Environmental Monitoring Instruments
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Showing 5101–5130 of 9112 results
| 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) |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | DWG-8003 |
| Type | Online Ion Analyzer |
| Measurement Range | (0.05–1900) mg/L F⁻ |
| Resolution | 0.01 mg/L |
| Accuracy | ±10% of reading |
| Repeatability | ≤3% |
| Stability | ±10% over 4 h |
| 90% Response Time | ≤5 min |
| Output | Isolated 4–20 mA DC (configurable span) |
| Communication | RS-232 or RS-485 (user-selectable) |
| Power Supply | AC 220 V ±10%, 50 Hz |
| Dimensions | 600 × 450 × 160 mm |
| Weight | 50 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Regional Classification | Domestic (China) |
| Model | DWG-8003 |
| Price Range | USD 7,000–14,000 |
| Instrument Category | Fluoride Ion Analyzer |
| Instrument Type | Online Continuous Monitoring System |
| Measurement Range | 0.05–1900 mg/L |
| Response Time (90%) | ≤5 min |
| Resolution | 0.01 mg/L |
| Accuracy | ±10% of reading |
| Repeatability | ≤3% RSD |
| Stability | ±10% over 4 h |
| Power Supply | AC 220 V ±10%, 50 Hz ±1% |
| Dimensions (W×D×H) | 600 × 450 × 160 mm |
| Weight | 50 kg |
| Output | Isolated 4–20 mA DC (configurable span) |
| Temperature Control | Integrated Peltier-based thermostatic module |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Origin | Domestic (China) |
| Model | DWG-8004 |
| Price Range | USD 7,000–14,000 (FOB Shanghai) |
| Instrument Category | Chloride Ion Analyzer |
| Instrument Type | Online Continuous Monitoring System |
| Measurement Range | 2.00–1900 mg/L Cl⁻ |
| Resolution | 0.01 mg/L |
| Accuracy | ±10% of reading |
| Repeatability | ≤3% RSD |
| Drift | ±10% over 4 h |
| 90% Response Time | ≤5 min |
| Operating Power | 220 ± 22 V AC, 50 ± 1 Hz |
| Dimensions (W×H×D) | 600 × 450 × 160 mm |
| Weight | 50 kg |
| Temperature Control | Integrated Peltier-based thermostatic module (±0.5 °C stability) |
| Output Signals | Isolated 4–20 mA DC (user-configurable span) |
| Display | 7-inch color TFT-LCD touchscreen with Chinese GUI |
| Data Storage | Internal non-volatile memory supporting ≥100,000 timestamped measurement and calibration records |
| Auto-calibration | Programmable interval (1 h to 7 days) |
| Cleaning | Motor-driven wiper + optional air-pulse or water-jet cleaning cycle |
| Alarm Outputs | Dual relay outputs (NO/NC), configurable high/low concentration thresholds |
| Power Failure Recovery | Automatic resume with data integrity preservation |
| Compliance | Designed per GB/T 32205–2015 (Chinese Standard for Online Water Quality Analyzers), compatible with ISO 7027 (turbidity interference mitigation), and supports audit-ready logging for GLP/GMP-aligned operations |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | DWG-8004 |
| Instrument Category | Chloride Ion Analyzer |
| Instrument Type | Online Continuous Monitor |
| Measurement Range | (2.00–1900) mg/L |
| Resolution | 0.01 mg/L |
| Accuracy | ±10% of reading |
| Repeatability | ≤3% |
| Stability | ±10% over 4 h |
| 90% Response Time | ≤5 min |
| Power Supply | (220 ± 22) V AC, (50 ± 1) Hz |
| Dimensions (W×H×D) | 600 × 450 × 160 mm |
| Weight | 50 kg |
| Output | Isolated 4–20 mA DC (configurable span) |
| Temperature Control | Integrated Peltier-based thermostatic module |
| Display | 7-inch color TFT LCD with capacitive touch interface |
| Data Storage | Internal non-volatile memory supporting ≥100,000 timestamped records |
| Alarm Outputs | Dual programmable high/low concentration thresholds with relay dry-contact output |
| Auto-functions | Scheduled auto-calibration, auto-cleaning, auto-zeroing, and power-fail recovery |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Origin | Domestic (China) |
