Chemical Oxygen Demand Analyzer
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| Brand | Leichi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | COD-582 |
| Instrument Type | Online Analyzer |
| Measurement Principle | Potassium Dichromate Digestion Method (Online) |
| Measurement Range | 10.0–5000 mg/L |
| Accuracy | ±10% or ±5 mg/L (for values ≤50 mg/L) |
| Repeatability | 5% or 5 mg/L (for values ≤100 mg/L) |
| Resolution | 0.1 mg/L (≤100 mg/L), 1 mg/L (>100 mg/L) |
| Zero Drift | ±5 mg/L/24 h |
| Span Drift | ±10%/24 h |
| Power Supply | AC 220 V ±10%, 50 Hz |
| Dimensions (W×D×H) | 550 × 400 × 1680 mm |
| Weight | 50 kg |
| MTBF | ≥360 hours |
| Output | Isolated 4–20 mA DC (configurable upper/lower limits) |
| Communication | RS-232 or RS-485 (selectable) |
| Interface | 7-inch color LCD touchscreen |
| Maintenance Interval | Up to 30 days without service |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | COD-571 |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Dichromate Digestion Method (2-hour standard digestion per ISO 6060 / HJ 828–2017) |
| Wavelengths | 420 nm and 620 nm |
| Measurement Ranges | 0–150 mg/L (low-range), 0–1500 mg/L (high-range) |
| Accuracy | ±8% of reading |
| Repeatability | ≤3% RSD |
| Measurement Time | ~20 min post-digestion |
| Throughput | Batch analysis of multiple water samples |
| Absorbance Range | 0.000–2.000 Abs |
| Absorbance Accuracy | ±0.01 Abs or ±5% |
| Absorbance Repeatability | ≤0.005 Abs or 2% |
| Wavelength Accuracy | ±4 nm |
| Transmittance Error | ±2% |
| Transmittance Repeatability | ≤0.5% |
| Cuvette Compatibility | 10 mm square cuvettes and 16 mm round test tubes |
| Data Storage | 2000 measurement records with timestamp, sample ID, dilution factor, and calibration metadata |
| Connectivity | RS-232, USB-B, optional U disk export |
| Power Supply | AC 100–240 V input / DC 24 V output adapter |
| Dimensions | 302 × 205 × 122 mm |
| Weight | 1.33 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | COD-571 |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Dichromate Digestion Method (2-hour reflux) |
| Wavelengths | 420 nm and 620 nm |
| Measurement Ranges | 0–150 mg/L (low-range), 0–1500 mg/L (high-range) |
| Accuracy | ±8% of reading |
| Repeatability | ≤3% RSD |
| Measurement Time | 20 min per sample (post-digestion) |
| Photometric Range | 0.000–2.000 Abs |
| Absorbance Accuracy | ±0.01 Abs or ±5% |
| Wavelength Accuracy | ±4 nm |
| Transmittance Error | ±2% |
| Photometric Repeatability | ≤0.005 Abs or 2% |
| Sample Throughput | Batch processing for multiple water samples |
| Cuvette Format | 10 mm square cuvettes and 16 mm round test tubes |
| Data Storage | 2000 measurement records |
| Connectivity | RS-232, USB, U-disk export |
| Power Supply | AC 100–240 V input / DC 24 V output |
| Dimensions (W×D×H) | 302 × 205 × 122 mm |
| Weight | 1.33 kg |
| Ingress Protection | IP65 |
| Compliance | GLP-compliant data traceability, audit-ready logging |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Domestic (China) |
| Model | COD-571 |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Rapid Digestion Method (Closed-Tube, Dichromate Oxidation) |
| Measurement Range | 0–1500 mg/L COD |
| Accuracy | ±8% of reading ±1 mg/L (for 0–150 mg/L) |
| Repeatability | ≤3% RSD |
| Digestion Time | 0–120 min (programmable) |
| Batch Capacity | 21 samples per run |
| Digestion Temperature Range | 50–150 °C (control accuracy: ±5 °C below 150 °C) |
| Timing Accuracy | ±5 min at 120 min setting |
| Stability | ±2 mg/L drift over 15 min |
| Operating Environment | 5–40 °C, RH ≤85%, AC 220 V ±10%, 50 Hz ±1 Hz |
