Chemical Analysis Instruments
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| Brand | Leichi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | ZDCL-1 |
| Instrument Category | General-Purpose Potentiometric Titrator |
| Application Scope | Dedicated for Chloride Ion Analysis |
| Measurement Range | (−1800.0 to +1800.0) mV |
| Meter Accuracy | ±0.20% of full scale |
| Meter Resolution | 0.1 mV |
| Titration Accuracy | (±0.3 mV ±1 digit) over 3 h |
| Titration Resolution | 1/10000 |
| Titration Repeatability | 0.20% |
| Burette Error | ±0.025 mL (10 mL burette), ±0.035 mL (20 mL burette) |
| Electronic Unit Basic Error | ±0.05% FS |
| Stability | ±0.3 mV / 3 h |
| Operating Environment | 0–40 °C, ≤85% RH |
| Dimensions & Weight | 340 × 400 × 400 mm, ~10 kg |
| Power Supply | AC (220 ± 22) V, (50 ± 1) Hz |
| Brand | Leichi |
|---|---|
| Origin | Shanghai, China |
| Model | ZDCL-2 |
| Measurement Range | (−1800.0 to +1800.0) mV |
| Potential Resolution | 0.1 mV |
| Potential Accuracy | ±0.2 mV |
| Stability | (±0.3 mV ±1 digit)/3 h |
| Titration Resolution | 1/10000 (for 10 mL burette) |
| Titration Precision | ≤0.20% RSD |
| Burette Error | ±0.025 mL (10 mL), ±0.035 mL (20 mL) |
| Temperature Compensation Range | (−5.0 to 105.0) °C, Resolution: 0.1 °C, Accuracy: ±0.3 °C |
| Interface | RS232 |
| Data Storage | 200 titration results + 1 full dataset |
| Compliance | GB/T 176–2017, GB/T 8077–2012, GB 50344–2004, JGJ/T 322–2013 |
| Brand | Leichi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | ZDJ-4D |
| Instrument Category | General-Purpose Potentiometric Titrator |
| Application Scope | Universal |
| Measurement Range | mV: −2000.0 to +2000.0 mV |
| pH | −5.000 to 20.000 |
| Potentiometric Resolution | 0.01 mV |
| Titration Volume Resolution | 1/20000 |
| Brand | Leichi |
|---|---|
| Origin | Shanghai, China |
| Model | ZDJ-5 |
| Instrument Type | General-purpose Potentiometric Titrator |
| Application Scope | Universal |
| pH Range | 0.00–14.00 pH |
| mV Range | 0–±1999.0 mV |
| Temperature Range | −5.0–105.0 °C |
| pH Resolution | 0.01 pH |
| mV Resolution | 0.1 mV |
| Temperature Resolution | 0.1 °C |
| pH Accuracy | ±0.01 pH ± 1 digit |
| mV Accuracy | ±0.03% FS |
| Temperature Accuracy | ±0.3 °C ± 1 digit |
| Conductivity Range | 0.000–199.9 µS/cm |
| Conductivity Resolution | 0.001 µS/cm |
| Conductivity Accuracy | ±0.5% FS |
| Polarographic Current Ranges | 0–199.9 µA, 0–19.99 µA, 0–1.999 µA, 0–0.199 µA |
| Polarization Voltage Options | 3, 50, 100 mV |
| Titration Precision | ±0.03% FS |
| Titration Resolution | 1/1,500,000 |
| Endpoint Detection Sensitivity (Potentiometric) | ±2 mV |
| Endpoint Detection Sensitivity (Amperometric) | ±5% FS |
| Repeatability of Titration Analysis | 0.2% |
| 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 |
| Model | DDB-301 |
| Portability | Portable |
| Application Environment | Laboratory & Field |
| Measurement Parameter | Electrical Conductivity (Single-Parameter) |
| Resolution | 1 pS/m |
| Measurement Range | 0–1999 pS/m |
| Display | LCD |
| Power Supply | Two 476A 6V 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 (Certificate No.: GYB23.2384X) |
| Standard Electrode | DJSY-0.01 Fuel Conductivity Cell |
| Accessories | Silicone Protective Sleeve, Metal Measuring 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 | Authorized Distributor |
| Country of Origin | China |
| Model | DDB-303A |
| Price | USD 205 (FOB Shanghai) |
| Measurement Parameters | Conductivity only |
| Portability | Handheld |
| Intended Use | Field and Lab |
| Conductivity Range | 0.000 µS/cm to 100 mS/cm |
| Accuracy | ±1.0% 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 |
| Model | DDB-305A |
| Portability | Portable |
| Intended Use | Laboratory |
| 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% FS |
| Minimum Resolution | 0.01 μS/cm (auto-ranging) |
| TDS Resolution | 0.01 mg/L (auto-ranging) |
| Temp. Resolution | 0.1 °C / 0.1 °F |
