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| Brand | LeiCi |
|---|---|
| Model | DGB-423 |
| Measurement Parameter | Ammonia-Nitrogen (NH₃-N) |
| Method | Nesslerization Spectrophotometry |
| Light Source | 420 nm LED |
| Range | 0.000–4.000 mg/L |
| Accuracy | ±10% FS |
| Repeatability | ≤3% RSD |
| Sample Vessel | 16 mm OD × 100 mm glass cuvette (10 mL) |
| Dimensions | 220 × 85 × 50 mm |
| Weight | 0.4 kg |
| Operating Environment | 5–35 °C, 0–85% RH |
| Power Supply | 4 × AA alkaline batteries or USB 5 V DC |
| Display | Backlit LCD with adjustable contrast and backlight timeout |
| Protection Rating | IP65 |
| Calibration | Up to 5-point user-defined calibration |
| Data Management | GLP-compliant storage, review, deletion, and print export via USB |
| Firmware Upgradeable | Yes |
| Compliance | Supports audit-trail-ready data handling per GLP requirements |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | DWG-8002A |
| Instrument Type | Online Analyzer |
| Measurement Principle | Ammonia Gas-Sensing Electrode Method |
| Measurement Range | 0.05–1000.00 mg/L NH₃–N |
| Accuracy | ±0.2 mg/L (≤2.00 mg/L) |
| Repeatability | ≤2.0% (0.10–10.00 mg/L), ≤5.0% (10.00–1000.00 mg/L) |
| Drift (24 h) | ≤0.02 mg/L (low range), ≤2% (high range) |
| Minimum Detection Limit | ≤0.15 mg/L |
| Output Signal | Isolated 4–20 mA DC (max load 600 Ω), RS-485 |
| Data Storage | 4000 measurement records + 500 calibration logs |
| Power Supply | AC 220 V ±10%, 50 Hz |
| Dimensions | 470 × 325 × 700 mm (L×W×H) |
| Weight | ~32 kg (dry) |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | DGB-404F |
| Instrument Type | Portable/Handheld Colorimetric Water Quality Analyzer |
| Measurement Principle | DPD (N,N-Diethyl-p-phenylenediamine) Colorimetric Method |
| Wavelength | 545 nm LED Source |
| Measurement Range | 0.00–2.00 mg/L Cr(VI) |
| Accuracy | ±0.05 mg/L (≤1 mg/L) |
| Detection Limit | ≤0.02 mg/L |
| Calibration Points | Up to 5-point user-defined calibration |
| Data Storage | 200 measurement records with timestamp, operator ID, and calibration metadata |
| Cuvette Format | 16 mm round glass or plastic tubes |
| Power Supply | 4 × AA alkaline batteries (1.5 V) or USB 5 V DC |
| IP Rating | IP65 |
| Dimensions (L×W×H) | 230 × 85 × 50 mm |
| Weight | ~0.4 kg |
| Compliance | Supports GLP data integrity requirements (audit trail-capable storage, user authentication via ID entry) |
| 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 | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | SJG-702 |
| Measurement Principles | pH & conductivity & TDS (electrode method), turbidity (90° light scattering), free/total chlorine & chlorine dioxide (amperometric membrane electrode) |
| Measurement Ranges | pH 0.00–14.00 (±0.05 pH) |
| Compliance | CE, RoHS |
| Power Supply | AC 220 V ±10%, 50 Hz (solar option available) |
| Dimensions | 730 × 520 × 330 mm |
| Weight | 20 kg |
| Communication | RS-232 / RS-485 |
| 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 |
| Country of Origin | China |
| Model | DGB-422 |
| Instrument Type | Portable |
| Measurement Principle | Colorimetric Method (LED-based Photometry) |
| Measurement Range | 0.000–500.0 mg/L (Ammonia Nitrogen) |
