Leici
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| 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 | 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 |
| 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 |
| 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 |
| 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 | Original Equipment Manufacturer (OEM) |
| Country of Origin | China |
| Model | DDB-301 |
| Measurement Parameter | Electrical Conductivity Only |
| Portability | Handheld |
| Intended Use Environment | Laboratory & Field Deployment |
| Minimum Resolution | 1 pS/m |
| Display | LCD with High-Contrast Backlight |
| Power Supply | Two 476A 6 V Alkaline Batteries |
| Operating Temperature | 0–40 °C |
| Relative Humidity | ≤85% RH |
| Dimensions | 85 × 220 × 50 mm |
| Weight | ~350 g |
| Explosion Protection | Ex ia IIA T5 Ga (Certified per GB 3836.1–2021 / IEC 60079-0:2017 and GB 3836.4–2021 / IEC 60079-11:2011) |
| Certified Explosion-Proof Certificate No. | GYB23.2384X |
| Included Accessories | DJSY-0.01 Fuel-Specific Conductivity Sensor, Silicone Protective Sleeve, Metallic Calibration Beaker |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Manufacturer |
| Product Origin | Domestic (China) |
| Model | DDB-303A |
| Price Range | USD 140–280 |
| Measured Parameter | Conductivity Only |
| Portability | Portable |
| Intended Use | Laboratory & Field |
| Conductivity Range | 0.00 μS/cm to 100 mS/cm |
| Accuracy | ±1.0% of Full Scale (FS) |
| Minimum Resolution | 0.01 μS/cm (auto-ranging) |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Origin | Domestic (China) |
| Model | DDB-305A |
| Price Range | USD 280–420 |
| Measured Parameters | Conductivity, TDS, Temperature |
| Portability | Handheld |
| Intended Use | Laboratory & Field |
| Conductivity Range | 0.00 µS/cm to 200 mS/cm |
| TDS Range | 0.00 mg/L to 100 g/L |
| Temperature Range | −5.0 to 110.0 °C (23.0 to 230.0 °F) |
| Accuracy | ±1.0% of Full Scale (FS) |
| Minimum Resolution | 0.01 µS/cm (auto-ranging), 0.01 mg/L (TDS), 0.1 °C/°F (temperature) |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Manufacturer |
| Origin Category | Domestic (China) |
| Model | DDBJ-350 |
| Price Range | USD 280–420 |
| Measured Parameters | Conductivity (single-parameter) |
| Portability | Portable |
| Intended Use | Laboratory & Field |
| Conductivity Range | 0.000 µS/cm to 500 mS/cm |
| TDS Range | 0.00 mg/L to 300 g/L |
| Resistivity Range | 5.00 Ω·cm to 20.00 MΩ·cm |
| Salinity Range | 0.00–8.00 % |
| Temperature Range | −5.0 to 110.0 °C (23.0–230.0 °F) |
| Accuracy | ±1.0 % FS (conductivity, TDS, resistivity), ±0.2 % FS (salinity), ±0.2 °C (temperature) |
| Minimum Resolution | 0.001 µS/cm (conductivity, auto-ranging) |
| Key | Brand: Leici |
|---|---|
| Model | DDBJ-350F |
| Type | Portable Conductivity Meter |
| Measurement Parameters | Conductivity, Resistivity, TDS, Salinity, Temperature |
| Conductivity Range | 0.000 µS/cm to 1000 mS/cm |
| TDS Range | 0.000 mg/L to 300 g/L |
| Resistivity Range | 5.00 Ω·cm to 20.00 MΩ·cm |
| Salinity Range | 0.00–8.00 % |
| Temperature Range | −5.0–110.0 °C (23.0–230.0 °F) |
