Chemical Oxygen Demand Analyzer
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| Brand | Zming Environmental Technology Co., Ltd. |
|---|---|
| Origin | Jiangsu, China |
| Model | HQ-5101 |
| Instrument Type | Portable |
| Measurement Principle | UV Absorption Spectrophotometry |
| Compliance | Designed for field-deployable water quality monitoring per ISO 7888 (ammonia nitrogen in water), ASTM D1426–22 (ammonia by direct Nesslerization or UV method), and aligned with EPA Method 350.1 (UV spectrophotometric determination of ammonia nitrogen) |
| Brand | Anjie |
|---|---|
| Origin | Shanghai, China |
| Model | AJ-5750 |
| Instrument Type | Laboratory Benchtop Analyzer |
| Measurement Principle | Rapid Digestion Method (Closed-Tube, Reflux-Based) |
| Measurement Range | 16–700 mg/L COD |
| Accuracy | ≤5% (vs. Certified Reference Materials) |
| Repeatability | RSD ≤2.0% |
| Analysis Time | 14 minutes per sample |
| Batch Capacity | ≥21 samples |
| Safety Design | Fully Enclosed Digestion Chamber with Spherical Condenser |
| Operational Alert | Real-Time Reagent Vacuum Loss Detection |
| Compliance Context | Designed to support ISO 6060, ASTM D1252–06 (Method B), and HJ 828–2017 (Chinese EPA Standard) |
| Brand | Anjie |
|---|---|
| Origin | Shanghai, China |
| Model | AJ5700 |
| Instrument Type | Laboratory Benchtop Analyzer |
| Measurement Principle | Rapid Digestion with Potassium Dichromate (Cr(VI)) Oxidation |
| Measurement Range | 0–700 mg/L COD<sub>cr</sub> |
| Accuracy | ≤5% (vs. certified reference materials) |
| Repeatability | RSD ≤2.0% |
| Cycle Time | <15 min per sample |
| Sample Capacity | ≥30 positions |
| Digestion Stations | ≥30 |
| Titration Stations | ≥2 |
| Reagent Dispensing Precision | ±0.2% |
| Safety Design | Negative-pressure enclosed chamber with fume containment |
| Waste Handling | Integrated废液 collection with overflow alarm |
| Connectivity | TCP/IP & Wi-Fi |
| Data Export Formats | PDF, Word, Excel, CSV, RTF, HTML |
| Brand | AOE |
|---|---|
| Origin | Shanghai, China |
| Model | WA655 |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | UV-Vis Absorption Spectrophotometry |
| Wavelength Range | 190–1100 nm |
| Wavelength Accuracy | ±0.5 nm |
| Photometric Accuracy | <0.5% T |
| Photometric Repeatability | <0.2% T |
| Stray Light | <0.05% T |
| Optical Stability | ±0.002 A/h |
| Detection Limits | TN: 0.1 mg/L, TP: 0.05 mg/L, NH₃-N: 0.01 mg/L, COD: 0.02 mg/L |
| Measurement Ranges | TN: 2–15,000 mg/L, TP: 1–10 mg/L, NH₃-N: 0.01–30 mg/L, COD: 0.02–100 mg/L |
| Measurement Error | TN < ±8%, TP < ±5%, NH₃-N < ±5%, COD < ±5% |
| Digestion Temperature Control | TN: 122 °C ±0.5 °C, TP: 120 °C ±0.5 °C, COD: 165 °C ±0.5 °C |
| Digestion Time | TN: 40 min, TP: 30 min, NH₃-N: 10 min, COD: 10 min |
| Digestion Mode | Sealed (TN, TP), Sealed or Open (NH₃-N, COD) |
| Sample Throughput | 16 samples per batch (TN/TP/COD), 20 samples per batch (NH₃-N), expandable |
| Display | 65K-color TFT LCD |
| Interface | USB |
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | AQ4001 |
| Pricing | Available Upon Request |
| Brand | BBE / bbe Moldaenke |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Online Analyzer |