| Temp. Accuracy | ±0.2 °C |
| IP Rating | IP65 |
| Data Storage | 200 sets |
| Power | Rechargeable Li-ion battery, DC5V adapter input (AC100–240V) |
| Dimensions | 80 × 225 × 35 mm |
| Weight | 0.4 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | DDBJ-350, DDBJ-350F |
| Portability | Portable |
| Application Environment | Laboratory & Field |
| Conductivity Range | 0.000 µS/cm to 500 mS/cm (DDBJ-350) / 1000 mS/cm (DDBJ-350F) |
| 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 |
| Accuracy | ±1.0% FS (conductivity, resistivity, TDS), ±0.2% FS (salinity), ±0.2 °C (temperature) |
| Minimum Resolution | 0.001 µS/cm |
| IP Rating | IP65 |
| Compliance | GLP-compliant data management, supports ASTM D1125, ISO 7888, and GB/T 6908 |
| 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) |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | DDBJ-350 |
| Portability | Portable |
| Application | Laboratory Use |
| Conductivity Range | 0.000 µS/cm to 500 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) |
| Minimum Resolution | 0.001 µS/cm (conductivity), 0.01 Ω·cm (resistivity), 0.01 mg/L (TDS), 0.01% (salinity), 0.1 °C/°F (temperature) |
| IP Rating | IP65 |
| Electrode Compatibility | Auto-recognized 4 GB standard solutions |
| Compensation Modes | Non-compensated, linear (with reference at 20 °C or 25 °C), and pure-water compensation |
| Data Storage | 500 datasets per parameter |
| Interface | USB, RS-232 |
| Power | Rechargeable Li-ion battery |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | DDBJ-350 |
| Portability | Portable |
| Intended Use | Laboratory & Field |
| Conductivity Range | (0.00–1.999×10⁵) µS/cm (5 auto-ranging spans) |
| TDS Range | (0.00–19,990) mg/L (5 auto-ranging spans) |
| Salinity Range | (0.00–8.00)% |
| Resistivity Range | 0–100 MΩ·cm |
| Temperature Range | (0.0–40.0) °C |
| Conductivity Accuracy | ±1.0% FS ±1 digit |
| Salinity Accuracy | ±0.2% ±1 digit |
| Temperature Accuracy | ±0.3 °C ±1 digit |
| Temperature Compensation | 0.0–40.0 °C (reference 25 °C for conductivity, 18 °C for salinity) |
| Electrode Constants Available | 0.01, 0.1, 1.0, 10.0 cm⁻¹ |
| Data Storage Capacity | 250 sets |
| Interface | RS-232 |
| IP Rating | IP65 |
| Power Management | Low-power design with low-battery indicator and auto-off |
| 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 |
| Model | DDBJ-350F |
| Portability | Portable |
| Application | Laboratory |
| 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) |
| 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-recognized 4 GB standard solutions |
| Compensation Modes | Non-compensated, linear (with selectable reference temp: 20 °C or 25 °C), and pure water compensation |
| Data Storage | 1000 datasets per parameter |
| Interface | USB Type-B, RS-232 |
| Power | Rechargeable Li-ion battery (DC5V input via AC adapter, 100–240 VAC) |
| 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 |
| Model | DDBJ-351L |
| Portability | Portable |
| Application | 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 | (−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 |
| Compliance | GLP-compliant data management, supports ASTM D1125, ISO 7888, USP <645>, and IEC 61000-4 EMC standards |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Instrument Type | Benchtop |
| Measurement Principle | Two-electrode AC conductivity measurement |
| Measurement Range | 0–1×10⁵ µS/cm |
| Accuracy | ±1.5% FS (DDS-11A & DDS-11D), ±1.0% FS (DDS-11C) |
| Resolution | 0.1 µS/cm (analog scale) |
| Calibration Standard | NIST-traceable Chinese national calibration solutions |
| Compliance | GB/T 11018–2021 (Chinese National Standard for Conductivity Meters) |
| Power Supply | AC 220 V ±10%, 50 Hz |
| 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 |
| Instrument Type | Benchtop Laboratory Conductivity Meter |
| Measurement Parameter | Conductivity Only |
| Measurement Range | 0.00 μS/cm to 100.0 mS/cm |