| Accuracy | ±5 mg/L |
| Display | Backlit LCD with Adjustable Contrast & Timeout |
| Protection Rating | IP65 |
| Power Supply | 4 × AA Alkaline Batteries or USB 5V DC |
| Dimensions | 220 × 85 × 50 mm |
| Weight | ~0.4 kg |
| Operating Environment | 5–35 °C, 0–85% RH (non-condensing) |
| Cuvette Format | 16 mm OD × 100 mm, 10 mL capacity |
| Calibration | Up to 5-point user-defined calibration |
| Data Management | GLP-compliant storage, recall, deletion, and print export via USB |
| Supported Parameters | Ammonia Nitrogen, Total Hardness (Ca²⁺/Mg²⁺), Urea, Total Phosphorus, COD (Permanganate Index), Residual Chlorine, Total Chlorine, Chlorine Dioxide, Aluminum, etc. |
| 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 | 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 |
| 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 | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | SJB-801 |
| Instrument Type | Portable |
| Detection Principle | Anodic Stripping Voltammetry (ASV) |
| Detectable Metals | Pb, Cd, Cu, As, Hg, Zn, Se, Mn, Ni (9 elements) |
| Analysis Time | ≤3 min per sample |
| Accuracy | ±5% (or ±5.0 µg/L for elements ≤100 µg/L |
| Resolution | 0.1 µg/L |
| Detection Limits | Pb/Cd/Cu/As ≤0.5 µg/L |
| Repeatability | RSD ≤3% |
| Data Storage Capacity | 2000 measurement records |
| IP Rating | IP65 |
| Power Options | 4×AA Ni-MH rechargeable batteries, USB power supply (5 V), external mobile power bank, or AC adapter (compatible with standard smartphone chargers) |
| Compliance | GLP-compliant data management, ASTM D3559, ISO 8692, USP <232>/<233>, and EPA Method 7000B (ASV adaptation) |
| 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 | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | DZB-712F |
| Instrument Type | Portable / Handheld Water Quality Analyzer |
| Measured Parameters | pH, Conductivity, Dissolved Oxygen (DO) |
| IP Rating | IP65 |
| Display | High-resolution color LCD touchscreen |
| Data Storage | 1000 datasets per parameter |
| Compliance | GLP-compliant data logging |
| Power | Rechargeable Li-ion battery (DC5V input) |
| Dimensions | 90 × 255 × 40 mm |
| Weight | 0.5 kg |
| pH Accuracy | ±0.01 pH |
| Conductivity Accuracy | ±1.0% FS |
| DO Accuracy | ±0.30 mg/L (≤20.00 mg/L), ±10.0% (>20.00 mg/L) |
| Temperature Range | −5.0 to 110.0 °C |
| Auto-Temperature Compensation | Yes (pH, conductivity, DO) |
| Electrode Interfaces | Triple-combined pH electrode, composite conductivity electrode, polarographic DO electrode |
| [Brand | LeiCi |
|---|---|
| Origin | Shanghai, China |
| Model | DGB-480 |
| Instrument Type | Portable Water Quality Analyzer |
| Detection Parameters | Turbidity, Color, Transmittance, Ozone, Nitrite Nitrogen, Urea, Hexavalent Chromium, Manganese, Total Nitrogen, Nitrate Nitrogen, Nitrate, Formaldehyde, Water Hardness, Zinc, Nitrite, Free Chlorine, Total Chlorine, Chlorine Dioxide, Permanganate Index, Low-Concentration COD<sub>Cr</sub>, High-Concentration COD<sub>Cr</sub>, Cadmium, Ammonia Nitrogen, Ammonium Ion, Total Phosphorus, Total Phosphate, Nickel, Ferrous Ion, Iron, Sulfite |
| Wavelengths | 365 nm, 420 nm, 470 nm, 515 nm, 540 nm, 620 nm, 650 nm, 850 nm |