| Accuracy | ±1.0 % FS (Conductivity/Resistivity/TDS), ±0.2 % FS (Salinity), ±0.2 °C (Temperature) |
| Resolution | 0.001 µS/cm (Conductivity), 0.01 Ω·cm (Resistivity), 0.001 mg/L (TDS), 0.01 % (Salinity), 0.1 °C/°F (Temperature) |
| Auto-Ranging Resolution Switching | Yes |
| Temperature Compensation | Automatic/manual, linear/pure-water/non-compensated modes |
| Calibration | 1–3 point, auto-recognition of 4 GB standard solutions |
| IP Rating | IP65 |
| Data Storage | 1000 datasets per parameter |
| Interface | USB, RS-232 |
| Power | Rechargeable Li-ion battery, AC adapter (100–240 V AC input / 5 V DC output) |
| Dimensions | 90 × 258 × 42 mm |
| Weight | 0.5 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Origin | Domestic (China) |
| Model | DDBJ-350F |
| Price Range | USD 420–690 |
| Measured Parameters | Conductivity, Resistivity, TDS, Salinity, Temperature |
| Portability | Handheld & Field-Deployable |
| Intended Use | Laboratory, Field Sampling, Quality Control |
| Conductivity Range | 0.000 µS/cm to 1000 mS/cm |
| TDS Range | 0.000 mg/L to 300 g/L |
| Resistivity Range | 5.00 Ω·cm to 20.00 MΩ·cm |
| Salinity Range | 0.00–8.00% |
| Temperature Range | −5.0 to 110.0 °C (23.0–230.0 °F) |
| Accuracy | ±1.0% FS (Conductivity/Resistivity/TDS), ±0.2% FS (Salinity), ±0.2 °C (Temperature) |
| Minimum Resolution | 0.001 µS/cm (Conductivity), 0.01 Ω·cm (Resistivity), 0.001 mg/L (TDS), 0.01% (Salinity), 0.1 °C/°F (Temperature) |
| IP Rating | IP65 |
| Electrode Compatibility | Auto-recognizing K=0.1, K=1.0, and K=0.01 conductivity cells |
| Calibration | 1–3 point, auto-identification of GB standard solutions (1413 µS/cm, 12.88 mS/cm, etc.) |
| Compensation Modes | Non-compensated, Linear (α=2.0%/°C), Pure Water (non-linear), Manual/ATC |
| Data Storage | 1000 datasets with timestamp, temperature, and electrode ID |
| Connectivity | USB-B port (PC/LIMS), RS-232 (printer), GLP-compliant audit trail |
| Power | Rechargeable Li-ion battery (≥100 h typical operation), USB-C charging support |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Domestic (China) |
| Model | DDBJ-351L |
| Detection Parameters | Multi-parameter (Conductivity, TDS, Resistivity, Salinity, Temperature) |
| Portability | Handheld / Field-Deployable |
| Intended Use | Laboratory, Field Sampling, and Quality Control Environments |
| Conductivity Range | 0.000 μS/cm to 3000 mS/cm |
| TDS Range | 0.000 mg/L to 1000 g/L |
| Resistivity Range | 5.00 Ω·cm to 100.0 MΩ·cm |
| Salinity Range | 0.00–8.00% (w/w) |
| Temperature Range | −10.0 to 135.0 °C / 14.0 to 275.0 °F |
| Accuracy | ±0.5% of Full Scale |
| Minimum Resolution | 0.001 μS/cm (auto-ranging) |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | DDBJ-351L |
| Detection Parameters | Conductivity, Resistivity, TDS, Salinity, Ash Content, Temperature |
| Portability | Portable |
| Intended Use | Laboratory & Field |
| Conductivity Range | 0.000 μS/cm to 3000 mS/cm |
| TDS Range | 0.000 mg/L to 1000 g/L |
| Resistivity Range | 5.00 Ω·cm to 100.0 MΩ·cm |
| Salinity Range | 0.00–8.00% |
| Temperature Range | −10.0–135.0 °C / 14.0–275.0 °F |