| Measurement Principle | Potassium Dichromate Digestion Method (Online) |
| Wavelength | 600 nm (standard for Cr(VI)/Cr(III) absorbance ratio) |
| Measurement Range | 10–500 mg/L, 10–1000 mg/L, or 10–1500 mg/L (user-selectable range switching) |
| Accuracy | ≤ ±10% of reading |
| Repeatability | ≤ ±5% RSD |
| Limit of Detection (LOD) | 10 mg/L COD |
| Cycle Time | 30 minutes per analysis |
| Sample Volume per Cycle | 1.5–3 L |
| Compliance | Designed to meet ISO 6060 and EPA Method 410.4 requirements for online COD monitoring |
| Origin | Germany |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | Behr BSB 4A |
| Instrument Type | Laboratory Benchtop System |
| Measurement Principle | Dilution and Sealed Bottle Incubation (ISO 5851-1 / DIN EN 1899-1 compliant) |
| Wavelength | 610 ± 20 nm |
| Measurement Range | 10–5000 mg/L O₂ |
| Accuracy | ≤ ±10% |
| Repeatability | ≤ ±5% |
| Limit of Detection | 0.1 mg/L O₂ |
| Analysis Time | 20 min per sample (post-incubation measurement) |
| Batch Capacity | 15 or 30 samples simultaneously |
| Stirring Vessel Volume | 1 L (calibrated PTFE-coated stirring column) |
| Stirring Mechanism | Integrated magnetic stirrer |
| Valve System | PTFE three-way stopcock for dilution water supply and bottom degassing |
| Level Control | Semi-automatic horizontal closure with integrated rinse function |
| Weight | ~12 kg (excl. peristaltic pump) |
| Dimensions (W × D × H) | 26 × 35 × 75 cm |
| Origin | Germany |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | Behr PA-CSB |
| Instrument Type | Laboratory Benchtop Unit |
| Measurement Principle | Closed-Tube Colorimetric Oxidation (Dichromate Reflux Method per ISO 6060 / DIN 38409-H41) |
| Wavelength | 610 ± 20 nm |
| Measurement Range | 10–5000 mg/L COD |
| Accuracy | ≤ ±10% of reading |
| Repeatability | ≤ ±5% RSD |
| LOD | 0.1 mg/L |
| Digestion Time | 20 min |
| Batch Capacity | 15 or 30 samples (configurable via reaction block configuration) |
| Origin | Germany |
|---|---|
| Manufacturer Type | Distributor |
| Origin Category | Imported |
| Model | Behr COD |
| Instrument Type | Laboratory Benchtop |
| Measurement Principle | Closed-Reflex Digestion with Spectrophotometric Detection at 610 nm |
| Wavelength | 610 ± 20 nm |
| Range | 10–5000 mg/L COD |
| Accuracy | ≤ ±10% |
| Repeatability | ≤ ±5% |
| LOD | 0.1 mg/L |
| Digestion & Analysis Time | 20 min per batch |
| Batch Capacity | 6 or 12 samples |
| Compliance | ISO 6060, DIN 38409-H41, EN 15372 |
| Brand | Beiyu Technologies |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Model | CGC-182 / CGC-186 |
| Wavelength | 610 ± 20 nm |
| Measurement Range | 10–5000 mg/L |
| Accuracy | ≤ ±10% |
| Repeatability | ≤ ±5% |
| LOD | 4 mg/L |
| Analysis Time | 2 h per batch |
| Sample Throughput | 16 or 24 digestion positions |
| Brand | BEIYU TECHNOLOGIES |
|---|---|
| Origin | Shanghai, China |
| Model | CGC-699 |
| Measurement Principle | Spectrophotometric Detection after Rapid Digestion (HJ/T 399–2007) |
| Wavelengths | 440 nm & 600 nm |
| COD Range | 5–150 mg/L (low), 100–1000 mg/L (high) |
| Chloride Tolerance | <1000 mg/L |
| Sample Positions | 118 or 178 |
| Digestion Positions | 18 |
