX-3 |
| Detection Principle | High-Temperature Combustion Coupled with Coulometric Titration or Ion Chromatography |
| Detection Range | 0.8 µg/L – 1000 µg/L |
| Accuracy | ±1% |
| Repeatability | ≤1% RSD |
| Detection Limit | 0.8 µg/L |
| Resolution | 0.01 µg |
| Max Operating Temperature | 1150 °C |
| Temperature Stability | ±1 °C |
| Furnace Chamber Dimensions | Ø40 × 300 mm |
| Power Supply | 220 V, 50 Hz, 1.5 kW |
| Net Weight | 26 kg |
| Compliance | HJ/T 83–2001, ISO 9562:1989, GB/T 15959–1995, GB 8978–1996, GB 3544–2008] |
| Key | Principle: High-Temperature Combustion + Microcoulometric Titration |
|---|---|
| Range | 0.8–1000 µg/L |
| Accuracy | ±1% |
| Repeatability | ≤1% |
| LOD | 0.8 µg/L |
| Resolution | 0.01 µg |
| Max Temp | 1150 °C |
| Temp Stability | ±1 °C |
| Furnace Zone | 200 mm |
| Power | 1.5 kW, 220 V/50 Hz |
| Dimensions | 345×360×660 mm |
| Weight | 26 kg |
| Compliance | HJ/T 83–2001, ISO 9562:1989, GB/T 15959–1995 |
| Brand | Zhuochi |
|---|---|
| Origin | Zhejiang, China |
| Model | AOX-1000 |
| Measurement Principle | Combustion-Coulometric Titration |
| Measurement Range | 5–1000 µg/L (as Cl⁻) |
| Accuracy | ±1% |
| Repeatability (RSD) | ≤1% |
| Detection Limit | 0.8–1000 µg/L |
| Resolution | 0.01 µg |
| Compliance | Designed to meet ISO 9562 and EPA Method 1650 requirements for AOX determination |
| Brand | Zhuochi |
|---|---|
| Origin | Zhejiang, China |
| Manufacturer Type | Authorized Distributor |
| Country of Manufacture | China |
| Model | AOX-3 |
| Price | USD 4,200 (FOB Zhejiang) |
| Measurement Principle | Combustion–Microcoulometric Titration |
| Measurement Range | 0.8–1000 µg/L as Cl⁻ |
| Accuracy | ±<5% (vs. certified reference materials) |
| Repeatability (RSD) | <5% at ≥10 µg/L |
| Limit of Detection (LOD) | 0.8 µg/L as Cl⁻ |
| Resolution | 0.1 µg/L (digital display) |
| Brand | Zhuochi |
|---|---|
| Origin | Zhejiang, China |
| Model | AOX-3 |
| Measurement Principle | Combustion–Coulometric Titration |
| Measurement Range | 0.8–1000 µg/L |
| Accuracy | <5% |
| Repeatability | <5% |
| Limit of Detection (LOD) | 0.8 µg/L |
| Resolution | 0.8 µg/L |
| Compliance | HJ/T 83–2001, ISO 9562:1989, GB/T 15959–1995 |
| Brand | Zhuochi |
|---|---|
| Origin | Zhejiang, China |
| Model | AOX-3 |
| Detection Principle | High-Temperature Combustion–Microcoulometric Titration |
| Measurement Range | 0.8–1000 µg/L |
| Accuracy | ±1% |
| Repeatability | ≤1% RSD |
| Detection Limit | 0.8 µg/L |
| Resolution | 0.01 µg |
| Combustion Temperature | Up to 1150 °C |
| Furnace Temperature Stability | ±1 °C |
| Heating Rate | Adjustable up to 50 °C/min |
| Furnace Chamber Dimensions | Ø40 × 300 mm |
| Power Supply | 220 V, 50 Hz, 1.5 kW |
| Net Weight | 26 kg |
| Compliance | HJ/T 83–2001, ISO 9562:1989, GB/T 15959–1995, GB 8978–1996, GB 3544–2008 |
| Brand | Zhuochi |
|---|---|
| Origin | Zhejiang, China |
| Model | AOX-3 |
| Detection Principle | High-Temperature Combustion Coupled with Coulometric Titration |