| Safety Features | Overtemperature alarm, auto-shutdown post-digestion |
| Data Output | Integrated thermal printer (PP40 type), direct COD concentration readout |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | COD-572 |
| Price Range | USD 700 – 1,400 (FOB Shanghai) |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Coulometric Titration (ASTM D1252–04, ISO 8467:1993 compliant) |
| COD Range | (0.0–100.0) mg/L (standard), extendable to (100.0–1000) mg/L via dilution or high-range mode |
| Accuracy | ±2 mg/L (absolute error at ≤100 mg/L) |
| Repeatability | RSD ≤ 2% |
| Power Supply | AC 220 V ±10%, 50 Hz ±1% |
| Dimensions (W×D×H) | 300 × 235 × 100 mm |
| Weight | 3.0 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | COD-572 |
| Instrument Type | Laboratory Benchtop Analyzer |
| Measurement Principle | Coulometric Titration (ASTM D1252–04, ISO 8467) |
| COD Range | 0.0–100.0 mg/L (standard), extendable to 100.0–1000 mg/L |
| Accuracy | ±2 mg/L (absolute error, certified reference standards) |
| Repeatability | ≤2% RSD (n=6, mid-range calibration standard) |
| Electrolysis Current Options | 10 mA, 20 mA, 40 mA |
| Data Storage Capacity | 200 measurements each for permanganate (Mn) and dichromate (Cr) methods |
| Calibration Memory | 10 user-defined standard volume configurations per method |
| Power Supply | AC 220 V ±10%, 50 Hz ±1% |
| Dimensions (W×D×H) | 300 × 235 × 100 mm |
| Weight | 3.0 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | COD-580 |
| Instrument Type | Online Analyzer |
| Measurement Principle | Electrochemical Oxidation (Hydroxyl Electrode Method) |
| Measurement Range | 10.0–1000 mg/L |
| Resolution | 0.1 mg/L |
| Accuracy | ±5% of Full Scale (FS) |
| Repeatability | ≤3% FS |
| Zero Drift | ±5 mg/L per 24 h |
| Span Drift | ±10% per 24 h |
| Power Supply | AC 220 V ±10%, 50 Hz ±1% |
| Dimensions (W×D×H) | 600 × 455 × 720 mm |
| Weight | 50 kg |
| Interface Options | RS-232 standard |
| Display | 7-inch color touchscreen with Chinese UI |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | COD-582 |
| Instrument Type | Online Analyzer |
| Measurement Principle | Potassium Dichromate Digestion and Colorimetric Detection |
| Measurement Range | 10.0–5000 mg/L |
| Accuracy | ±10% or ±5 mg/L (for values ≤50 mg/L) |
| Repeatability | 5% or 5 mg/L (for values ≤100 mg/L) |
| Resolution | 0.1 mg/L (≤100 mg/L), 1 mg/L (>100 mg/L) |
| Zero Drift | ±5 mg/L/24 h |
| Span Drift | ±10%/24 h |
| Power Supply | AC 220 V ±10%, 50 Hz |
| Dimensions | 550 × 400 × 1680 mm |
| Weight | 50 kg |
| MTBF | ≥360 hours |
| Output | Isolated 4–20 mA DC (configurable upper/lower limits) |
| Communication | RS-232 or RS-485 (selectable) |
| Maintenance Interval | Up to 30 days without servicing |
| Brand | LeiCi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | DGS-450 |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Potassium Dichromate Digestion Method (for COD), Nesslerization (for Ammonia-N), Molybdate Blue Spectrophotometry (for Total Phosphorus), Alkaline Potassium Persulfate Digestion with Chromotropic Acid (for Total Nitrogen) |
| Wavelengths | 420 nm, 470 nm, 620 nm, 700 nm |
| COD Range | (0.000–1500) mg/L (extendable to 15,000 mg/L) |
| Ammonia-N Range | (0.000–10.00) mg/L (extendable to 100.0 mg/L) |
| Total Phosphorus Range | (0.000–1.000) mg/L (extendable to 10.00 mg/L) |
| Total Nitrogen Range | (0.000–30.00) mg/L (extendable to 300.0 mg/L) |
| Absorbance Range | (0.000–2.000) Abs |
| Wavelength Accuracy | ±4 nm |
| Transmittance Error | ±2% |
| Photometric Repeatability | ≤0.5% |
| Ammonia-N Accuracy | ±5% |
