Environmental Monitoring Instruments
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| Brand | Leichi |
|---|---|
| Origin | Shanghai, China |
| Model | JPBJ-608 |
| Instrument Type | Portable |
| Measurement Principle | Polarographic Electrochemical Probe |
| DO Range | (0.00–50.00) mg/L |
| Accuracy | ±0.30 mg/L for values ≤20.00 mg/L |
| Resolution | 0.01 mg/L (DO), 0.1 °C/°F (temperature), 0.1% (saturation) |
| Response Time | ≤45 s (90% response at 20.0 °C) |
| Temperature Compensation | Automatic, with manual salinity compensation |
| Atmospheric Pressure Compensation | kPa, mmHg, atm selectable |
| IP Rating | IP65 |
| Data Storage | 500 sets |
| Power | Rechargeable Li-ion battery, USB-C charging support (DC5V input) |
| Dimensions | 80 × 225 × 35 mm |
| Weight | 0.4 kg |
| Brand | Leichi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China) |
| Model | JPBJ-609L |
| Instrument Type | Portable |
| Measurement Principle | Electrochemical Probe — Clark-type Polarographic |
| Measurement Range | (0.00–50.00) mg/L |
| Accuracy | ±0.10 mg/L (0.00–50.00 mg/L) |
| Resolution | 0.01 mg/L |
| Response Time | ≤45 s (90% response at 20 °C) |
| Temperature Compensation | Automatic/Manual (−10.0 to 135.0 °C) |
| Atmospheric Pressure Compensation | kPa, mbar, Torr, atm (manual/automatic) |
| Salinity Compensation | Manual (0–50 g/L) |
| DO Saturation Range | (0.0–600.0) % |
| IP Rating | IP65 |
| Power | Rechargeable Li-ion battery (USB-C input, DC5V adapter compatible) |
| Dimensions | 90 × 255 × 40 mm |
| Weight | 0.5 kg |
| Brand | Leichi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | JPBJ-610L |
| Instrument Type | Portable |
| Measurement Principle | Fluorescence Quenching |
| DO Range | (0.00–20.00) mg/L |
| Accuracy | ±0.30 mg/L (reading error) |
| Resolution | 0.01 mg/L |
| Repeatability | 0.15 mg/L |
| Zero Oxygen Error | ≤0.1 mg/L |
| Response Time | ≤60 s (90% response at 20 °C) |
| DO Saturation Range | (0.0–200.0)% |
| Saturation Accuracy | ±10.0% |
| Temperature Range | (0.0–50.0) °C |
| Temp. Resolution | 0.1 °C |
| Temp. Accuracy | ±0.3 °C |
| Salinity Compensation | Manual, (0.0–50.0) g/L |
| Atmospheric Pressure Compensation | Auto/Manual, (50.0–110.0) kPa |
| IP Rating | IP65 |
| Power | Rechargeable Li-ion battery |
| Dimensions | 90 × 255 × 40 mm |
| Weight | 0.5 kg |
| Brand | Leichi |
|---|---|
| Origin | Shanghai, China |
| Model | JPSJ-605F |
| Instrument Type | Laboratory Benchtop |
| Measurement Principle | Polarographic Electrochemical Probe |
| DO Range | 0.00–99.99 mg/L |
| DO Accuracy | ±0.10 mg/L |
| DO Resolution | 0.01 mg/L |
| Saturation Range | 0.0–600.0 % |
| Temperature Range | −10.0–135.0 °C |
| Temperature Accuracy | ±0.2 °C |
| Temperature Resolution | 0.1 °C |
| Atmospheric Pressure Compensation | Manual (60.0–110.0 kPa) |
| Salinity Compensation | Manual (0.0–40.0 g/L) |
| Data Storage Capacity | 500 datasets |
| Interface | RS-232 & USB |
| Power Supply | 9 VDC, 500 mA (center-positive) |
| Brand | Leichi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | JPSJ-605F |
| Instrument Type | Benchtop Laboratory Meter |
| Measurement Principle | Polarographic Electrochemical Probe |
| DO Range | (0.00–50.00) mg/L |
| Accuracy | ±0.30 mg/L (≤20.00 mg/L) |
| Repeatability | 0.15 mg/L |
| Detection Limit | 0.01 mg/L |
| Temperature Range | (−10.0 to 135.0) °C |
| Temp. Accuracy | ±0.3 °C (0.0–60.0 °C) |