| Measurement Range | 5–1000 mg sample mass |
| Accuracy | ±1% |
| Repeatability | ≤1% RSD |
| Detection Limit | 0.8–1000 µg/L |
| Resolution | 0.01 µg |
| Max Operating Temperature | 1150 °C |
| Temperature Stability | ±1 °C |
| Heating Rate | Up to 50 °C/min (adjustable) |
| Furnace Chamber | φ40 × 300 mm |
| Power Supply | 220 V, 50 Hz, 1.5 kW |
| Net Weight | 26 kg |
| Compliance | HJ/T 83–2001, ISO 9562:1989, GB/T 15959–1995, GB 8978–1996, GB 3544–2008 |
| Brand | Zhuochi |
|---|---|
| Origin | Zhejiang, China |
| Model | AOX-3 |
| Detection Principle | High-Temperature Combustion Coupled with Coulometric Titration or Ion Chromatography |
| Detection Range | 0.8 µg/L – 1000 µg/L |
| Accuracy | ±1% |
| Repeatability | ≤1% RSD |
| LOD | 0.8 µg/L |
| Resolution | 0.01 µg |
| Max Operating Temperature | 1150 °C |
| Temperature Stability | ±1 °C |
| Furnace Chamber Dimensions | Ø40 × 300 mm |
| Power Supply | 220 V, 50 Hz, 1.5 kW |
| Net Weight | 26 kg |
| Compliance | HJ/T 83–2001, ISO 9562:1989, GB/T 15959–1995, GB 8978–1996, GB 3544–2008 |
| Brand | Zhuochi |
|---|---|
| Origin | Zhejiang, China |
| Model | AOX-3 |
| Measurement Principle | High-Temperature Combustion Coupled with Coulometric Titration |
| Measurement Range | 5–1000 mg sample mass |
| Detection Range | 0.8 µg/L – 1000 µg/L |
| Accuracy | ±1% |
| Repeatability | ≤1% RSD |
| Detection Limit | 0.8 µg/L |
| Resolution | 0.01 µg |
| Max Operating Temperature | 1150 °C |
| Temperature Stability | ±1 °C |
| Heating Rate | Up to 50 °C/min (adjustable) |
| Furnace Chamber | φ40 × 300 mm |
| Power Supply | 220 V, 50 Hz, 1.5 kW |
| Net Weight | 26 kg |
| Compliance | HJ/T 83–2001, ISO 9562:1989, GB/T 15959–1995, GB 8978–1996, GB 3544–2008 |
| Brand | Zhuochi |
|---|---|
| Origin | Zhejiang, China |
| Model | AOX-3 |
| Detection Principle | High-Temperature Combustion Coupled with Microcoulometric Titration |
| Detection Range | 0.8–1000 µg/L |
| Accuracy | ±1% |
| Repeatability | ≤1% RSD |
| LOD | 0.8 µg/L |
| Resolution | 0.01 µg |
| Max Combustion Temperature | 1150 °C |
| Furnace Temp Control Stability | ±1 °C |
| Heating Rate | Adjustable up to 50 °C/min |
| Furnace Chamber | φ40 × 300 mm |
| Power Supply | 220 V, 50 Hz, 1.5 kW |
| Net Weight | 26 kg |
| Dimensions (W×D×H) | 345 × 360 × 660 mm |
| Brand | Zhuochi |
|---|---|
| Model | AOX-3 Standard |
| Origin | Zhejiang, China |
| Instrument Type | Laboratory Water Quality Analyzer |
| Detection Principle | High-Temperature Catalytic Combustion Coupled with Ion Chromatography or Microcoulometric Detection |
| Measurement Range | 0.8 µg/L to 1000 µg/L |
| Combustion Temperature | Up to 1150 °C |
| Sample Introduction | Nitrogen-pressurized Column Adsorption (Activated Carbon Cartridge) |
| Sample Mass | 5–1000 mg |
| Analysis Time (Combustion & Detection Cycle) | 3–10 min (excluding sample pre-concentration) |
| Carrier Gas | Oxygen ≥99.6% (99.999% recommended) |
| Sample Boat | Modified Quartz Boat for Direct Injection |