| COD & Total Phosphorus & Total Nitrogen Accuracy | ±8% (COD & TP), ±1 mg/L (≤10 mg/L TN) or ±5% (>10 mg/L TN) |
| Repeatability (all parameters) | ≤3% |
| Detection Limits | Ammonia-N ≤0.03 mg/L |
| Cell Format | 25 mm cuvette / 16 mm tube |
| Power Supply | AC 100–240 V input, DC 20 V output |
| Dimensions | 302 × 205 × 122 mm |
| Weight | 1.33 kg |
| Data Storage | 500 records per parameter |
| Interface | RS-232, USB-B, U-disk export support |
| Brand | Lianhua |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | LH-P3COD |
| Instrument Type | Portable |
| Measurement Principle | Potassium Dichromate Digestion Method (Portable) |
| Wavelengths | 420 nm and 610 nm |
| Measurement Range | 0–15,000 mg/L COD |
| Accuracy | ≤ ±8% for values ≤ 50 mg/L |
| Repeatability | ≤ ±3% |
| Batch Processing Capacity | 6 / 9 / 16 / 25 samples (user-selectable) |
| Brand | Lianhua Tech |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | 5B-3C(V8) |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Rapid Digestion–Spectrophotometric Method (HJ/T 399–2007 compliant) |
| Wavelength | 610 ± 20 nm |
| COD Range | High-range: 20–10,000 mg/L (segmented) |
| Accuracy | ≤ ±8% for COD ≤ 50 mg/L |
| Repeatability | ≤ ±3% |
| Detection Limit | 0.1 mg/L |
| Analysis Time | 20 minutes per batch |
| Sample Throughput | 16 samples per run |
| Brand | Lianhua Tech |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | LH-T3COD |
| Pricing | Upon Request |
| Instrument Type | Laboratory Benchtop Analyzer |
| Measurement Principle | Rapid Digestion Method (HJ/T 399–2007) |
| Measurement Range | 20–10000 mg/L (multi-range, segmented) |
| Accuracy | ≤8% |
| Repeatability | ≤3% |
| Brand | Lianhua Technology |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | LH-CM3H(V11) |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Rapid Digestion Spectrophotometry |
| Measurement Range | 0.3–20 mg/L (multi-range segmented) |
| Accuracy | ≤ ±10% |
| Repeatability | ≤ ±5% |
| Limit of Detection (LOD) | 0.08 mg/L |
| Analysis Time per Batch | 50 minutes |
| Sample Throughput | 16 samples per run |
| Brand | LoHua |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | LH-T600 |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Rapid Digestion Spectrophotometry |
| Wavelengths | 610 nm / 420 nm |
| COD Range | 0–15,000 mg/L |
| Accuracy | ≤5% |
| Repeatability | ≤±3% |
| LOD | 0.5 mg/L |
| Analysis Time per Batch | 20 min |
| Throughput | 30 samples per run |
| Brand | LoHua Tech |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | 5B-3B(V11) |
| Instrument Type | Laboratory Benchtop Analyzer |
| Measurement Principle | Absorption Photometry (Multi-Wavelength Optical Detection) |
| Wavelength Range | Programmable Multi-Wavelength (e.g., 420 nm, 470 nm, 620 nm, 700 nm) |
| Measurement Range | 0–15,000 mg/L (COD equivalent) |
| Accuracy | ≤ ±5–10% of reading |
| Repeatability | ≤ ±5–10% RSD |
| Detection Limit | 2–15,000 mg/L (method-dependent) |
| Analysis Time | COD < 20 min |
| Batch Capacity | 16 / 25 / 30 samples (user-selectable cuvette rack configuration) |
| Brand | LoHua Tech |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Rapid Digestion Spectrophotometry |
| Wavelength Configuration | Multi-Wavelength (610 nm for COD, 420 nm for Ammonia-N) |
| Measurement Range | COD: 0–15,000 mg/L (multi-range auto-segmentation) |
| Ammonia-N | 0–160 mg/L (multi-range auto-segmentation) |
| Accuracy | ≤ ±5% of reading |
| Repeatability | ≤ ±3% RSD |
| Detection Limit | 0.006 mg/L (Ammonia-N) |
| Analysis Time | <20 min (COD), <15 min (Ammonia-N) |
| Batch Capacity | 16 samples per run |