| Accuracy | ±0.5% FS (Conductivity/Resistivity/TDS), ±0.1% FS (Salinity), ±0.1 °C (Temperature) |
| Minimum Resolution | 0.001 μS/cm (Conductivity), 0.01 Ω·cm (Resistivity), 0.001 mg/L (TDS), 0.01% (Salinity), 0.1 °C/°F (Temperature) |
| IP Rating | IP65 |
| Electrode Compensation | Automatic temperature compensation (ATC) with selectable reference temperatures (5.0, 10.0, 15.0, 18.0, 20.0, 25.0 °C) |
| Calibration | 1–5-point conductivity calibration |
| Data Storage | 1000 datasets per parameter group |
| Connectivity | USB, Bluetooth 5.0, U-disk support, barcode scanner interface |
| Power | Rechargeable Li-ion battery (DC5V input compatible with universal AC adapters) |
| Dimensions & Weight | 90 × 255 × 40 mm, 0.5 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer | Leici (Shanghai Inesa Scientific Instrument Co., Ltd.) |
| Type | DDG-35 |
| Conductivity Range | 0.0 µS/cm to 200 mS/cm |
| Resistivity Range | 5.00 Ω·cm to 20 MΩ·cm |
| TDS Range | 0.0 mg/L to 100 g/L |
| Salinity Range | 0.00–8.00 % |
| Temperature Range | −10.0 to 120.0 °C |
| Basic Instrument Error | ±2.0 % FS (Conductivity) |
| Temperature Error | ±0.5 °C (0.0–60.0 °C), ±1.0 °C (other ranges) |
| Conductivity Resolution | 0.001 µS/cm (selectable: 0.001 / 0.01 / 0.1 / 1 µS/cm) |
| Temperature Resolution | 0.1 °C |
| Repeatability | 1.0 % FS (instrument), 0.3 % FS (electronic unit) |
| Auto-Temperature Compensation Range | −10 to 120 °C |
| Temp. Coefficient Adjustment | 0.0–10.0 %/°C |
| Output Signals | Isolated 4–20 mA DC (configurable span), Isolated RS-485 (Modbus RTU) |
| Enclosure Rating | IP65 |
| Dimensions | 166 × 166 × 110 mm |
| Weight | 2 kg |
| Standard Sensor Cable Length | 10 m |
| Mounting Cutout | 140 × 140 mm |
| Power Supply | AC 220 V ±10 %, 50 Hz ±1 % |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Product Category | Domestic Industrial Instrument |
| Model | DDG-5205A |
| Price Range | USD 850–1,420 (FOB Shanghai) |
| Conductivity Range | 0.000 µS/cm to 10.0 mS/cm (dependent on cell constant: K=0.01 cm⁻¹: 0–20 µS/cm |
| K=0.1 cm⁻¹ | 1–200 µS/cm |
| K=1.0 cm⁻¹ | 10–10,000 µS/cm) |
| Temperature Range | −10.0 to 120.0 °C |
| Temperature Compensation Range | 5.0 to 60.0 °C (reference temp: 25.0 °C) |
| Conductivity Resolution | 0.001 / 0.01 / 0.1 / 1 µS/cm (auto-ranging) |
| Temperature Resolution | 0.1 °C |
| Basic Error | ±2.0% FS (conductivity), ±0.5 °C (0.0–60.0 °C), ±1.0 °C (outside range) |
| Repeatability | 1.0% FS |
| Electronic Unit Accuracy | ±1.0% FS (conductivity), ±0.3 °C (temperature) |
| Drift Stability | ±0.5% FS/24 h |
| Enclosure Rating | IP65 |
| Power Supply | AC 220 V ±10%, 50 Hz ±1% or DC 24 V ±15% |
| Dimensions | 166 × 166 × 110 mm |
| Weight | ~2.0 kg |
| Data Storage | 400 records with configurable logging interval |
| Output | Isolated 4–20 mA DC (user-defined upper/lower limits) |
| Digital Interface | RS-232 or RS-485 (selectable) |
| Auto-Cleaning Support | Yes |
| Alarm Functions | Programmable high/low limit alerts with relay output |
| Power Failure Protection | Non-volatile memory retention |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Product Origin | Domestic (China) |
| Model | DDS-11A |