| Turbidity Measurement | 90° scattered light (ISO 7027 compliant) |
| Colorimetric Cell Compatibility | Φ16 mm cuvettes or Φ25 mm vials |
| Data Storage Capacity | 2000 measurement records |
| Power Supply | Rechargeable Li-ion battery (DC 5 V input support) |
| Dimensions | 105 × 241 × 90 mm |
| Weight | 0.6 kg |
| Compliance | GLP-compliant data traceability, ISO 7027 for turbidity] |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | PXBJ-287L |
| Instrument Type | Portable |
| Ion Measurement Range | (−2.000 to 20.000) pX |
| Resolution | 0.001 pX |
| Temperature Range | (−10.0 to 135.0) °C / (14.0 to 275.0) °F |
| pH Range | (−2.000 to 20.000) pH |
| mV Range | (−2000.00 to 2000.00) mV |
| Resolution (mV) | 0.01 mV |
| Accuracy (pH/pX) | ±0.002 pH/pX |
| Accuracy (mV) | ±0.03% or ±0.1 mV |
| Accuracy (Temperature) | ±0.1 °C |
| IP Rating | IP65 |
| Battery | Rechargeable Li-ion |
| Dimensions | 90 × 255 × 40 mm |
| Weight | 0.5 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 |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | SJG-792 |
| Instrument Type | Online Analyzer |
| Measurement Principle | Electrochemical Amperometric Sensor Method |
| Measured Parameters | Residual Chlorine, Total Chlorine |
| Range | (0.00–5.00) mg/L |
| Accuracy | ±5% (for values >1 mg/L) or ±0.05 mg/L (for values ≤1 mg/L) |
| Repeatability | ±0.025 mg/L (≤1 mg/L) |
| Resolution | 0.01 mg/L |
| Limit of Detection (LOD) | ≤0.05 mg/L |
| Display | Dot-matrix LCD |
| Data Storage | Up to 700 records with SD card export |
| Output | Isolated 4–20 mA DC (configurable span), RS-232 or RS-485 (Modbus RTU) |
| Ingress Protection | IP65 |
| Power Supply | AC (220 ± 22) V, (50 ± 0.5) Hz |
| Calibration Options | Factory pre-loaded calibration curves, manual zero + up to two-point span calibration, in-process calibration support |
| Alarm Functions | Programmable high/low concentration thresholds |
| Diagnostics | Built-in self-diagnostic system |
| Power Failure Protection | Non-volatile memory retention |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | TP-585 |
| Measurement Parameter | Total Phosphorus |
| Instrument Type | Online Analyzer |
| Measurement Range | 0–50 mg/L |
| Accuracy | ±10% of reading |
| Repeatability | ≤±10% |
| Minimum Measurement Cycle | 40 min (adjustable from 5–120 min) |
| Digestion Time | Configurable |
| Sampling Interval | 20–9999 min (programmable) or on-the-hour mode |
| Calibration Interval | 1–99 days (user-defined) |
| Maintenance Interval | ~30 min per month |
| Analog Output | 1 × 4–20 mA (optional 2 channels) |
| Communication Interface | RS232 or RS485 |
| Digital I/O | 1–6 relay outputs (220 VAC / 2 A) |
| Operating Environment | +5 to +28 °C, ≤99% RH (non-condensing) |
| Power Supply | AC 220 V ±10%, 50 Hz ±1%, 5 A |
| Dimensions | 1430 × 500 × 403 mm |
| MTBF | ≥720 h |
| Data Retention | Non-volatile memory preserves settings and logs during power loss |
| Display & Control | Integrated touch screen interface |
| Self-Diagnostic Capability | Real-time fault detection with alarm prompts |
| Auto-Cleaning | Integrated sampling line cleaning function |
| Valve System | Multi-port corrosion-resistant valve assembly |