| Temperature Control | PID-regulated |
| Automation Level | Fully Integrated (sampling, reagent addition, digestion, cooling, colorimetry) |
| Compliance | HJ/T 399–2007 |
| Brand | Benteng |
|---|---|
| Origin | Jilin, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | BTB-1160 |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Rapid Digestion Spectrophotometry (per HJ/T 399–2007) |
| Detection Limit | 0.1 mg/L |
| Analysis Time | 20 min per batch |
| Sample Throughput | 15 or 30 samples per run |
| Measurement Range | 0–15,000 mg/L (multi-range) |
| Temperature Control Range | Ambient to 120 °C |
| Accuracy | ±5% FS |
| Photometric Drift | <0.005 A within 20 min |
| Repeatability | ≤3% RSD |
| Display | 7-inch IPS capacitive touchscreen |
| Data Export | USB flash drive, Wi-Fi, RJ45 Ethernet |
| Built-in Thermal Printer | Optional auto/manual print |
| Power Supply | AC 220 V ±10%, 50 Hz |
| Power Consumption | 20 W |
| Operating Environment | 5–40 °C, ≤85% RH |
| Dimensions (W×D×H) | 400 × 320 × 150 mm |
| Weight | 6.0 kg |
| Brand | Brookdale |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | BCODcr-20 |
| Pricing | Available Upon Request |
| Brand | Brookfield |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | BCODcr-40 |
| Pricing | Available Upon Request |
| Brand | BEIYU TECHNOLOGIES |
|---|---|
| Origin | Shanghai, China |
| Model | LCR-100 |
| Application | Hexavalent Chromium (Cr(VI)) and Phosphate Determination in Water |
| Measurement Principle | DPC Colorimetric Spectrophotometry (ISO 11045:2023 / GB/T 7467–1987) |
| Sample Capacity | 21-position Cuvette Carousel + Optional 78/118-position Autosampler |
| Detection Range | Cr(VI): 0–2.0 mg/L (adjustable via auto-dilution) |
| Wavelength Accuracy | ±1 nm @ 540 nm |
| Photometric Repeatability | RSD ≤ 1.2% (n=6, 1.0 mg/L Cr(VI)) |
| Auto-dilution Ratio | 2× to 100× |
| Reagent Monitoring | Real-time Level Sensing with Threshold Alerts |
| Data Output | CSV, PDF, XML |
| Compliance | Designed for GLP/GMP environments |
| Origin | Beijing, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China) |
| Model | CM-02 |
| Price | Upon Request |
| Detection Range | 10–200 mg/L (low range), 50–2500 mg/L (high range) |
| LOD | 3 mg/L |
| Wavelength | 610 nm |
| Accuracy | ±5% (low range), ±4% (high range) |
| Chloride Interference Tolerance | 1000 mg/L (low), 2500 mg/L (high) |
| Measurement Time | 10–15 min |
| Heating Capacity | 25 tubes, 0–180 °C, timer 10–199 min |
| Optical Stability | ±0.003/5 min (blank) |
| Display Resolution | 0.001 |
| Operating Temperature | 5–35 °C |
| Storage Temperature | −10–45 °C |
| Power Consumption | ≤30 W (heater), ≤10 W (analyzer) |
| Weight | 3.0 kg (analyzer), 3.5 kg (full system) |
| Dimensions | 330 × 320 × 170 mm |
| Compliance | HJ/T 399–2007, EPA Method 410.4 (adapted), Standard Methods 5220D (COD by Closed Reflux Colorimetric) |
| Origin | Germany |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | CR4200 |
| Pricing | Available Upon Request |
| Origin | Beijing, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China) |
| Model | CTL-12 |
| Pricing | Available Upon Request |
| Detection Limit | 5 mg/L COD |