| Detection Parameter | Single-parameter (Conductivity) |
| Form Factor | Benchtop |
| Intended Use | Laboratory |
| Conductivity Measurement Range | 0.00 μS/cm to 100.0 mS/cm |
| Accuracy | ±1.5% of Full Scale (F.S.) |
| Minimum Resolution | 0.01 μS/cm (auto-ranging with scale-dependent resolution switching) |
| Temperature Compensation | Manual |
| Electrode Constant Input | Direct entry supported |
| Frequency Auto-switching | Yes (enables full-range coverage with K = 1.0 cell) |
| Display | High-contrast LCD with stability indicator |
| Protection Rating | IP54 |
| Power Supply | AC/DC adapter (Input: 100–240 VAC, Output: 20 VDC / 1500 mA) |
| Dimensions (L×W×H) | 200 × 160 × 63 mm |
| Weight | 0.6 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Origin | Domestic (China) |
| Model | DDS-307 |
| Price Range | USD 140–280 (FOB) |
| Measured Parameter | Conductivity Only |
| Form Factor | Benchtop |
| Intended Use | Laboratory |
| Conductivity Range | 0.00 µS/cm to 200 mS/cm |
| Accuracy | ±1.0% of Full Scale (FS) |
| Minimum Resolution | 0.01 µS/cm (auto-ranging) |
| Conductivity Class | Class 1.0 per GB/T 11018–2022 |
| Temperature Compensation | Manual |
| Calibration | Single-point with auto-recognition of 4 standard GB solutions (e.g., KCl 0.01 mol/L, 0.1 mol/L, 1.0 mol/L, and 0.001 mol/L) |
| Electrode Constant Support | Auto-frequency switching optimized for 1.0 cm⁻¹ cell |
| IP Rating | IP54 |
| Data Storage | 50 measurement records with timestamp, recall, and deletion |
| Display | High-contrast LCD with backlight |
| Power Supply | AC/DC adapter (Input: 100–240 VAC, Output: 20 VDC / 1500 mA) |
| Dimensions (W×D×H) | 242 × 195 × 68 mm |
| Weight | 0.9 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Product Category | Domestic |
| Model | DDS-307A |
| Price Range | USD 280–420 (FOB) |
| Measurement Parameters | Conductivity, TDS, Temperature |
| Form Factor | Benchtop |
| Intended Use | Laboratory |
| Conductivity Range | 0.00 µS/cm to 200.0 mS/cm |
| TDS Range | 0.00 mg/L to 100.0 g/L |
| Temperature Range | −5.0 °C to 110.0 °C |
| Accuracy | ±1.0% FS |
| Minimum Conductivity Resolution | 0.01 µS/cm (auto-ranging) |
| TDS Resolution | 0.01 mg/L (auto-ranging) |
| Temperature Resolution | 0.1 °C |
| Temperature Accuracy | ±0.2 °C |
| Power Supply | AC 100–240 V input / DC 20 V, 1.5 A output |
| Dimensions | 242 × 195 × 68 mm |
| Weight | 0.9 kg |
| IP Rating | IP54 |
| Conductivity Class | Class 1.0 per GB/T 11018–2021 |
| Calibration | Single-point conductivity calibration with auto-recognition of four standard GB solutions (e.g., 1413 µS/cm, 12.88 mS/cm, etc.) |
| Measurement Modes | Auto-endpoint detection, continuous mode, equilibrium mode |
| Compensation | Automatic and manual temperature compensation (ATC/MTT) |
| Frequency Switching | Auto-frequency selection for optimal cell constant matching (1.0 cm⁻¹ electrode supported) |
| Data Storage | 50 measurement records with timestamp, parameter set, and temperature stamp |
| Compliance | Meets GB/T 11018–2021, JJG 376–2007, and general laboratory instrument requirements for GLP environments |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Product Category | Domestic |
