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Shanghai Yidian Scientific Instrument Co., Ltd.

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BrandLeici
OriginShanghai, China
Manufacturer TypeOriginal Equipment Manufacturer (OEM)
Product CategoryDomestic Industrial Instrument
ModelDDG-5205A
Price RangeUSD 850–1,420 (FOB Shanghai)
Conductivity Range0.000 µS/cm to 10.0 mS/cm (dependent on cell constant: K=0.01 cm⁻¹: 0–20 µS/cm
K=0.1 cm⁻¹1–200 µS/cm
K=1.0 cm⁻¹10–10,000 µS/cm)
Temperature Range−10.0 to 120.0 °C
Temperature Compensation Range5.0 to 60.0 °C (reference temp: 25.0 °C)
Conductivity Resolution0.001 / 0.01 / 0.1 / 1 µS/cm (auto-ranging)
Temperature Resolution0.1 °C
Basic Error±2.0% FS (conductivity), ±0.5 °C (0.0–60.0 °C), ±1.0 °C (outside range)
Repeatability1.0% FS
Electronic Unit Accuracy±1.0% FS (conductivity), ±0.3 °C (temperature)
Drift Stability±0.5% FS/24 h
Enclosure RatingIP65
Power SupplyAC 220 V ±10%, 50 Hz ±1% or DC 24 V ±15%
Dimensions166 × 166 × 110 mm
Weight~2.0 kg
Data Storage400 records with configurable logging interval
OutputIsolated 4–20 mA DC (user-defined upper/lower limits)
Digital InterfaceRS-232 or RS-485 (selectable)
Auto-Cleaning SupportYes
Alarm FunctionsProgrammable high/low limit alerts with relay output
Power Failure ProtectionNon-volatile memory retention
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BrandLeici
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
Country of OriginChina
ModelSJG-705
Price RangeUSD 7,000 – 14,000
Display7-inch color TFT touchscreen (Chinese UI)
Communication InterfacesRS-232 OR RS-485 OR Ethernet (user-selectable)
Measurement ModesContinuous & programmable interval logging
Data StorageInternal non-volatile memory supporting >100,000 records
OptionalAutomated cleaning module for sensors and flow cell
Parameters SupportedpH, ORP, Conductivity/TDS, Dissolved Oxygen (DO), Turbidity (NTU), Temperature
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BrandLeici
OriginShanghai, China
Manufacturer TypeManufacturer
Product OriginDomestic (China)
ModelSJG-209
PriceUSD 1,380 (FOB Shanghai)
Resolution0.01 mg/L
Measurement Range(0.0–20.0) mg/L
Repeatability≤ 0.20 mg/L
Stability±0.20 mg/L / 24 h
Temperature Compensation Range(0.0–50.0) °C
Communication InterfaceRS-485
Dimensions166 × 166 × 110 mm
Weight2.5 kg
DO Saturation Range(0.0–200.0) %
Temperature Range(0.0–50.0) °C
DO Accuracy±0.30 mg/L
Saturation Accuracy±10.0 %
Temperature Accuracy±0.2 °C
Output SignalIsolated 4–20 mA DC, max load 600 Ω
Alarm Outputs2 relay outputs (220 V AC, 2.5 A resistive)
Cleaning Control Output1 programmable relay output (220 V AC, 2.5 A)
Data Storage2000 records with timestamp
Enclosure RatingIP65
Power Consumption10 W
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BrandLeici
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
Regional OriginDomestic (China)
ModelPHBJ-261L
Instrument TypePortable
Parameter TypesMulti-parameter
pH Measurement Accuracy±0.002 pH
pH Range−2.000 to 20.000 pH
pH Resolution0.001 pH
mV Range−2000.00 to 2000.00 mV
mV Resolution0.01 mV
Temperature Range−10.0 to 135.0 °C
Temperature Resolution0.1 °C
Temperature Accuracy±0.1 °C
Calibration Standards SupportedGB, DIN, NIST, USA, MERCK, JIS
IP RatingIP65
BatteryRechargeable Li-ion
Dimensions (L×W×H)90 × 255 × 40 mm
Weight0.5 kg
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BrandLeichi