| Response Time | ≤45 s (90% response at 20.0 °C) |
| Saturation Range | (0.0–600.0) % |
| Salt Compensation Error | ±2.0% saturation |
| IP Rating | IP54 |
| Interface | RS-232, USB |
| Data Storage | 500 sets |
| Power Supply | AC 100–240 V input / DC 9 V output |
| Dimensions | 242 × 195 × 68 mm |
| Weight | 0.9 kg |
| Brand | Leichi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Origin | Domestic (China) |
| Model | JPSJ-606L |
| Instrument Type | Benchtop Laboratory Meter |
| Measurement Principle | Electrochemical Polarographic Probe |
| DO Range (Instrument Electronics) | 0.00–90.00 mg/L |
| DO Range (with Standard Probe) | 0.00–50.00 mg/L |
| Accuracy (DO) | ±0.10 mg/L (electronic unit) |
| Repeatability | ≤0.15 mg/L |
| Detection Limit | 0.00 ± 0.10 mg/L |
| DO Saturation Range | 0.0–600.0 % |
| DO Saturation Resolution | 0.1 % |
| DO Saturation Accuracy | ±2.0 % |
| Temperature Range | −5.0–130.0 °C |
| Temperature Resolution | 0.1 °C |
| Temperature Accuracy | ±0.1 °C |
| Atmospheric Pressure Compensation | 60.0–110.0 kPa |
| Salinity Compensation | 0.0–50.0 g/L |
| Power Supply | 24 VDC, 3 A (via external adapter: 100–240 VAC input) |
| Dimensions (W×D×H) | 280 × 280 × 130 mm |
| Weight | 2.5 kg |
| Brand | Leichi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Domestic (China) |
| Model | JPSJ-606L |
| Instrument Type | Benchtop Laboratory Meter |
| Measurement Principle | Electrochemical Polarographic Probe |
| DO Range | (0.00–90.00) mg/L |
| Accuracy | ±0.10 mg/L (electronic unit), ±0.30 mg/L (full system) |
| Repeatability | ≤0.15 mg/L |
| Detection Limit | ±0.10 mg/L at zero |
| DO Saturation Range | (0.0–600.0) % |
| Saturation Accuracy | ±2.0 % |
| Temperature Range | (−5.0–130.0) °C |
| Temp. Accuracy | ±0.1 °C |
| Temp. Resolution | 0.1 °C |
| DO Resolution | 0.01 mg/L |
| Saturation Resolution | 0.1 % |
| Atmospheric Pressure Compensation | (60.0–110.0) kPa |
| Salinity Compensation | (0.0–50.0) g/L |
| Power Supply | 24 VDC, 3 A (AC Input: 100–240 VAC, 1.35 A) |
| Dimensions | 280 × 280 × 130 mm |
| Weight | 2.5 kg |
| Brand | Leichi |
|---|---|
| Model | PXSJ-227L |
| Type | Benchtop Multi-Ion Analyzer |
| Measurement Accuracy | Ion concentration displayed with four significant digits (scientific notation) |
| Temperature Range | (−5.0 to 130.0) °C |
| mV Range | (−2000.00 to +2000.00) mV |
| pH/pX Range | (−2.000 to 20.000) |
| pH/pX Resolution | 0.001 |
| mV Resolution | 0.01 mV |
| Temperature Resolution | 0.1 °C |
| Electronic Unit Error | ±0.002 pH/pX, ±0.03% FS for mV, ±0.3% for ion concentration, ±0.1 °C for temperature |
| Brand | Leichi |
|---|---|
| Origin | Shanghai, China |
| Model | SJG-208 |
| Instrument Type | Online DO Monitor |
| Measurement Range | (0.0–20.0) mg/L DO, (0.0–200.0)% saturation |
| Temperature Range | (−10.0–120.0) °C |
| Resolution | 0.01 mg/L (DO), 0.1% (saturation), 0.1 °C (temp) |
| Repeatability | ≤0.20 mg/L |
| Basic Error (Instrument) | ±0.50 mg/L (DO), ±10.0% (saturation), ±1.0 °C (temp) |
| Basic Error (Electronics Unit) | ±0.20 mg/L (DO), ±5.0% (saturation), ±0.3 °C ±1 digit |
| Stability | (±0.20 mg/L)/24 h (instrument), (±0.10 mg/L)/24 h (electronics) |
| T90 Response Time | ≤2 min at 20 °C |
| Output | Isolated 4–20 mA DC (configurable upper/lower limits), RS-232 or RS-485 (user-selectable) |
| Relay Outputs | 4 programmable control relays |
