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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 | 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 |
| 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 | 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 | DZS-708L |
| Instrument Type | Laboratory Water Quality Analyzer |
| Measurable Parameters | pH, ORP, mV, pX, Ion Concentration (Ag⁺, Na⁺, K⁺, NH₄⁺, Cl⁻, F⁻, NO₃⁻, etc.), Conductivity (EC), Resistivity, TDS, Salinity, Ash Content, Dissolved Oxygen (DO) Concentration & Saturation, Temperature |
| Display | 7-inch HD color TFT touchscreen with bilingual (English/Chinese) UI |
| Environmental Rating | IP54 |
| Channels | 4 independent measurement channels |
| Modular Architecture | Supports 6 interchangeable modules — pH, pX, EC-T (2-electrode conductivity), EC-F (4-electrode conductivity), DO-F (fluorescence-based DO), DO-P (polarographic DO) |
| Calibration | Multi-point auto-recognized calibration per module |
| Data Management | GLP-compliant storage for ≥1000 sample sets per parameter type |
| Connectivity | RS-232 (printer), USB (PC software & U-disk export/import), barcode scanner support |
| Compliance | Designed to support ISO/IEC 17025, USP <645>, ASTM D1125, ASTM D512, EPA 150.1/150.2, and FDA 21 CFR Part 11 requirements for data integrity |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | DZB-712 |
| Instrument Type | Portable / Handheld Water Quality Analyzer |
| Measurement Parameters | pH/pX, Conductivity, Dissolved Oxygen (DO), Temperature, TDS, Salinity, Resistivity, ORP (mV) |
| IP Rating | IP65 |
| Display | High-Resolution LCD |
| Data Storage | 500 sets per parameter |
| Compliance | GLP-compliant data traceability |
| Connectivity | USB, RS-232 |
| Power | Rechargeable Li-ion battery (DC5V input support) |
| Dimensions | 80 × 225 × 35 mm |
| Weight | 0.4 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 |
| 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 |
| 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 |
| Model | DZS-706F |
| Instrument Type | Benchtop Laboratory Water Quality Analyzer |
| Measured Parameters | pH/pX, ORP (mV), Conductivity, Resistivity, TDS, Salinity, Dissolved Oxygen (DO), DO Saturation, Temperature |
| Measurement Principle | Potentiometric (pH/ion), Inductive/Two-Electrode Conductometry, Polarographic (Clark-type) Dissolved Oxygen |
| Accuracy | pH ±0.01, Conductivity ±1.0% FS, DO ±0.30 mg/L, Temperature ±0.3 °C (0–60 °C) |
| Resolution | pH 0.01, Conductivity 0.001 µS/cm, DO 0.01 mg/L, Temp 0.1 °C |
| Calibration | Up to 5-point pH/pX, 3-point conductivity, zero/full-scale DO |
| Compensation | Automatic temperature (−5 to 110 °C), atmospheric pressure (kPa/mbar/Torr/atm), salinity |
| Data Management | 500 datasets per parameter group, GLP-compliant audit trail, RS-232 & USB interfaces |
| Enclosure Rating | IP54 |
| Power | DC 9 V (AC 100–240 V adapter) |
| Dimensions | 242 × 195 × 68 mm |
| Weight | 0.9 kg] |
| [Brand | LeiCi |
|---|---|
| Origin | Shanghai, China |
| Model | DZB-718L |
| Instrument Type | Portable/HANDHELD Water Quality Analyzer |
| Measured Parameters | pH, Conductivity, Resistivity, TDS, Salinity, Dissolved Oxygen (DO), Temperature |
| IP Rating | IP65 |
| Display | Color TFT Touchscreen |
| Power | Rechargeable Li-ion Battery |
| Compliance | GLP-compliant Data Management |
| Calibration | Auto-buffer recognition (NIST, GB, DIN, JIS, etc.), 1–8-point pH/pX, 1–5-point conductivity, zero/full-scale DO calibration |
| Connectivity | USB, Bluetooth, USB Flash Drive Support, Barcode Scanner Compatible |
| Storage Capacity | 1000 datasets per parameter group |
| Measurement Accuracy | pH ±0.002, Conductivity ±0.5% FS, DO ±0.10 mg/L (0–50 mg/L), Temp ±0.3 °C (0–60 °C)] |
| [Brand | LeiCi |
|---|---|
| Origin | Shanghai, China |
| Model | DZS-708T |
| Instrument Type | Laboratory Water Quality Analyzer |
| Measured Parameters | pH, Conductivity, Dissolved Oxygen (DO), Ion Concentration (e.g., Na⁺, K⁺, NH₄⁺, Cl⁻, F⁻), ORP, TDS, Salinity, Resistivity, Ash Content (White Sugar & HFCS), Temperature |
| Accuracy Class | pH/pX: 0.001-grade |
| Conductivity/Resistivity/TDS/Salinity | 0.5-grade |
| DO | ±0.30 mg/L (≤20.00 mg/L) |
| Display | Color TFT Touchscreen |
| Protection Rating | IP54 |
| Data Storage | 1000 datasets with GLP/GMP-compliant audit trail |
| Interfaces | RS-232, USB, U-disk support, Scanner-compatible] |
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