| Data Storage | 12,000 measurement records with timestamp, instrument parameters, and result metadata |
| Calibration | Onboard curve generation via standard solution input and linear/nonlinear regression |
| Connectivity | USB interface + optional infrared wireless module |
| Thermal Control | Adaptive power modulation for 16-position digestion block with over-temperature and time-delay safety cutoff |
| Built-in Thermal Printer | Supports on-demand printout of current/historical results |
| Brand | Yoke |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Laboratory-Grade |
| Model | LIC100 |
| Measurement Principle | Rapid Digestion–Spectrophotometric Method (HJ/T 399–2007) |
| Measurement Range | 4–10,000 mg/L COD (segmented auto-ranging) |
| Sample Throughput | 16 samples per batch |
| Calibration | Onboard Auto-Standardization |
| Connectivity | Wi-Fi, Bluetooth, USB, Cloud API, WeChat Mini-Program Integration |
| Display | 7-inch Capacitive Touchscreen |
| Compliance | HJ/T 399–2007, ISO 6060, ASTM D1252–22 (Method B) |
| Brand | Merck Millipore |
|---|---|
| Origin | Germany |
| Model | TR320 / TR420 / TR620 |
| Display | LCD with real-time temperature & timer |
| Capacity | TR320: 12 × 16 mm tubes |
| TR420/TR620 | 24 × 16 mm tubes (TR620: dual independent 12-position blocks) |
| Temperature Range | TR320: 100–148 °C |
| TR420/TR620 | RT–170 °C |
| Temperature Accuracy | ±1.0 °C |
| Inter-zone Uniformity | ±1.5 °C vs setpoint |
| Built-in Programs | 7 preconfigured (e.g., 148 °C/20 min for COD, 120 °C/60 min for TOC, 100 °C/60 min for Ag/AOX) |
| Custom Programs | TR420/TR620 support up to 8 user-defined protocols (0–180 min, 1 °C resolution) |
| Power Supply | 115–230 V~, 50/60 Hz |
| Dimensions (H×W×D) | 180 × 256 × 307 mm |
| Weight | TR320: 2.85 kg |
| TR420/TR620 | 3.6 kg |
| Optional Accessories | External Pt100 temperature probe, PC interface cable for AQA documentation |
| Brand | Merck |
|---|---|
| Origin | Germany |
| Model | Picco COD |
| Instrument Type | Portable |
| Wavelength | 610 ± 20 nm |
| Measurement Range | 0–10000 mg/L (multi-range, segmented) |
| Accuracy | ≤ ±10% |
| Repeatability | ≤ ±5% |
| LOD | 0.1 mg/L |
| Measurement Time | < 5 seconds (post-digestion) |
| Batch Capacity | 12 or 24 samples (digestion-dependent) |
| Power Supply | 9-V alkaline battery (≈600 measurements) |
| Operating Temperature | 5–40 °C |
| Relative Humidity | 30–90% RH (non-condensing) |
| Compliance | CE marked per DIN EN 55022, EN 61000-4-2, EN 61000-4-8, EN 50082-2, EN 50081-1, DIN V ENV 50140, EN 50204 |
| Brand | Merck |
|---|---|
| Origin | Germany |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Product Origin | Imported |
| Model | Picco COD/CSB |
| Pricing | Available Upon Request |
| Optical System | LED Light Source with Interference Filter at 605 nm |
| Measurement Accuracy | ±3.5% |
| Measurement Time | 3–4 seconds |
| Operating Temperature | 5–40 °C |
| Operating Humidity | 30–90% RH (non-condensing) |
| Power Supply | 9-V Alkaline Battery (≈600 measurements per set) |
| Auto-Off Delay | ~5 minutes after last keypress |
| Safety Certifications | CE compliant per DIN EN 55022, EN 61000-4-2, EN 61000-4-8, EN 50082-2, EN 50081-1, DIN V ENV 50140, EN 50204 |
| Sample Cell Format | 16 mm round glass cuvettes |
| Required Pre-treatment | Digestion using external COD digestion unit (e.g., Merck Spectroquant® Thermoreactor) |
| Brand | Macherey-Nagel (Germany) |
|---|---|
| Origin | Germany |
| Model | PF-3 919342 |
| Instrument Type | Portable |
| Measurement Principle | UV Absorption Spectrophotometry |
| Wavelength | 365 nm |