| Data Storage | 400 measurement records |
| Calibration | Zero-oxygen and full-scale calibration supported |
| Enclosure Rating | IP65 |
| Power Supply | AC (220 ± 22) V, (50 ± 0.5) Hz |
| Dimensions | 144 × 144 × 160 mm |
| Weight | 2.5 kg |
| Brand | Leichi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | SJG-750 |
| Pricing | Available Upon Request |
| pH Range | 0–14 pH, Resolution: 0.01 pH, Accuracy: ±0.05 pH ±1 digit |
| Conductivity Range | 0–200.0 mS/cm, Accuracy: ±1.5% FS |
| Dissolved Oxygen Range | 0.00–20.00 mg/L, Resolution: 0.01 mg/L, Sensor Error: ±0.2 mg/L |
| Turbidity Range | 0–1000 NTU, Resolution: 0.1 NTU, Linearity Error: ±5% |
| Temperature Range | 0.0–60.0 °C, Resolution: 0.1 °C, Accuracy: ±0.5 °C ±1 digit |
| Power Supply | AC 220 V ±10%, 50 Hz ±2% |
| Dimensions | 285 × 205 × 97 mm, Weight: 3 kg |
| Brand | Leichi |
|---|---|
| Origin | Shanghai, China |
| Model | SJG-791 |
| Instrument Type | Online Analyzer |
| Measurement Principle | Electrochemical Amperometric Sensor |
| Measured Parameter | Free Residual Chlorine |
| Range | 0.00–20.00 mg/L |
| Accuracy | ±10% (≥0.5 mg/L) or ±0.05 mg/L (<0.5 mg/L) |
| Resolution | 0.01 mg/L (Cl₂), 0.01 pH, 0.1 °C |
| pH Range | 0.00–14.00 pH |
| Temperature Range | 0.0–60.0 °C |
| pH Accuracy | ±0.05 pH |
| Temp Accuracy | ±0.5 °C |
| Linear Error | ±3.0% FS (Cl₂) |
| Electronic Unit Stability | ±1% FS/24 h |
| 90% Response Time | 2 min |
| Enclosure Rating | IP65 |
| Power Supply | AC 220 V ±10%, 50 Hz |
| Dimensions | 166 × 166 × 110 mm |
| Weight | 2 kg |
| Output | Dual isolated 4–20 mA DC (configurable for Cl₂ or pH), RS-232/RS-485 (Modbus RTU) |
| Data Storage | 2000 records |
| Auto Compensation | pH and temperature compensated for residual chlorine measurement |
| Alarm | Configurable upper/lower limits with hysteresis |
| Power Failure Protection | Yes |
| Brand | Leichi |
|---|---|
| Origin | Shanghai, China |
| Model | SJG-9435B |
| Instrument Type | Online Analyzer |
| Measurement Range | (0–19.9) µg/L, (20–199) µg/L, (0.20–20.00) mg/L |
| Repeatability | ±3% FS |
| Resolution | 0.1 µg/L / 1 µg/L / 0.01 mg/L (DO) |
| Basic Error (Electronic Unit) | ±3% FS (DO), ±0.3 °C (Temperature) |
| Response Time (t₉₀) | 2 min at 25 °C |
| Enclosure Rating | IP65 |
| Power Supply | AC 220 V ±10%, 50 Hz |
| Dimensions | 160 × 160 × 110 mm |
| Weight | 2 kg |
| Brand | Leichi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | TN-586 |
| Pricing | Upon Request |
| Measurement Method | Alkaline Potassium Persulfate Digestion–UV Spectrophotometry |
| Measurement Range | 0–150.0 mg/L (customizable extension available) |
| Accuracy | ±10% of reading |
| Detection Limit | 0.1 mg/L |
| Resolution | 0.1 mg/L |
| Compliance | GB 11894–1989 |
| Repeatability | ≤±10% |
| Minimum Cycle Time | 40 min |
| Sampling Interval | 10–9999 min (programmable) + On-the-Hour Mode |
| Calibration Options | Manual & Automatic |
| Output Interfaces | RS232, RS485, 4–20 mA analog |
| Field Sample Comparison Error | ≤±10% |
| Dimensions | 1430 × 500 × 403 mm |
| Brand | Leichi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | TN-586 |
| Price | USD 12,300 (FOB Shanghai) |
| Measurement Method | Alkaline Potassium Persulfate Digestion with UV Spectrophotometry |
| Measurement Range | 0–150.0 mg/L (customizable extension available) |
| Accuracy | ±10% of reading |
| Detection Limit | 0.1 mg/L |
| Resolution | 0.1 mg/L |