| Model | DDSJ-307F |
| Price Range | USD 420–690 |
| Measured Parameters | Conductivity, Resistivity, TDS, Salinity, Temperature |
| Form Factor | Benchtop |
| Intended Use | Laboratory |
| Conductivity Range | 0.000 µS/cm to 1000 mS/cm |
| TDS Range | 0.00 mg/L to 300 g/L |
| Resistivity Range | 5.00 Ω·cm to 20.00 MΩ·cm |
| Salinity Range | 0.00–8.00 % |
| Temperature Range | −5.0 to 110.0 °C (23.0–230.0 °F) |
| Minimum Conductivity Resolution | 0.001 µS/cm (auto-ranging) |
| Key | Brand: Leici |
|---|---|
| Origin | Shanghai, China |
| Model | DDSJ-308F |
| Form Factor | Benchtop |
| Application Environment | Laboratory |
| Conductivity Range | 0.000 μS/cm to 1000 mS/cm |
| TDS Range | 0.000 mg/L to 1000 g/L |
| Resistivity Range | 5.00 Ω·cm to 100.0 MΩ·cm |
| Salinity Range | 0.00–8.00 % |
| Temperature Range | −10.0–135.0 °C (14.0–275.0 °F) |
| Accuracy | ±0.80 % of Full Scale |
| Minimum Resolution | 0.001 μS/cm (auto-ranging) |
| IP Rating | IP54 |
| Calibration | 1–3 point with auto-recognition of GB-standard KCl solutions |
| Compensation Modes | Non-compensated, Linear (α), Pure Water |
| Auto-Frequency Switching | Yes |
| Interfaces | RS-232, USB |
| Data Storage | 500 datasets per parameter type |
| GLP Compliance | Yes (audit trail, timestamp, operator ID support via software) |
| Key | Brand: Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | OEM Manufacturer |
| Instrument Type | Benchtop Laboratory Conductivity Meter |
| Model | DDSJ-308F |
| Conductivity Range | 0.000 μS/cm to 1000 mS/cm |
| TDS Range | 0.000 mg/L to 1000 g/L |
| Resistivity Range | 5.00 Ω·cm to 100.0 MΩ·cm |
| Salinity Range | 0.00–8.00% |
| Temperature Range | −10.0–135.0 °C |
| Accuracy | ±0.5% FS (Conductivity, Resistivity, TDS), ±0.1% FS (Salinity), ±0.1 °C (Temperature) |
| Resolution | 0.001 μS/cm (auto-ranging), 0.01 Ω·cm, 0.001 mg/L, 0.01%, 0.1 °C |
| Temperature Compensation | Automatic/manual, with selectable reference temperatures (20 °C or 25 °C) |
| Calibration | 1–3 point, auto-recognition of 4 GB-standard conductivity solutions |
| Data Storage | 500 datasets per parameter |
| Interface | RS-232 (for printer), USB (for PC connectivity) |
| Protection Rating | IP54 |
| Power Supply | AC 100–240 V input, DC 9 V output |
| Dimensions | 242 × 195 × 68 mm |
| Weight | 0.9 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | DDSJ-318T |
| Measurement Parameters | Conductivity, TDS, Resistivity, Salinity, Temperature |
| Form Factor | Benchtop |
| Application Environment | Laboratory |
| Conductivity Range | 0.000 μS/cm to 2000 mS/cm |
| TDS Range | 0.000 mg/L to 1000 g/L |
| Resistivity Range | 5.00 Ω·cm to 100.0 MΩ·cm |
| Salinity Range | (0.00–8.00)% |
| Temperature Range | 0.00–100.00 °C |
| Accuracy | ±0.5% FS |
| Minimum Resolution | 0.001 μS/cm |
| Temperature Compensation Modes | None, Linear, Non-linear, Pure Water |
| Reference Temperatures | 5.0, 10.0, 15.0, 18.0, 20.0, 25.0 °C (default) |
| Electrode Constant Auto-Detection | Yes |
| Calibration Points | 1–5 points |
| IP Rating | IP54 |
| Data Storage Capacity | 1000 datasets |
| Compliance | GLP, GMP-supportive audit trail, FDA 21 CFR Part 11-ready data handling via optional software |