| Accuracy | ±1.5% of Full Scale (FS) |
| Minimum Resolution | 0.01 μS/cm (auto-ranging) |
| Temperature Compensation | Manual |
| Electrode Constant Input | Adjustable (default 1.0 cm⁻¹) |
| Auto Frequency Switching | Yes |
| Display | LCD with Stability Indicator |
| Enclosure Rating | IP54 |
| Power Supply | DC 20 V / 1500 mA (AC 100–240 V input adapter) |
| Dimensions | 200 × 160 × 63 mm |
| Weight | 0.6 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | DDS-11A |
| Form Factor | Benchtop |
| Conductivity Range | 0–1.999 S, 2.0–19.99 S, 20.0–199.9 S, 200–1999 S, 2.0–19.99 mS, 20.0–199.9 mS |
| Temperature Range | −5 to 105 °C |
| Accuracy | ±0.5% FS (conductivity), ±0.5 °C (temperature) |
| Resolution | 0.01 (conductivity units), 0.1 °C (temperature) |
| Temperature Compensation | Automatic, 0–100 °C, 2.0% / °C coefficient |
| Electrode Constant Compatibility | 0.01, 0.1, 1.0, 10.0 cm⁻¹ |
| Measurement Modes | Conductivity, TDS (calculated), Resistivity (calculated), Temperature |
| Calibration | Auto-calibration with standard solutions |
| Display | Large LCD, multi-parameter simultaneous readout |
| Instrument Class | 1.0 grade per GB/T 11018–2021 (equivalent to IEC 60746-3) |
| Brand | LeiCi |
|---|---|
| Origin | Shanghai, China |
| Instrument Type | Benchtop |
| Parameter Types | Multi-parameter (Conductivity, TDS, Temperature) |
| Measurement Range | 0–1.999 × 10⁵ µS/cm |
| Accuracy | ±0.5% FS |
| Resolution | 0.01 µS/cm (DDS-307), 0.01 µS/cm / 0.01 °C (DDS-307A), 0.001 µS/cm (DDS-308) |
| Calibration Standard | NIST-traceable conductivity standards (China-specific formulation) |
| Temperature Compensation | Manual (DDS-307), Automatic (DDS-307A & DDS-308) |
| Output Interface | 0–10 mV analog (DDS-307), RS232 (DDS-308) |
| Display | LED (DDS-307/307A), LCD (DDS-308) |
| 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 |
| Instrument Type | Benchtop Laboratory Conductivity Meter |
| Measurement Parameter | Single-parameter (Conductivity) |
| Conductivity Range | 0.00 µS/cm to 200 mS/cm |
| Accuracy | ±1.0% FS |
| Minimum Resolution | 0.01 µS/cm (auto-ranging) |
| Temperature Compensation | Manual |
| Calibration | 1-point calibration with auto-recognition of 4 GB-standard conductivity solutions |
| Electrode Constant Support | Automatic frequency switching compatible with K = 1.0 cell |
| Data Storage | 50 measurement sets |
| Display | High-resolution LCD with key-based navigation |
| Enclosure Rating | IP54 |
| Power Supply | AC/DC adapter (Input: 100–240 V AC |
| Output | 20 V DC / 1500 mA) |
| Dimensions (W×D×H) | 242 × 195 × 68 mm |
| Weight | 0.9 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | DDS-307 |
| Form Factor | Benchtop |
| Application Environment | Laboratory |
| Conductivity Range | 0.00 µS/cm to 200 mS/cm |
| Accuracy | ±1.0% FS |
| Minimum Resolution | 0.01 µS/cm |
| Temperature Compensation | Manual (15.0–35.0 °C) |
| Temperature Coefficient | Fixed at 2%/°C |
| Display | 3½-digit LED |
| Output Signal | 0–10 mV DC |
| Electrode Compatibility | DJS-1C platinized platinum conductivity cell (cell constant 0.01 cm⁻¹), titanium alloy electrode with sealed measurement chamber |
| Power Supply | AC 220 V ±22 V, 50 Hz ±1 Hz |
| Dimensions (W×D×H) | 290 × 210 × 95 mm |
| Weight | 1.5 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 |
| Model | DDS-307A |
| Form Factor | Benchtop |
| Application Environment | Laboratory |
| Conductivity Range | 0.00 µS/cm to 200 mS/cm |
| TDS Range | 0.00 mg/L to 100 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 |
| Conductivity Class | Class 1.0 per GB/T 11018 |
| IP Rating | IP54 |
| Data Storage | 50 measurement sets |
| Calibration | Single-point conductivity calibration with auto-recognition of 4 standard GB solutions |
| Temperature Compensation | Automatic and manual modes |
| Electrode Constant Support | Auto-frequency switching for K = 1.0 cell |
| 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 |