| Measurement Range | 2–60,000 mg/L COD |
| Repeatability | High precision |
| Detection Limit | Low (optimized for high-sensitivity UV absorption) |
| Measurement Time | <5 seconds per sample |
| Sample Throughput | Single-sample mode |
| Optical System | LED-based photometer with interference filters (365/450/595 nm) |
| Wavelength Accuracy | ±2 nm |
| Bandwidth (FWHM) | 10–12 nm |
| Detector | Silicon photodiode |
| Cuvette Format | 16 mm round tubes |
| Data Storage | 50 measurement records |
| Display | Graphical LCD (64 × 128 pixels) |
| Operating Temperature | 10–40 °C |
| Relative Humidity | ≤80% RH (non-condensing) |
| Power Supply | 3×AA batteries (alkaline or rechargeable), USB bus power, optional internal rechargeable battery |
| Enclosure Rating | IP68 |
| Dimensions | 170 × 95 × 68 mm |
| Weight | 0.5 kg |
| Compliance | CE-marked |
| Warranty | 12 months |
| Brand | Online Instrument |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Manufacturer |
| Product Category | Domestic |
| Model | OL 3120 |
| Instrument Type | Laboratory-Grade |
| Measurement Principle | 2-Hour Closed-Vessel Digestion Followed by Potentiometric/Colorimetric Titration |
| Measurement Range | 0–70,000 mg/L COD (with automatic dilution for over-range samples) |
| Accuracy | ≤2% RSD (vs. certified reference materials) |
| Repeatability | ≤2% RSD |
| Detection Limit | 4 mg/L COD |
| Sample Processing Time | <3 min per sample (post-digestion titration) |
| Sample Capacity | 30–100 positions (user-configurable) |
| Digestion Stations | 20 parallel positions |
| Cooling Method | Point-to-point forced-air condensation system |
| Endpoint Detection | Dual-mode (colorimetric + algorithm-assisted hue transition recognition per ISO 6060 and EPA 410.4) |
| Digestion Control | Intelligent micro-boiling temperature regulation (150–165 °C, ±0.5 °C stability) |
| Data Output | Excel/PDF export, LIMS integration (HL7/ASTM E1384 compliant), automated report generation with audit trail |
| Brand | Online Instrument |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Manufacturer |
| Region of Origin | Domestic (China) |
| Model | OL3010 |
| Instrument Type | Laboratory Benchtop Analyzer |
| Measurement Principle | 2-Hour Closed-Reflex Digestion Followed by Potentiometric or Colorimetric Endpoint Titration |
| Measurement Range | 0–70,000 mg/L COD |
| Accuracy | ≤5% |
| Repeatability | RSD ≤3% |
| Limit of Detection | 4 mg/L |
| Titration Time | <4 minutes |
| Sample Capacity | 10 positions for sample loading |
| Digestion Capacity | 10 parallel digestion vessels |
| Titration Channels | 1 |
| Brand | Online Instrument |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Manufacturer |
| Product Category | Domestic |
| Model | OL3015 |
| Instrument Type | Laboratory-Grade |
| Measurement Principle | 2-Hour Closed-Vessel Digestion Followed by Potentiometric/Titrmetric Endpoint Detection |
| Wavelength | Not Applicable (Titration-Based) |
| Accuracy | ≤5% |
| Repeatability | RSD ≤3% |
| LOD | 4 mg/L COD |
| Sample Capacity | 15-position digestion + 15-position sample rack (expandable to 50-position autosampler) |
| Digestion Positions | 15 |
| Titration Channels | 2 |
| Chloride Correction | Integrated Automatic Chloride Compensation Module |
| Temperature Control | Programmable Heating (15–350 °C) with Air/Water Cooling |
| Cleaning Protocol | Fully Automated Rinse Cycles for Digestion Vessels, Titration Cells, and Fluidic Lines |
| Data Export | Excel/PDF Reports |
| LIMS Integration | Supported (Standard ASTM D1252 & ISO 6060 Compliant Workflow) |
