Water Quality Analysis
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| 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 |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | DGB-402A |
| Instrument Type | Portable |
| Measurement Principle | DPD Colorimetric Spectrophotometry (515 nm LED) |
| Measured Parameters | Residual Chlorine, Total Chlorine |
| Range | (0.02–3.00) mg/L |
| Accuracy | ±3% or ±0.02 mg/L |
| Repeatability | ≤1% RSD |
| Resolution | 0.01 mg/L (concentration), 0.001 ABS (absorbance) |
| LOD | ≤0.02 mg/L |
| Light Source | Long-life 515 nm LED |
| Calibration | Single-point calibration with built-in standard curves and user-defined calibration support |
| Data Storage | 200 measurement records with review/delete functions |
| Power Supply | Rechargeable Li-ion battery |
| Dimensions & Weight | 80 × 200 × 75 mm, 0.4 kg |
| Enclosure Rating | IP65 |
| Accessories Included | DPD reagent kits for residual/total chlorine, portable protective carrying case, USB cable, AC adapter, and calibration standards |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | DGB-402A |
| Instrument Type | Portable Colorimeter |
| Measurement Principle | DPD Spectrophotometric Method |
| Measured Parameters | Residual Chlorine, Total Chlorine |
| Range | (0.02–3.00) mg/L |
| Accuracy | ±3% or ±0.02 mg/L |
| Repeatability | ≤1% |
| Resolution | 0.01 mg/L |
| Detection Limit | ≤0.02 mg/L |
| Light Source | 515 nm LED |
| Wavelength Accuracy | Fixed at 515 nm |
| Cuvette Size | 25 mm diameter |
| Data Storage | 200 measurement records |
| 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) | 80 × 200 × 75 mm |
| Weight | 0.4 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | DGB-402F |
| Instrument Type | Portable |
| Measurement Principle | DPD Spectrophotometry |
| Measured Parameters | Residual Chlorine, Total Chlorine |
| Range | 0–3.00 mg/L (Residual & Total Chlorine) |
| Accuracy | ±3% or ±0.02 mg/L |
| Repeatability | ≤1.0% |
| Resolution | 0.001 mg/L (Concentration), 0.001 ABS (Absorbance) |
| LOD | ≤0.02 mg/L |
| Wavelength | 515 nm |
| Calibration | 1–3 Point Calibration |
| Data Storage | 200 Sets Each for Residual and Total Chlorine |
| Cuvette Size | 25 mm Round Cell |
| Operating Temperature | 5–35 °C |
| Relative Humidity | ≤85% RH |
| Power Supply | Rechargeable Lithium Battery |
| Dimensions (L×W×H) | 230 × 85 × 50 mm |
| Weight | ~0.5 kg |
| IP Rating | IP65 |
| [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 | Direct Manufacturer |
| Product Category | Domestic (China-Made) |
| Model | DGB-403F |
| Instrument Type | Portable |
| Measurement Principle | DPD Colorimetric Spectrophotometry (515 nm & 420 nm LED Sources) |
| Measured Parameters | Residual Chlorine (LR/HR), Total Chlorine (LR/HR), Chlorine Dioxide (LR/HR), Monochloramine (LR/HR), Chlorite, Chlorate, Hydrogen Peroxide |
| Residual Chlorine HR Range | 0.20–12.0 mg/L |
| Accuracy (Residual Cl₂ HR) | ±0.1 mg/L or ±5% |
| Repeatability (Residual Cl₂ HR) | ≤1% |
| Resolution (Residual Cl₂ HR) | 0.1 mg/L |
| LOD (Residual Cl₂ HR) | ≤0.2 mg/L |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | DGB-403F |
| Instrument Type | Portable |
| Measurement Principle | DPD Spectrophotometry |
| Measurable Parameters | Residual Chlorine (LR/HR), Total Chlorine (LR/HR), Chlorine Dioxide (LR/HR), Monochloramine (LR/HR), Chlorite, Chlorate, Hydrogen Peroxide |
| Residual Chlorine HR Range | 0.20–12.0 mg/L |
| Accuracy (Residual Cl₂ HR) | ±0.1 mg/L or ±5% |
| Repeatability (Residual Cl₂ HR) | ≤1% |
| Resolution (Residual Cl₂ HR) | 0.1 mg/L |
| LOD (Residual Cl₂ HR) | ≤0.2 mg/L |
| 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 | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Manufacturer |
| Country of Origin | China |
| Model | DGB-405F |
| Instrument Type | Portable / Handheld Water Quality Analyzer |
| Measured Parameter | Water Hardness |
| Measurement Principle | Calcium-Magnesium Colorimetry (at 515 nm) |
| Range | (3.00–20.0) mg/L, (20.0–100) mg/L, (100–500) mg/L as CaCO₃ |
| Accuracy | ±5% or ±3 mg/L as CaCO₃ |
| Repeatability | ≤2.0% |
| LOD | <3 mg/L as CaCO₃ |
| Operating Temp. | 5–35 °C |
| RH | ≤85% |
| Power | Rechargeable Li-ion battery |
| Dimensions | 100 × 245 × 90 mm |
| Weight | ~0.5 kg |
| IP Rating | IP65 |
| Data Storage | 600 groups (200 per range) |
| Interface | USB, RS-232 |
| Compliance | GLP-compliant data traceability |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Origin | Domestic (China) |
| Model | DGB-422 |
| Instrument Type | Portable |
| Measurement Principle | Colorimetry |
| Measurement Range | 0.000–500.0 mg/L |
| Accuracy | ±5 mg/L |
| Display | Backlit LCD with Adjustable Contrast & Backlight Duration |
| Protection Rating | IP65 |
| Calibration | Up to 5-point calibration |