| Compliance | GB 11894–1989 |
| Measurement Cycle | ≥40 min |
| Sampling Interval | 10–9999 min (programmable) or fixed-time mode |
| Calibration Modes | Manual and Automatic |
| Output Interfaces | RS-232, RS-485, 4–20 mA analog |
| Real-sample Comparison Error | ≤±10% |
| Dimensions | 1430 × 500 × 403 mm |
| Brand | LeiCi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Region Category | Domestic (China) |
| Model | BOD-573 |
| Price Range | USD 1,400 – 7,200 |
| Instrument Type | Laboratory BOD Analyzer |
| Measurement Principle | Differential Pressure Method |
| Measurement Range | 0–4000 mg/L |
| Accuracy | Compliant with HJ 505–2009 and ISO 5815-1:2019 for BOD₅ determination (validated using glucose-glutamic acid standard solution, BOD₅ = 180–230 mg/L) |
| Sample Capacity | Up to 6 samples per run |
| Incubation Duration | Programmable from 1 to 30 days |
| Data Retention | 10 years of BOD₅ result records |
| Cultivation Vessel Volume | 580 mL |
| Temperature Control | 20 ± 1 °C |
| Power Supply | AC 110–220 V, 50/60 Hz |
| Rated Power | 10 W |
| Dimensions (W × D × H) | 272 × 185 × 75 mm |
| Net Weight | 2.4 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | BOD-573 |
| Instrument Type | Laboratory BOD Analyzer |
| Measurement Principle | Pressure Differential Method |
| Measurement Range | 0–4000 mg/L |
| Accuracy | Complies with HJ 505–2009 for BOD₅ precision validation (glucose–glutamic acid standard solution: BOD₅ = 180–230 mg/L) |
| Sample Capacity | ≤6 samples per run |
| Incubation Duration | 1–30 days programmable |
| Data Storage | 10 years of BOD₅ result records |
| Cultivation Vessel Volume | 580 mL |
| Temperature Control | 20 ±1 °C |
| Power Supply | AC 110–220 V, 50/60 Hz |
| Rated Power | 10 W |
| Dimensions | 272 × 185 × 75 mm |
| Net Weight | 2.4 kg |
| Temperature Range | 0–190 °C |
|---|---|
| Temperature Accuracy | ±2 °C |
| Capacity | 6 Samples |
| Power Options | AC 220 V / 12 V DC (cigarette lighter socket) / Optional High-Capacity Rechargeable Battery |
| Dimensions | Compact, Field-Deployable Form Factor |
| Origin | Shanghai, China |
| Instrument Type | Portable Digestion Unit for COD Analysis |
| 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 | Authorized Distributor |
| Country of Origin | China |
| Model | COD-571-1 |
| Digestion Method | Reflux Digestion |
| Heating Module | Aluminum Alloy Block with PID Temperature Control |
| Batch Capacity | 21 Samples |
| Temperature Range | 100–165 °C |
| Time Setting Range | 0–120 min |
| Safety Features | Over-Temperature Alarm, Auto Power-Off upon Completion |
| Design | Compact Benchtop Unit with Sealed Reflux Assembly |
| 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 | Original Equipment Manufacturer (OEM) |
| Product Category | Domestic |
| Model | COD-583 |
| Pricing | USD 12,300 (FOB Shanghai) |
| Measurement Principle | Potassium Permanganate Oxidation with ORP Endpoint Detection |
| Instrument Type | Online Continuous Analyzer |
| Repeatability | ≤ ±5% RSD |
| Accuracy | ±10% of reading (as per GB/T 11892–1989) |
| Power Failure Recovery | Yes |
| Remote Connectivity | Ethernet & Modbus TCP |
| Calibration Verification | Automated Zero & Span Check |
| Fluidic Architecture | Sequential Injection with Multi-Position Rotary Valve |
| Tubing Material | FEP (fluorinated ethylene propylene), ID ≥ 1.0 mm |
| Diagnostic Capability | Embedded Self-Diagnostic Routine |