| Brand | Online Instrument |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Laboratory-Based |
| Model | OL3236 |
| Measurement Principle | Rapid Digestion Spectrophotometry |
| Wavelengths | 600 nm ± 20 nm and 440 nm ± 20 nm |
| Measurement Range | 15–1000 mg/L COD |
| Accuracy | ±5% of reading |
| Repeatability | RSD ≤ 2% |
| Limit of Detection | 4 mg/L |
| Cycle Time | 40 minutes per batch of 36 samples |
| Batch Capacity | 108 sample positions |
| Digestion Capacity | 36 simultaneous digestion units |
| Photometric Measurement Channels | 6 parallel optical cells |
| Brand | Proteus |
|---|---|
| Origin | United Kingdom |
| Model | Proteus 40 |
| Instrument Type | Online Analyzer |
| Measurement Principle | UV-Vis Absorbance (275 nm) + Electrochemical/Biosensor Hybrid Detection |
| Measurement Range | 0–600 mg/L COD |
| Accuracy | ±5% FS |
| Repeatability | <±5% RSD |
| LOD | 0.01 mg/L COD |
| Response Time | Continuous Real-Time Output |
| Compliance | CE, UKCA, RoHS |
| Data Transmission | Bluetooth 5.0, RS-485, Modbus TCP, Optional 4G/LTE |
| Brand | Rikorika |
|---|---|
| Origin | Japan |
| Model | UV-700W |
| Instrument Type | Online Analyzer |
| Measurement Principle | Ultraviolet Absorption Spectrophotometry |
| Wavelength | 255 nm (UV) |
| Measurement Range | 0–200 mg/L COD (as KMnO₄ method equivalent) |
| Accuracy | ±2% of full scale |
| Repeatability | ≤2% RSD |
| Detection Limit | 1 mg/L COD |
| Measurement Interval | Continuous monitoring (24/7) |
| Optical Path Length | 10 mm |
| Display Resolution | 0.001 Abs/cm (UV absorbance), 1 mg/L (COD) |
| Output Signal | Isolated DC 4–20 mA (≤550 Ω load) |
| Enclosure Rating | IP65 |
| Operating Temperature | −5°C to +40°C (indoor, shaded installation) |
| Weight | ~2.5 kg (with sunshade cover) |
| Brand | ROCKER |
|---|---|
| Origin | Taiwan |
| Model | CD200 |
| Instrument Type | Portable |
| Measurement Principle | UV Absorption Spectrophotometry |
| Measurement Ranges | 10–150 mg/L, 100–1500 mg/L, 1000–15000 mg/L |
| Display | Backlit LCD |
| Light Source | LED |
| Measurement Time | 3 seconds |
| Data Storage Capacity | 100 records |
| Power Supply | DC 9 V battery or external AC adapter |
| Weight | 0.5 kg |
| Dimensions | 23 × 13 × 9 cm |
| Regulatory Compliance | CE Marked |
| Compatible Reagents | Hach, Lovibond, CHEMetrics, Hanna, Merck |
| Brand | Rocker |
|---|---|
| Origin | Taiwan |
| Model | WD100 |
| Instrument Type | Portable |
| Measurement Principle | UV-Vis Absorption Spectrophotometry |
| Wavelengths | 420 nm, 610 nm (auto-selected) |
| Measurement Range | 10–5000 mg/L |
| Accuracy | ≤ ±10% |
| Repeatability | ≤ 0.005 Abs / 30 min |
| LOD | 0.1 mg/L |
| Measurement Time | 3 seconds |
| Sample Throughput | 1 cuvette per assay |
| Display | Backlit LCD |
| Light Source | LED |
| Data Storage | 100 records |
| Data Fields | Parameter, Wavelength, Concentration, Sample ID, Timestamp |
| Power Supply | DC 9 V battery or AC adapter (100–240 V AC input) |
| Dimensions | 23 × 13 × 9 cm |
| Certifications | CE |
| Brand | SAIL HERO |
|---|---|
| Origin | Hebei, China |
| Manufacturer Type | OEM Manufacturer |
| Product Origin | Domestic (China) |
| Model | SERES 2000 CODCr |
| Instrument Type | Online Analyzer |
| Measurement Principle | Potassium Dichromate High-Temperature Closed-Vessel Digestion Coupled with Spectrophotometry |
| Wavelength | 600 nm |
| Measurement Range | 0–200 / 0–500 / 0–1000 mg/L COD (extendable to 12,000 mg/L) |
| Accuracy | ±3% of reading |
| Repeatability | ≤3% RSD |
| Limit of Detection | 3 mg/L COD |
| Cycle Time | 30 minutes per sample |
| Batch Capacity | 3 samples per cycle |