| Model | DWS-295F |
| Price Range | USD 700–1,400 |
| Instrument Category | Sodium Ion Analyzer |
| Form Factor | Benchtop |
| Measurement Accuracy | ±0.01 pNa |
| Temperature Range | −5.0 to 110.0 °C |
| pNa Range | 0.00–9.00 pNa |
| mV Range | −1999 to +1999 mV |
| [Na⁺] Concentration Range | 2.3×10⁻² to 2.3×10⁷ µg/L |
| Temperature Accuracy | ±0.2 °C |
| Data Storage Capacity | 50 datasets (pNa/mV/[Na⁺]/temperature) |
| Interface | USB |
| Power Supply | DC 9 V, 800 mA (center-positive) |
| Dimensions | 280 × 215 × 92 mm |
| Weight | 1.0 kg |
| Brand | Leici |
|---|---|
| Model | DWS-295F |
| Type | Benchtop Sodium Ion Analyzer |
| Measurement Accuracy | ±0.01 pNa |
| Temperature Range | −5.0 to 110.0 °C |
| pNa Range | 0.00–9.00 pNa |
| mV Range | −1999 to +1999 mV |
| [Na⁺] Concentration Range | 2.3×10⁻² to 2.3×10⁷ µg/L |
| Temperature Accuracy | ±0.2 °C |
| Data Storage Capacity | 50 sets (pNa, mV, or [Na⁺] with temperature) |
| Interface | USB |
| Power Supply | DC 9 V, 800 mA (center-positive) |
| Dimensions | 280 × 215 × 92 mm |
| Weight | 1 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Region of Manufacture | Domestic (China) |
| Model | DWS-296 |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Gas-Sensing Ion-Selective Electrode (ISE) Method |
| Measurement Range | 0.05–1000 mg/L NH₃–N |
| Accuracy | ±1% of reading |
| Detection Limit | 0.05 mg/L |
| Analysis Time | 5–10 minutes per sample |
| Throughput | 1 sample per run |
| Display | LCD with Chinese GUI |
| Data Storage | 200 measurement records |
| Calibration | 2-point calibration supported |
| Connectivity | USB interface for PC communication via proprietary software |
| Temperature Control | Integrated thermostatic system (0.0–40.0 °C) |
| Measured Parameters | pN (–log[NH₃]), mV, NH₃–N concentration (mg/L), temperature (°C) |
| Electronic Unit Error | pN ±0.01 pN ±1 digit |
| Stability | ≤±0.01 pN / 3 h |
| Power Supply | Control unit: 9 V DC, 500 mA (center-positive) |
| Measurement unit | AC 220 V ±10%, 50 Hz ±1 Hz |
| Dimensions & Weight | Control unit: 300 × 220 × 80 mm, 1 kg |
| Measurement unit | 370 × 380 × 510 mm, 13 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Region of Manufacture | Domestic (China) |
| Model | DWS-296 |
| Price | USD 1,530 (approx.) |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Gas-Sensing Ion-Selective Electrode (ISE) Method |
| Measurement Range | 0.05–1000 mg/L NH₃–N |
| Accuracy | ±1% of reading |
| Detection Limit | 0.05 mg/L |
| Measurement Time | 5–10 minutes per sample |
| Sample Throughput | 1 sample per assay |
| Display | LCD with Chinese GUI |
| Readout Modes | Smart-Read (adaptive equilibrium), Timed-Read (fixed-interval or endpoint), Cont-Read (continuous kinetic monitoring) |
| Data Storage | Up to 200 measurement sets with timestamp, pN, mV, temperature, and NH₃–N concentration |
| Power Supply | Control Unit: 9 VDC, 500 mA (center-positive) |
| Measurement Unit | AC 220 V ±10%, 50 Hz |
| Dimensions & Weight | Control Unit: 300 × 220 × 80 mm, 1 kg |
| Measurement Unit | 370 × 380 × 510 mm, 13 kg |
| Interface | RS-232 serial port compliant with EIA/TIA-232 standard |
| Software Compatibility | REX Data Acquisition Software (Windows-based) |
| Printer Support | TP-16 thermal printer (optional) |
| Electrode Type | Integrated composite ammonia gas-sensing ISE with hydrophobic membrane and internal buffer |
| Temperature Compensation | Automatic (0.0–40.0 °C), NTC thermistor-based |
| Environmental Rating | Indoor laboratory use only, IP20 |
| Compliance | Designed in accordance with GB/T 27025–2019 (equivalent to ISO/IEC 17025), JJG 822–2019 (Chinese metrological verification regulation for ammonia analyzers) |