| Measurement Range | 20–1200 mg/L COD |
| Repeatability | ≤0.87% |
| Optical Stability | 0.001 A/5 min |
| Sample Throughput | Up to 12 samples per batch |
| Digestion Time | 10 min at 165 °C |
| Measurement Wavelength | 610 nm |
| Chloride Interference Tolerance | ≤900 mg/L Cl⁻ (open-tube mode) |
| Data Storage | 9 pre-programmed calibration curves |
| Display | 5-digit LED (time, date, absorbance, concentration, slope) |
| Power Supply | 220 V, 50 Hz, 200–700 W |
| Brand | DoctorWater |
|---|---|
| Model | Dr-M1101 |
| Type | Portable Multi-Parameter Analyzer |
| Measurement Principle | Electrochemical Sensing (COD via catalytic oxidation current detection) |
| COD Range | 0–500 mg/L |
| COD Accuracy | ≤ ±5% FS |
| Detection Limit | Not Specified (Typical for electrochemical COD sensors: ~2 mg/L) |
| Measurement Time | < 60 s per parameter |
| Display | 8-inch HD color capacitive touchscreen |
| Data Storage | Up to 1,000,000 records |
| Power Supply | Rechargeable Li-ion battery + AC adapter |
| Operating Environment | 0–50 °C, ≤85% RH (non-condensing) |
| Electrode Protection Rating | IP68 |
| Electrode Interface | Digital smart interface with auto-recognition |
| Number of Simultaneous Channels | 6 independent digital electrode ports (expandable to 12) |
| Readout Modes | Real-time, Timed, Interval |
| Data Output | USB 2.0 |
| Language Support | English & Chinese |
| Brand | DoctorWater |
|---|---|
| Origin | Hunan, China |
| Model | Dr-M1201P |
| Instrument Type | Portable |
| Measurement Principle | Electrochemical Sensing (Reagent-Free) |
| COD Range | 0–500 mg/L |
| Accuracy | ≤ ±5% FS |
| Detection Limit | Not Applicable (Reagent-Free Electrochemical Estimation) |
| Measurement Time | < 60 s |
| Display | 5-inch HD Color Touchscreen |
| Data Storage | 1,000,000 Records |
| Power Supply | Rechargeable Li-ion Battery + USB-C AC Adapter |
| Electrode Interface | 3 Independent Digital Sensor Ports |
| Electrode Protection Rating | IP68 |
| Operating Environment | 0–50 °C, ≤85% RH (non-condensing) |
| Compliance | Designed for Field & Lab Use per ISO 5814 (DO), ISO 7888 (EC), ISO 7027 (Turbidity), ASTM D1293 (pH), USP <643> (TOC/COD Correlation Context) |
| Brand | Doctor Water |
|---|---|
| Origin | Hunan, China |
| Model | Dr-T9010 |
| Instrument Type | Laboratory Benchtop Analyzer |
| Measurement Principle | Rapid Digestion Spectrophotometry (COD) & Nesslerization or Salicylate Method (Ammonia-N) |
| Wavelength Range | 340–900 nm |
| Wavelength Accuracy | ±1 nm |
| Wavelength Repeatability | <0.2 nm |
| Spectral Bandwidth | 4 nm |
| Photometric Accuracy | ±0.5% T |
| Photometric Repeatability | ≤0.2% T |
| Absorbance Resolution | 0.001 Abs |
| Optical Stability | ≤±0.005 Abs/20 min |
| Detection Range (COD) | 2–20,000 mg/L |
| Detection Range (NH₃-N) | 0.02–100 mg/L (configurable per method) |
| Accuracy | ≤±5% |
| Repeatability | ≤±2% |
| LOD (COD) | 2 mg/L |
| Measurement Time | ≤10 min (post-digestion) |
| Calibration | Single- or Multi-point with Pre-stored Curves (n=1000) |
| Display | 8-inch HD Capacitive Touchscreen |
| Data Storage | 1,000,000 records |
| Interface | USB-A for U-disk export & thermal printer |