| Compliance | HJ/T 83–2001, ISO 9562:1989, GB/T 15959–1995 |
| Brand | Zhuochi |
|---|---|
| Origin | Zhejiang, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | AOX-3 |
| Price | USD 3,950 (FOB) |
| Detection Principle | High-Temperature Combustion Coupled with Microcoulometric Titration or Ion Chromatography |
| Detection Range | 0.8–1000 µg/L (as Cl⁻ equivalent) |
| Accuracy | ±1% |
| Repeatability (RSD) | ≤1% |
| Detection Limit | 0.8 µg/L |
| Resolution | 0.01 µg |
| Max Combustion Temperature | 1150 °C |
| Temperature Control Stability | ±1 °C |
| Heating Rate | Adjustable up to 50 °C/min |
| Furnace Chamber Dimensions | Ø40 × 300 mm |
| Power Supply | 220 V, 50 Hz, 1.5 kW |
| Net Weight | 26 kg |
| Brand | Zhuochi |
|---|---|
| Origin | Zhejiang, China |
| Model | AOX-3 Standard |
| Measurement Principle | High-Temperature Combustion Coupled with Coulometric Titration |
| Detection Range | 0.8 μg/L to 1000 μg/L |
| Accuracy | <1% |
| Repeatability | <10% |
| Limit of Detection (LOD) | 0.1 μg |
| Resolution | 0.01 μg |
| Max Combustion Temperature | 1150 °C |
| Sample Introduction | Pressurized Nitrogen-Driven Column Adsorption (5–1000 mg) |
| Analysis Time (Combustion & Detection) | 3–10 min (excluding pre-concentration) |
| Required Gases | O₂ ≥99.6% (99.999% recommended), N₂ for adsorption |
| Brand | Zhuochi |
|---|---|
| Origin | Zhejiang, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | AOX-3-ZC |
| Price | USD 4,200 (approx.) |
| Measurement Principle | Combustion-Coulometric Titration |
| Measurement Range | 5–1000 µg AOX per sample |
| Accuracy | ±1% (relative to certified reference material) |
| Repeatability (RSD) | ≤1% |
| Detection Limit | 0.8–1000 µg/L (sample-dependent, based on 100 mL preconcentration volume) |
| Resolution | 0.01 µg (coulometric current integration) |
| Brand | Zhuochi |
|---|---|
| Origin | Zhejiang, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | AOX-S |
| Pricing | Upon Request |
| Measurement Principle | Combustion–Microcoulometric Titration |
| Furnace Temperature Range | 500–1000 °C |
| Temperature Accuracy | ±1% ±5 °C |
| Measurement Accuracy | <5% |
| Repeatability | <5% |
| Limit of Detection (LOD) | 0.1 µg/L (as Cl⁻ equivalent) |
| Resolution | Not specified |
| Brand | Zhuochi |
|---|---|
| Origin | Zhejiang, China |
| Model | AOX-S Zhuochi |
| Measurement Principle | Combustion-Microcoulometric Titration |
| Temperature Range | 500–1000 °C (±1 % ±5 °C) |
| Accuracy | <5 % |
| Repeatability | <5 % |
| Limit of Detection | 0.1 µg/L |
| Compliance | HJ 1214–2021 (China EPA Standard for Water Quality — Determination of Adsorbable Organic Halogens by Microcoulometry) |
| Brand | Zhuochi |
|---|---|
| Origin | Zhejiang, China |
| Model | AOX-S |
| Measurement Principle | Combustion–Microcoulometric Titration |
| Temperature Range | 500–1000 °C (±1% ±5 °C) |
| Accuracy | <5% |
| Repeatability | <5% |
| Limit of Detection (LOD) | 0.1 µg/L |
| Compliance | Designed per HJ 1214–2021 (China National Standard for AOX in Water) |