| Data Management | GLP-compliant storage, recall, deletion, and print export |
| Power Supply | 4 × AA alkaline batteries or USB-powered |
| Interface | USB for PC/printer connectivity |
| Operating Environment | 5–35 °C, 0–85% RH |
| Dimensions | 220 × 85 × 50 mm |
| Weight | ~0.4 kg |
| Cuvette Specification | Ø16 mm × 100 mm, 10 mL capacity |
| 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 | Manufacturer |
| Country of Origin | China |
| Model | DGB-423 |
| Instrument Type | Portable / Handheld Water Quality Analyzer |
| Measured Parameter | Ammonia-Nitrogen (NH₃-N) |
| Measurement Method | Nesslerization |
| Light Source | 420 nm LED |
| Range | 0.000–4.000 mg/L NH₃-N |
| Accuracy | ±10% of reading |
| Repeatability | ≤3% RSD |
| Sample Vessel | 16 mm OD × 100 mm glass cuvette (10 mL capacity) |
| 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 |
| Data Management | GLP-compliant storage, review, deletion, and print export via USB |
| Calibration | Up to 5-point user-defined calibration |
| Firmware Upgradeable | Yes |
| 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 | DGB-425 |
| Principle | Potassium Permanganate Oxidation with ORP Endpoint Detection |
| Type | Portable |
| Range | 0.000–10.00 mg/L |
| Repeatability | ≤2.0% RSD |
| Accuracy | ±5% FS |
| LOD | 0.5 mg/L |
| Resolution | 0.001 mg/L |
| Single-test Duration | 30 min |
| Light Source | LED at 540 nm |
| Cuvette | 16 mm OD × 100 mm, 10 mL capacity |
| Dimensions | 220 × 85 × 50 mm |
| Weight | 0.4 kg |
| Operating Temp. | 5–35 °C |
| RH | 0–85% |
| Power | 4 × AA alkaline batteries or USB 5 V DC |
| Display | Backlit LCD with adjustable contrast and backlight timeout |
| IP Rating | IP65 |
| Data Management | GLP-compliant storage, review, deletion, print export via USB |
| Calibration | Up to 5-point user-defined calibration |
| Firmware Upgradeable | Yes |
| 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-428 |
| Measurement Parameter | Total Phosphorus |
| Instrument Type | Portable |
| Measurement Principle | Molybdate Spectrophotometry (650 nm LED) |
| Measurement Range | 0.000–1.000 mg/L |
| Accuracy | ≤ ±10% |
| Detection Limit | 0.05 mg/L |
| Resolution | 0.001 mg/L |
| Calibration | Up to 5-point user-defined calibration |
| Display | Backlit LCD with adjustable contrast and backlight duration |
| Protection Rating | IP65 |
| Power Supply | 4 × AA alkaline batteries or USB 5 V DC |
| Interface | USB for data transfer, printer connection, and firmware update |
| Operating Environment | 5–35 °C, 0–85% RH |
| Dimensions | 220 × 85 × 50 mm |
| Weight | ~0.4 kg |
| Cuvette | 16 mm OD × 100 mm, 10 mL capacity |
| Data Management | GLP-compliant storage, review, deletion, and print export |
| Brand | LeiCi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Product Category | Domestic |
| Model | DGB-480 |
| Instrument Type | Portable / Handheld 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 |
| Measurement Modes | Concentration (mg/L), Absorbance (Abs), Transmittance (%) |
| Compliance | ISO 7027 (turbidity), GLP data traceability |
| Data Storage | 2000 records |
| Power Supply | Rechargeable Li-ion battery (DC 5 V input, AC 100–240 V adapter) |
| Dimensions | 105 × 241 × 90 mm |
| Weight | 0.6 kg |
| IP Rating | IP65 |
| Display | Color LCD touchscreen |
| Sample Vessels | Φ16 mm cuvettes or Φ25 mm vials |
| [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 |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | DGB-480 |
| Instrument Type | Portable / Handheld Water Quality Analyzer |
| Detection Principle | Colorimetry |
| Detection Parameters | Turbidity, Color, Transmittance Ratio, 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 |
| Measurement Range | Ammonia Nitrogen 0.03–10.00 mg/L |
| Repeatability | ≤0.5% |
| 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 | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DOB-612Y |
| Instrument Type | Portable |
| Measurement Principle | Fluorescence Quenching |
| Dissolved Oxygen Range | 0.00–20.00 mg/L |
| Accuracy | ±0.30 mg/L |
| Resolution (DO) | 0.01 mg/L |
| Repeatability | 0.15 mg/L |
| Zero 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. Accuracy | ±0.2 °C (10–30 °C) |
| Temp. Resolution | 0.1 °C |
| Salinity Compensation Error | ±2% |
| IP Rating | IP67 |
| Dimensions | 92 × 263 × 49 mm |
| Weight | ~0.6 kg |
| Power | Rechargeable Li-ion battery + DC 5 V adapter (AC 100–240 V input) |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Country of Origin | 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 Modbus RTU |
| Data Storage | 4000 measurement records, 500 calibration logs |
| Power Supply | AC 220 V ±10%, 50 Hz |
| Dimensions (L×W×H) | 470 × 325 × 700 mm |
| Weight | ~32 kg (dry) |
| 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) |