OriginShanghai, China
Manufacturer TypeManufacturer
Country of OriginChina
ModelDGB-421
Measurement Range0–50 PCU (Platinum-Cobalt Units)
Accuracy±5% or ±1 PCU
Repeatability≤3.0%
Protection RatingIP65
Power Supply4×AA batteries or USB 5V DC
Dimensions100 × 220 × 80 mm
Weight0.8 kg
DisplayHigh-resolution LCD
CalibrationZero and full-scale calibration with Pt-Co standard solutions
Data Storage200 sets
ComplianceGB/T 5750.4–2023 (Standard Methods for Examination of Drinking Water – Color)
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BrandLeichi
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
Origin CategoryDomestic (China)
ModelWZS-186
Price RangeUSD 700–1,400
Form FactorBenchtop / Laboratory
Measurement Range0.000–2000 NTU
Resolution0.001 NTU
Operating Temperature5–35 °C
Accuracy±6%
Light SourceInfrared LED
ComplianceISO 7027, HJ 1075-2019
Protection RatingIP54
Display7-inch color TFT touchscreen
Measurement PrinciplesNephelometric (90° scatter) and Ratio Scatter-Transmission
UnitsNTU, FNU, EBC
Calibration OptionsSingle-point or multi-point (20/200/500/1000/2000 NTU), zero adjustment, factory reset
Data ManagementOnboard storage, USB export, RS-232 printer interface
Software InterfacePC communication via dedicated software
GLP SupportAudit trail, timestamped records, user login (if enabled), data traceability
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BrandLeici
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
Regional ClassificationDomestic (China)
ModelZDCL-2
Instrument CategoryGeneral-Purpose Potentiometric Titrator
Application SpecificityDedicated for Chloride Ion Analysis
Measurement Range(−1800.0 to +1800.0) mV
Meter Accuracy±0.20% of full scale
Meter Resolution0.1 mV
Titration Accuracy(±0.3 mV ±1 digit) over 3 hours
Titration Resolution1/10,000
Titration Repeatability≤0.20%
Burette Error±0.025 mL (10 mL burette), ±0.035 mL (20 mL burette)
Stability±0.3 mV / 3 h
Operating Environment0–40 °C, ≤85% RH
Dimensions & Weight340 × 400 × 400 mm, ~10 kg
Power SupplyAC 220 V ±10%, 50 Hz ±1 Hz
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BrandLeici
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
Country of OriginChina
ModelSFS-101J Halogen Moisture Analyzer
Price RangeUSD 720 – 1,430 (FOB)
Weighing Range0.2 g to 110 g
Readability1 mg (d), 10 mg (e)
Moisture Readability0.01%
Accuracy ClassClass II (per OIML R76)
Minimum Sample Mass1 g
Heating SourceCircular Halogen Lamp
Temperature Control RangeAmbient to 200 °C
Heating Chamber MaterialStainless Steel
Sample Pan Diameter90 mm
Measurement EndpointsAuto, Manual, and Semi-Automatic Modes
Displayed ParametersMoisture %, Dry Matter %, ATRO Dry Basis %, ATRO Wet Basis %
Drying ProgramsStandard, Fast, and Slow Drying
Timer Range0–90 min
Real-time DisplayCurrent Temperature, Elapsed Time, Instantaneous Moisture %
InterfaceRS-232 Serial Port for Printer Output
Power Supply220 V ±10%, 50/60 Hz
Dimensions (W×D×H)330 × 200 × 200 mm
Net Weight5.8 kg
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BrandLeici
OriginShanghai, China
Manufacturer TypeManufacturer
Product OriginDomestic (China)
ModelPHS-3C
Instrument TypeBenchtop
Parameter TypeDual-parameter (pH/mV)
pH Accuracy±0.01 pH
pH Range–2.00 to 18.00 pH
Resolution0.01 pH
mV Range–1999 to +1999 mV
mV Resolution1 mV
mV Accuracy±0.1% FS
Temperature CompensationManual
Calibration Points1–3 point pH calibration