| Brand | Zhuochi |
|---|---|
| Model | AOX-WK |
| Detection Principle | Microcoulometric Titration after High-Temperature Combustion |
| Measurement Range | Cl: 0.5–5000 mg/L |
| C | 0.2–50000 mg/L |
| N | 0.5–5000 mg/L |
| Temperature Control | 500–1000 °C, ±1% ±5 °C |
| Repeatability | ≤5% (≥10 mg/L), ≤10% (1–10 mg/L), ≤50% (<1 mg/L) |
| Generator Current | ±2 mA |
| Amplifier Output Voltage | ±30 V |
| Bias Voltage Range | 0–500 mV (continuously adjustable) |
| Power Supply | AC 220 V ±10%, 50 Hz, 3000 W |
| Brand | Zhuochi |
|---|---|
| Origin | Zhejiang, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | AOX-WK |
| Measurement Principle | Combustion–Microcoulometric Titration |
| Temperature Range | 500 °C to 1000 °C |
| Temperature Accuracy | ±1% ±5 °C |
| Overall Accuracy | <5% |
| Repeatability | <5% |
| Limit of Detection (LOD) | 0.1 µg/L |
| Compliance | HJ 1214–2021 |
| Brand | Zhuochi |
|---|---|
| Model | AOX-WK |
| Standard Compliance | GB/T 34845-2017 |
| Measurement Principle | Microcoulometric Titration after High-Temperature Combustion |
| Detection Target | Adsorbable Organic Halides (AOX), expressed as Cl⁻ |
| Carbon Range | 0.2–5000 mg/L |
| Chlorine Range | 0.5–5000 mg/L |
| Nitrogen Range | 0.5–5000 mg/L |
| Combustion Temperature | 500–1000 °C (±1% ±5 °C) |
| Generator Current | ±2 mA |
| Amplifier Output Voltage | ±30 V |
| Bias Voltage Range | 0–500 mV (continuously adjustable) |
| Repeatability | ≤50% (at <1.0 mg/L), ≤10% (1.0–10 mg/L), ≤5% (>10 mg/L) |
| Power Supply | AC 220 V ±10%, 50 Hz ±0.5 Hz |
| Rated Power | 3000 W |
| Origin | Zhejiang, China |
| Configuration | Host unit, high-temperature combustion furnace, autosampler (optional), quartz pyrolysis tube, titration cell, magnetic stirrer, RS-232 interface for PC connection |
| Brand | Zhuochi |
|---|---|
| Origin | Zhejiang, China |
| Model | AOX-WK-3 |
| Measurement Principle | Combustion–Microcoulometric Titration |
| Measuring Range | 0–2 mg/kg |
| Limit of Detection (LOD) | 2 mg/kg |
| Repeatability | ≤10% RSD at sample concentration ≤2 mg/L |
| Compliance | GB/T 34845–2017, GB/T 22904–2008 |
| Instrument Type | Environmental Halogen Analyzer for Water and Pulp/Paper Matrices |
| Brand | Zhuochi |
|---|---|
| Origin | Zhejiang, China |
| Model | AOX-WK-3 |
| Measurement Principle | Combustion-Microcoulometric Titration |
| Detection Range | 0.02 mg/kg – 2 mg/kg |
| Accuracy | ±1 µg Cl |
| Repeatability | ≤10% RSD at sample concentration <2 mg/kg |
| Limit of Detection (LOD) | 0.028 mg/L |
| Resolution | 1 µg Cl |
| Compliance | GB/T 34845-2017, GB/T 22904-2008, GB/T 35613-2017, GB/T 39084-2020, GB/T 35611-2017, GB/T 41533-2022 |
| Brand | Zhuochi |
|---|---|
| Origin | Zhejiang, China |
| Model | AOX-WK-3 Microcoulometric |
| Compliance | GB/T 34845–2017, GB/T 22904–2008 |
| Configuration | Complete AOX determination system with combustion furnace, microcoulometric titration unit, adsorption module, and dedicated software |