Chemical Oxygen Demand Analyzer
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Showing 31–42 of 42 results
| Brand | SAIL HERO |
|---|---|
| Origin | Hebei, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Online Analyzer |
| Measurement Principle | Potassium Dichromate Oxidation–Spectrophotometric Method |
| Measurement Range | 0–3500 mg/L COD<sub>Cr</sub> (expandable) |
| Repeatability | ±3% RSD |
| Limit of Detection | 5 mg/L COD<sub>Cr</sub> |
| Analysis Cycle Time | 60–360 min per measurement |
| Brand | Shimadzu |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Product Category | Domestic |
| Model | COD-4200 |
| Instrument Type | Online Analyzer |
| Measurement Principle | High-Temperature Potassium Dichromate Digestion with Photometric Detection |
| Standard Range | 30–4000 mg/L COD |
| Accuracy | ±10% at ≥100 mg/L |
| Repeatability | ≤±5% |
| Zero Drift | ±5 mg/L |
| Span Drift | ≤±5% |
| Resolution | <1 mg/L |
| Minimum Measurement Cycle | 20 minutes |
| Calibration Modes | Manual and Automatic |
| Communication Interfaces | RS-232, 4–20 mA (bidirectional) |
| Power Supply | 220 VAC ±10%, 50 Hz ±5% |
| Power Consumption | ~100 VA |
| Dimensions | 500 mm × 420 mm × 1550 mm |
| Weight | ~90 kg |
| Brand | Shimadzu |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | UVM-4020 |
| Instrument Type | Online Analyzer |
| Measurement Principle | Weighted Multi-Wavelength Ultraviolet Absorption Spectrophotometry (243 nm, 254 nm, 265 nm, 275 nm, 290 nm) |
| Calibration | Automatic zero/span calibration with standard solutions (optional) |
| Measurement Ranges | 0–400 SAC, 0–200 SAC, 0–80 SAC |
| Cycle Time | 1 min (minimum), adjustable from 10 to 720 min |
| Output Parameters | COD, BOD, TOC, SAC |
| Preloaded Conversion Formulas | 30 built-in empirical equations |
| Auto-Cleaning Interval | User-configurable timer-based internal tubing flush |
| Power Supply | 220 V ±10 V, 50/60 Hz, ~100 VA |
| Operating Environment | 5–40 °C, ≤90% RH (non-condensing, non-freezing) |
| Sample Flow Rate | 1–2 L/min |
| Max. Sample Pressure | ≤50 kPa |
| Installation | Indoor only |
| Brand | Sipo Environment |
|---|---|
| Origin | Tianjin, China |
| Model | DR8800 |
| Instrument Type | Benchtop Laboratory Analyzer |
| Detection Principle | Rapid Closed-Vessel Catalytic Digestion Coupled with Dual-Wavelength Photometry (440 nm & 600 nm) |
| Detection Range | 10–250 mg/L (Low Range), 100–2500 mg/L (High Range) |
| LOD | 3 mg/L |
| Accuracy | ±5% (Low Range), ±4% (High Range) |
| Repeatability | RSD ≤2% (5–100 mg/L) |
| Chloride Interference Tolerance | ≤2000 mg/L Cl⁻ |
| Wavelengths | 440 nm (low-range), 600 nm (high-range) |
| Optical Stability | ≤0.001 A/60 min |
| Data Storage | 9999 measurements, 99 calibration curves |
| Power Supply | 220 V AC, 50 Hz |
| Operating Temperature | 5–40 °C |
| Dimensions (DR8800) | Not specified |
| Weight (DR8800) | Not specified |
| Complies With | HJ/T 399–2007 |
| Brand | TIANER |
|---|---|
| Origin | Tianjin, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Portable |
| Measurement Principle | Rapid Digestion Spectrophotometry (Lab-Grade) |
| Wavelength Range | 340–900 nm |
| COD Range | 2–20,000 mg/L |
| Accuracy | ≤ ±5% |
| Repeatability | ≤ ±2% |
| LOD | 0.01 mg/L |
| Digestion Time | 30 min |
| Batch Capacity | 8 samples |
| Display | 7-inch color capacitive touchscreen |
| Data Storage | 1,000,000 measurement records |
| Preloaded Calibration Curves | 1,000 |
| Optical System | Fiber-optic detection with imported cold-light source (≥100,000 h lifetime) |
| Wavelength Accuracy | ±1 nm |
| Spectral Bandwidth | 4 nm |
| Resolution | 0.001 AU |
| Dual-Zone Digestion Block | 8-position, independently controlled (0–200 °C) |
| Power | Integrated 40,000 mAh Li-ion battery |
| Connectivity | USB, RS232, optional Bluetooth |
| Compliance | ISO 9001 & ISO 14001 certified |
| Software | Proprietary water quality analysis platform (registered copyright) |
| Brand | Titan Instruments |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Manufacturer |
| Origin Category | Domestic |
| Model | ACOD-30 |
| Pricing | Upon Request |
| Instrument Type | Laboratory Benchtop |
| Measurement Principle | Dichromate Oxidation with Automated Potentiometric/Colorimetric Endpoint Detection (Compliant with HJ 828–2017) |
| Brand | VELP |
|---|---|
| Origin | Italy |
| Model | ECO |
| Instrument Type | Laboratory Digestion Block |
| Digestion Principle | Standard 2-hour Closed-Vessel Oxidation (DIN 38409-H41, ISO 6060, APHA 5220C) |