| Power Supply | AC 100–240 V, 50/60 Hz |
| Dimensions | 392 × 315 × 170 mm |
| Weight | 4.4 kg |
| Housing Material | Flame-retardant ABS with Chemical Resistance |
| Key | Origin: Beijing, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Product Origin | Domestic (China) |
| Model | ET-1151M |
| Price Range | USD 1,400–2,800 |
| Instrument Type | Benchtop Laboratory Analyzer |
| Wavelengths | 420 nm, 610 nm |
| COD Range (Standard Method) | 15–150 mg/L |
| COD Range (Rapid Method) | 100–1,000 mg/L |
| TN Range | 0–150 mg/L |
| TP Range | 0.05–20 mg/L |
| NH₃-N Range | 0.10–60.0 mg/L |
| Accuracy | ±8% |
| Repeatability | RSD ≤3% |
| LOD (COD) | 0.1 mg/L |
| Measurement Time (Rapid COD) | 20 min total (incl. digestion & photometry) |
| Batch Capacity | 1 or 20 samples per run |
| Light Source | High-Stability LED |
| Wavelength Accuracy | ±2 nm |
| Photometric Stability | ΔA < 0.005 in 20 min |
| Display Modes | Absorbance, Transmittance, Concentration |
| Auto-Wavelength Selection | Yes |
| Power Supply | 220 V AC, 50 Hz |
| Operating Temp. | 5–50 °C |
| Relative Humidity | 20–85% RH |
| Origin | Beijing, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China-made) |
| Model | ET3150B/ET1150M |
| Instrument Type | Benchtop Laboratory Analyzer |
| Power Supply | 220 V AC, 50 Hz |
| Operating Temperature | 5–50 °C |
| Relative Humidity | 20–85 % RH |
| Wavelength Accuracy | ±2 nm |
| Wavelength Selection | 420 nm and 610 nm (LED-based optical system) |
| Photometric Accuracy | ±8 % of full scale |
| Repeatability | RSD ≤ 3 % |
| Photometric Stability | ΔA < 0.005 A within 20 min |
| Measurement Modes | Absorbance, Transmittance, Concentration |
| Built-in Test Programs | COD, TN, TP, NH₃-N, F⁻ |
| Preloaded Calibration Curves | 6 |
| User-defined Curve Storage | Supported |
| ET3150B Digestion Block Capacity | 24 × Φ16 × 100 mm tubes |
| Digestion Temperature Accuracy | ±1 °C |
| COD Digestion Temp | 165 °C ±1 °C |
| TN/TP Digestion Temp | 105 °C |
| Timer Range | 1–1860 min (31 h) |
| Display | LCD with full Chinese interface |
| Heating Rate | 20 → 165 °C in ≤10 min |
| Safety Features | Auto-shutdown, over-temperature alarm, timer alert |
| Brand | EURO TECH |
|---|---|
| Origin | Shanghai, China |
| Model | ET1151M |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Rapid Digestion Spectrophotometry |
| Wavelengths | 420 nm, 610 nm |
| COD Range | 0–1000 mg/L |
| TN Range | 0–150 mg/L |
| TP Range | 0.02–20 mg/L |
| Accuracy | ≤ ±5% |
| Repeatability | RSD ≤ 3% |
| Detection Limit | 0.1 mg/L (COD), 0.01 mg/L (TP), 0.1 mg/L (TN) |
| Measurement Time | 20 min per sample |
| Throughput | 1 sample per run |
| Optical Source | High-Stability LED |
| Wavelength Accuracy | ±3 nm |
| Photometric Modes | Absorbance, Transmittance (%T), Concentration |
| Stability | ΔA < 0.005 over 20 min |
| Brand | EXPEC |
|---|---|
| Origin | Zhejiang, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | SUPEC 5000 COD |
| Pricing | Available Upon Request |
| Brand | EXPEC |
|---|---|
| Origin | Zhejiang, China |
| Model | SUPEC 5000 Series |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Rapid Digestion Spectrophotometry (in accordance with HJ/T 399–2007) |