| Interfaces | RS-232, USB, U-disk support, barcode scanner compatibility, optional autosampler integration |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | OEM Manufacturer |
| Origin Category | Domestic (China) |
| Model | DDSJ-318T |
| Detection Parameters | Single-Parameter (Conductivity, Resistivity, TDS, Salinity, Ash, Temperature) |
| Portability | Benchtop |
| Application Environment | Laboratory |
| Conductivity Range | 0.000 µS/cm to 2000 mS/cm |
| TDS Range | 0.000 mg/L to 1000 g/L |
| Resistivity Range | 5.00 Ω·cm to 100.0 MΩ·cm |
| Salinity Range | 0.00–8.00 % |
| Temperature Range | −10.0 to 135.0 °C |
| Accuracy | ±0.5 % FS (Conductivity/Resistivity/TDS), ±0.1 % FS (Salinity), ±0.1 °C (Temperature) |
| Minimum Resolution | 0.001 µS/cm (Conductivity), 0.01 Ω·cm (Resistivity), 0.001 mg/L (TDS), 0.01 % (Salinity), 0.1 °C (Temperature) |
| IP Rating | IP54 |
| Compliance | GLP, GMP (21 CFR Part 11-ready audit trail via software), ASTM D1125, ISO 7888, USP <645> |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Product Category | Domestic |
| Model | DDSJ-319L |
| Price Range | USD 700–1,400 |
| Measured Parameters | Conductivity, Resistivity, TDS, Salinity, Temperature |
| Form Factor | Benchtop |
| Intended Use | Laboratory |
| Conductivity Range | 0.000 µS/cm to 3000 mS/cm |
| TDS Range | 0.000 mg/L to 1000 g/L |
| Resistivity Range | 5.00 Ω·cm to 100.0 MΩ·cm |
| Salinity Range | 0.00–8.00 % |
| Temperature Range | −5.0 to 130.0 °C |
| Accuracy | ±0.5 % of Full Scale (FS) for conductivity/resistivity/TDS |
| Minimum Resolution | 0.001 µS/cm (conductivity), 0.01 Ω·cm (resistivity), 0.001 mg/L (TDS), 0.01 % (salinity), 0.1 °C (temperature) |
| Compliance | GLP-compliant data management, supports ASTM D1125, ISO 7888, USP <645>, and China GB/T 6682 & GB/T 11025 standards |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Instrument Type | Benchtop Laboratory Conductivity Meter |
| Measurement Parameters | Conductivity, TDS, Resistivity, Salinity, Temperature |
| Conductivity Range | 0.000 µS/cm to 3000 mS/cm |
| TDS Range | 0.000 mg/L to 1000 g/L |
| Resistivity Range | 5.00 Ω·cm to 100.0 MΩ·cm |
| Salinity Range | 0.00–8.00% (w/w) |
| Temperature Range | −5.0 to 130.0 °C |
| Accuracy | ±0.5% of full scale (FS) |
| Minimum Resolution | 0.001 µS/cm |
| Calibration | Up to 5-point conductivity calibration with auto-recognition of GB-standard reference solutions (4 preloaded) |
| Compensation Modes | Automatic temperature compensation (ATC), pure water conductivity correction, seawater salinity compensation |
| Connectivity | RS232/USB interface for PC and USB flash drive |
| Data Management | 1000 stored measurement records per parameter type |
| Software Compatibility | Leici LabSuite™ PC software (optional) for data export, statistical analysis, report generation, and 21 CFR Part 11–compliant electronic signatures |
| 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 |
| 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 |
| 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 |
| 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 |