| Maintenance Interval | ≥ 30 days under standard operation |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Domestic (China) |
| Model | COD-583 |
| Price | USD 16,500 (FOB Shanghai) |
| Measurement Principle | Potassium Permanganate Oxidation with ORP Endpoint Detection |
| Instrument Type | Online Analyzer |
| Repeatability | ≤ ±5% |
| Accuracy | ±10% of Full Scale (Actual Water Sample Comparison) |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | DGB-401 |
| Instrument Type | Portable/HANDHELD Water Quality Analyzer |
| Detection Principle | Spectrophotometry (LED-based, 420 nm / 470 nm / 620 nm / 650 nm) |
| Measured Parameters | Ammonia-Nitrogen, High-Range COD, Low-Range COD, Total Phosphorus, Total Nitrogen |
| Ammonia-Nitrogen Range | 0.000–10.00 mg/L |
| Repeatability | ±3% |
| IP Rating | IP65 |
| Data Storage | 1,000 total entries (200 per parameter) |
| Power Supply | Rechargeable Li-ion battery with USB/PC charging and low-voltage warning |
| Interface | RS-232 printer port, USB for PC communication |
| Compliance | GLP-compliant data traceability, audit-ready data management |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Country of Origin | China |
| Model | DGB-401 |
| Instrument Type | Portable / Handheld Water Quality Analyzer |
| Measurable Parameters | Total Phosphorus, Low-Range COD, High-Range COD, Total Nitrogen, Ammonia-Nitrogen |
| Light Sources | 420 nm, 470 nm, 620 nm, 650 nm LEDs |
| Calibration Points | 2–6 points |
| Data Storage | 1,000 total entries (200 per parameter) |
| Optical Cell | 16 mm and 25 mm round cuvettes |
| Power Supply | Rechargeable Li-ion battery (DC 5 V input, AC 100–240 V compatible) |
| Protection Rating | IP65 |
| Dimensions | 100 × 240 × 80 mm |
| Weight | 0.6 kg |
| Measurement Principles | Nesslerization (NH₃-N), Dichromate Oxidation (COD), Molybdate Blue (TP), Alkaline Persulfate Digestion + Chromotropic Acid (TN) |
| Compliance | GLP-compliant data traceability, RS-232 and USB interfaces for audit-ready data export |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | DGB-401 |
| Instrument Type | Portable/Handheld Water Quality Analyzer |
| Measurable Parameters | Ammonia-N, Low-Range COD, High-Range COD, Total Phosphorus (TP), Total Nitrogen (TN) |
| Measurement Principles | Nesslerization (NH₃-N), Dichromate Oxidation (COD), Molybdate Blue Spectrophotometry (TP), Persulfate Digestion + UV Absorption or Colorimetry (TN) |
| Wavelengths | 420 nm, 470 nm, 620 nm, 650 nm (LED sources) |
| Detection Range (NH₃-N) | 0.000–10.00 mg/L (extendable to 300 mg/L) |
| (Low-COD) | 0.000–150.0 mg/L |
| (High-COD) | 150.0–1500 mg/L |
| (TP) | 0.000–1.000 mg/L (extendable to 25 mg/L) |
| (TN) | 0.000–30.00 mg/L (extendable to 300 mg/L) |
| Accuracy | ±5% (NH₃-N), ±8% (COD), ±10% (TP), ≤10 mg/L: ±1 mg/L |
| >10 mg/L | ±5% (TN) |
| Repeatability | 2–3% RSD |
| Calibration | 2–6 point user-defined or built-in calibration curves |
| Data Storage | 200 groups per parameter (1000 total) |
| Cuvette Types | 16 mm and 25 mm round tubes |
| Power Supply | Rechargeable Li-ion battery |
| AC/DC adapter (Input | AC 100–240 V |
| Output | DC 5 V) |
| Protection Rating | IP65 |
| Dimensions (L×W×H) | 100 × 240 × 80 mm |
| Weight | 0.6 kg |
| Packaging Dimensions | 490 × 410 × 220 mm |
| Gross Weight | 4.5 kg |
| Compliance | GLP-compliant data logging with audit trail support |