| Temperature Range | Ambient to 200 °C |
| Thermal Stability | ±0.5 °C (ECO 6/16), ±0.3 °C (ECO 8/25) at 150 °C |
| Heating Time Programmable | 0–199 min |
| Sample Volume Capacity | Up to 200 mL per vial (ECO 6) |
| Batch Capacity | 6 / 8 / 16 / 25 positions |
| Construction | Powder-coated steel housing with chemical-resistant epoxy finish |
| Safety Features | Dual independent overtemperature protection, auto-shutdown on cycle completion, audible end-of-cycle alarm |
| Compliance | Designed for use with EPA Method 410.4, ISO 6060, and DIN 38409-H41 workflows |
| Brand | Water Doctor |
|---|---|
| Origin | Hunan, China |
| Model | Dr-T9001 |
| Instrument Type | Laboratory Benchtop Analyzer |
| Measurement Principle | Rapid Digestion Spectrophotometry |
| Wavelength Range | 340–900 nm |
| COD Range | 2–20,000 mg/L |
| Accuracy | ≤ ±5% |
| Repeatability | ≤ ±2% |
| LOD | 2 mg/L |
| Digestion & Measurement Time | 10 min |
| Wavelength Accuracy | ±1 nm |
| Wavelength Repeatability | < 0.2 nm |
| Spectral Bandwidth | 4 nm |
| Transmittance Error | ±0.5% |
| Transmittance Repeatability | ≤ 0.2% T |
| Optical Stability | ≤ ±0.005 Abs/20 min |
| Resolution | 0.001 Abs |
| Light Source | Imported Cold LED (Lifespan > 100,000 h) |
| Pre-stored Calibration Curves | 1,000 |
| Data Storage Capacity | 1,000,000 records |
| Display | 8-inch HD capacitive touchscreen |
| Sample Holders | Rotatable 16-mm tube position (360°), dual cuvette positions (10 mm & 30 mm pathlength), and four independent digital electrode ports |
| Detection Modes | Absorbance, Transmittance, Concentration |
| Calibration Options | Single-point and multi-point standard calibration |
| Data Export | USB flash drive |
| Housing Material | Corrosion- and heat-resistant ABS |
| Dimensions | 392 × 315 × 170 mm |
| Weight | 4.4 kg |
| Brand | Water Doctor (DoctorWater) |
|---|---|
| Origin | Hunan, China |
| Model | Dr-T9901 |
| Instrument Type | Portable |
| Measurement Principle | Rapid Digestion Spectrophotometry (Lab-Grade) |
| Wavelength Range | 340–900 nm |
| Wavelength Accuracy | ±1 nm |
| Wavelength Repeatability | <0.2 nm |
| Spectral Bandwidth | 4 nm |
| Transmittance Error | ±0.5% |
| Transmittance Repeatability | ≤0.2% T |
| COD Range | 2–20,000 mg/L |
| COD Accuracy | ≤±5% |
| LOD (COD) | 2 mg/L |
| Optical Stability | ≤±0.005 Abs/20 min |
| Resolution | 0.001 Abs |
| Photometric System | Fiber-Optic Detection |
| Display | 5-inch HD Touchscreen |
| Calibration Modes | Single-point & Multi-point |
| Pre-stored Curves | 600 |
| Data Storage | 1,000,000 records |
| Power Supply | Rechargeable Li-ion Battery + AC Adapter |
| Housing Material | Corrosion-Resistant ABS |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | C3/25 |
| Instrument Type | Portable COD Analyzer Compatible |
| Measurement Range | 10–150 mg/L |
| Accuracy | ±5% (vs. certified COD standard) |
| Repeatability | ≤3% RSD |
| LOD | 10 mg/L |
| Analysis Time | 2 hours |
| Batch Capacity | 25 tests per kit |
| Compliance | EPA 410.4 & DIN 38409-H41 validated methods |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | WTW OxiTop®-i IS 6 BOD |
| Instrument Type | Laboratory Benchtop Analyzer |
| Measurement Principle | Manometric Respirometry (CO₂-absorbed pressure differential method) |
| Measurement Range | 0–40 mg/L (standard), up to 4,000 mg/L (via sample dilution or reduced volume) |
| Accuracy | <10% deviation from reference value |
| Repeatability | ≤ ±2.8% RSD |
| Measurement Duration | Programmable from 1 to 7 days |
| Sample Capacity | 6 independent channels |
| Display | Individual LCD graphic display per sensor head |
| Temperature Compensation | Automatic thermal equilibration delay (1–3 h) |
| Units | mg/L O₂, ΔhPa, hPa, digit |
| Compliance | Designed for ISO 5815-1:2019, EN 25815, and APHA Standard Methods 5210 B |
| Origin | Imported |
|---|---|
| Type | Benchtop Laboratory Analyzer |
| Model | PhotoLab® S6, PhotoLab® S12, photoLab® 6000 Series |
| Measurement Principle | Rapid Digestion Photometry |
| Wavelength Range | 436 nm, 525 nm, 580 nm, 610 nm, 690 nm (S6) |
| Measurement Range | 0–1000 mg/L COD |
| Accuracy | ±5% of reading |
| Repeatability | ≤5% RSD |
| Detection Limit | 0.1 mg/L COD |
| Analysis Time | ≤30 min per batch |
| Batch Capacity | 15 samples |
| Cuvette Recognition | Automatic barcode-based identification for round and rectangular cuvettes (10 mm, 20 mm, 50 mm path lengths) |
| Compliance | Designed for ASTM D1252, ISO 6060, EN 1484, and US EPA Method 410.4 workflows |