| Tubing | Imported modified PTFE transparent tubing (ID >1.5 mm) |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | DZB-715 |
| Instrument Type | Portable/Handheld Water Quality Analyzer |
| Measured Parameters | Water Temperature, pH/ORP, Conductivity/Salinity, Dissolved Oxygen, Depth |
| Measurement Range | pH (0.00–14.00), ORP (−1999.9–+1999.9 mV), Conductivity (0–200 mS/cm), Salinity (0.0–8.0 %), DO (0.00–19.99 mg/L), Temp (−5.0–70.0 °C), Depth (0.00–10.00 m) |
| Accuracy | pH ±0.10, ORP ±20.0 mV, Conductivity ±1.0% FS, DO ±0.30 mg/L, Temp ±0.5 °C, Depth ±0.05 m |
| Resolution | pH 0.01, ORP 0.1 mV, Conductivity down to 0.001 μS/cm, DO 0.01 mg/L, Temp 0.1 °C, Depth 0.01 m |
| Display | 3.5″ TFT color touchscreen |
| Data Storage | 5000 sets with GLP-compliant metadata |
| IP Rating | IP67 |
| Battery | Rechargeable Li-ion |
| Standard Cable Length | 10 m (customizable up to 100 m) |
| Interfaces | USB, RS485 |
| Optional | GPS module, GPRS data transmission |
| Brand | LeiCi |
|---|---|
| Model | DGB-427 |
| Measurement Parameter | Aluminum (Al) |
| Method | Chromazurol S Spectrophotometry |
| Light Source | 620 nm LED |
| Range | 0.000–0.300 mg/L |
| Accuracy | ±0.015 mg/L |
| Repeatability | ≤0.005 mg/L |
| Sample Vessel | 10 mL, Ø16 mm × 100 mm glass cuvette |
| Dimensions | 220 × 85 × 50 mm |
| Weight | 0.4 kg |
| Operating Temperature | 5–35 °C |
| Relative Humidity | 0–85 % RH (non-condensing) |
| Power Supply | 4 × AA alkaline batteries or USB 5 V DC |
| IP Rating | IP65 |
| Data Compliance | GLP-compliant data logging with timestamp, operator ID, and calibration history |
| Connectivity | USB interface for PC communication and printer output |
| Calibration | Up to 5-point user-defined calibration |
| Display | Backlit LCD with adjustable contrast and backlight timeout |
| [Brand | LeiCi |
|---|---|
| Origin | Shanghai, China |
| Model | DGB-402F |
| Instrument Type | Portable |
| Measurement Principle | DPD Spectrophotometry |
| Measurable Parameters | Residual Chlorine, Total Chlorine |
| Range | 0–5 mg/L |
| Accuracy | ±0.05 mg/L (≤1 mg/L) |
| Repeatability | ≤2.0% |
| Resolution | Concentration: 0.001 mg/L |
| Absorbance | 0.001 ABS |
| LOD | ≤0.02 mg/L |
| Wavelength | 515 nm LED |
| Calibration | 1–3 point user-defined or factory-default curves |
| Data Storage | 200 entries per parameter |
| Protection Rating | IP65 |
| Operating Temperature | 5–35 °C |
| Relative Humidity | ≤85% RH |
| Power | Rechargeable Li-ion battery |
| Dimensions | 85 × 230 × 50 mm |
| Weight | ~0.5 kg] |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | SJG-205 |
| Pricing | Available Upon Request |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | PXSJ-226T |
| Instrument Type | Benchtop |
| Ion Measurement Range | 1.00×10⁻⁹ to 9.99×10⁹ (selectable units: mol/L, mmol/L, g/L, mg/L, μg/L, ppm) |
| Detection Limit | 1.00×10⁻⁹ to 9.99×10⁹ (same unit options) |
| Response Time | ≤5 s |
| Accuracy Class | 0.001 |
| Temperature Range | −10.0 to 135.0 °C (14.0 to 275.0 °F) |
| 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/°F |
| Dimensions | 220 × 195 × 68 mm |
| Weight | 0.95 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 |
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