| Sample Throughput | Fully Automated Batch Processing |
| Automation Scope | Integrated Digestion, Cooling, Tube Handling, Mixing, and Photometric Measurement |
| Reagent Delivery | Precision Syringe Pump System |
| Optical Detection | Fixed-Wavelength Photometry (Compliant with Standard Method Requirements) |
| Compliance | HJ/T 399–2007 |
| Brand | FENK |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | OEM/ODM Producer |
| Instrument Type | Benchtop Laboratory Analyzer |
| Model | CL-101 |
| Measurement Principle | Spectrophotometry (Absorption-based) |
| Wavelengths | 420 nm, 540 nm, 620 nm, 700 nm |
| Accuracy | ≤ ±5% (COD: ≤ ±8%) |
| Repeatability | ≤ 3% |
| Optical Stability | < ±0.001 ABS |
| Data Storage | 1,000 records |
| Display | 4.3-inch capacitive touchscreen LCD |
| Dimensions | 210 × 150 × 110 mm |
| Weight | 1.35 kg |
| Power Supply | DC 5 V / 2 A |
| Battery Capacity | 4800 mAh |
| Operating Environment | −10 to 40 °C, <80% RH (non-condensing) |
| Calibration Modes | Real-time calibration & formula-based calibration |
| Photometric Modes | Absorbance, Concentration, Transmittance |
| Cuvette Format | 16 mm round glass tubes |
| Compliance | Designed for ASTM D1252 (COD), ISO 7150-1 (NH₃-N), and EPA Method 350.1 (Ammonia) |
| Brand | FPI |
|---|---|
| Origin | Zhejiang, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Product Category | Domestic |
| Model | COD-2000 |
| Instrument Type | Online Analyzer |
| Measurement Principle | Potassium Dichromate Oxidation–Spectrophotometric Method |
| Measurement Range | 0–200 / 0–500 / 0–2000 mg/L COD |
| Accuracy | ≤ ±10% of reading |
| Repeatability | ≤ 3% RSD |
| Limit of Detection | 10 mg/L COD |
| Zero Drift (24 h) | ±5 mg/L |
| Maintenance Interval | Up to 30 days without service intervention |
| Reagent Consumption | <10%–20% of conventional segmented flow systems |
| Brand | Fumi |
|---|---|
| Origin | Shanghai, China |
| Model | COD-1 |
| Instrument Type | Laboratory Benchtop Analyzer |
| Sample Capacity | 100 positions |
| Digestion Temperature | 165 °C ±0.1 °C |
| Digestion Time | 15 min (configurable) |
| Cooling Endpoint | 60 °C (pre-mix) and 20 °C (pre-measurement) |
| Optical Wavelengths | 440 nm, 600 nm, 680 nm |
| Spectral Bandwidth | ≤10 nm |
| Absorbance Range | 0–3 A |
| Digestion Tube Dimensions | 16 mm × 100 mm (standard), optional 16 mm × 120 mm |
| Operating Environment | 10–30 °C |
| Power Supply | 220 V, 50 Hz |
| Power Consumption | 1280 W |
| Dimensions (W×D×H) | 940 mm × 680 mm × 885 mm |
| Weight | 80 kg |
| Remote Control | Yes |
| LIMS Integration | Network-enabled output |
| Mobile App Support | Yes |
| Built-in Imaging System | Yes |
| Compliance Standard | HJ/T 399–2007 |
| Brand | Jilin University Xiaotian’e |
|---|---|
| Origin | Jilin, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | GDYS-101SQ |
| Price Range | USD 700–1,400 (FOB) |
| Instrument Type | Portable |
| Detection Limit | 10.0 mg/L |
| Measurement Range | 0.0–500.0 mg/L |
| Accuracy | ±5% of reading |
| Method | Sealed Reflux Colorimetric Analysis |
| Analysis Time | ≤20 minutes per sample |
| Reagent Format | Single-use proprietary reagent vials |