Buffer RecognitionAutomatic identification of GB standard buffers (pH 4.00, 6.86, 9.18)
Data Storage50 measurement sets
DisplayLCD with backlight
Protection RatingIP54
Power SupplyAC 100–240 V input, DC 20 V / 1500 mA output
Dimensions (W×D×H)242 × 195 × 68 mm
Weight0.9 kg
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BrandLeici
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
Origin CategoryDomestic (China)
ModelHY-2
Price¥980
Speed ControlTouch-Start & Continuous Operation
Operating ModeTouch-Start & Continuous Operation
Oscillation TypeCircular Orbit (Planar)
Housing MaterialFlame-Retardant ABS
Amplitude4.5 mm / 6 mm
Speed IndicationAnalog Dial Scale
Speed Range0–2800 rpm
Voltage100–120 VAC / 200–240 VAC (Optional)
Power60 W
Frequency50/60 Hz
Motor TypeShaded-Pole Motor
Orbit Diameter4 mm
Dimensions (L×W×H)170 × 120 × 140 mm
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BrandLeici
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
Regional OriginDomestic (China)
ModelPHBJ-260F
Price RangeUSD 420–690
Instrument TypePortable
Parameter TypesMulti-parameter
pH Accuracy±0.01 pH
pH Measurement Range−2.00 to 20.00 pH
pH Resolution0.01 pH
mV Range−2000.0 to +2000.0 mV
mV Resolution0.1 mV
Temperature Range−5.0 to 110.0 °C (23.0 to 230.0 °F)
Temperature Resolution0.1 °C/°F
Temperature Accuracy±0.2 °C
Calibration Standards SupportedGB, DIN, NIST
IP RatingIP65
Data Storage Capacity1000 datasets
Power SourceRechargeable Li-ion battery (DC5V input via AC adapter or USB power bank)
Dimensions90 × 255 × 40 mm
Weight0.5 kg
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BrandLeiCi
OriginShanghai, China
Manufacturer TypeManufacturer
Product CategoryDomestic
ModelZDJ-5B-T
Instrument TypeGeneral-purpose Potentiometric Titrator
Application ScopeUniversal
Measurement Range(−2000.00 to 2000.00) mV
Meter AccuracymV: ±0.03% or ±0.2 mV
pH±0.002 pH
Meter Resolution0.01 mV, 0.001 pH
Titration Precision0.0003 mL
Titration Resolution1/30000
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BrandLeici
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
Regional OriginDomestic (China)
ModelWZB-176E
Product TypePortable
Measurement Range(0.00–9.99) NTU, (10.00–99.9) NTU, (100.0–999) NTU, (1000–2000) NTU
Resolution0.01 NTU / 0.1 NTU / 1 NTU
Operating Temperature5–35 °C
Accuracy±6%
Repeatability≤0.5%
Zero Drift±0.5% FS/30 min
Stability±0.5% FS/30 min
Calibration PointsUp to 6 points (2, 20, 200, 500, 1000, 2000 NTU)
Data Storage Capacity2000 records
Display4.3-inch color TFT touchscreen
Protection RatingIP65
Power SupplyRechargeable Li-ion battery
Dimensions & Weight90 × 250 × 90 mm, approx. 0.8 kg
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BrandLeici
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
Region of OriginDomestic (China)
ModelJB-41TP
Instrument TypeMagnetic Stirrer
Max Stirring Volume5000 mL
Speed Range100–2000 rpm
Hotplate Temperature RangeAmbient to 380 °C
Solution Temperature Control RangeAmbient to 250 °C
Speed Accuracy±10 rpm
Speed Stability±10 rpm over 4 h
Temp. Display Accuracy (Hotplate)±0.5 °C
Temp. Display Accuracy (Solution)±1.0 °C
Solution Temp. Fluctuation≤1.0 °C per 10 min
Heating Power700 W
Work Surface145 mm × 145 mm, Aluminum Alloy with Ceramic Coating
Dimensions160 × 280 × 95 mm
Weight2.4 kg
Power SupplyAC 220 V ±10 %, 50 Hz
Operating Environment0–40 °C, RH ≤85 % non-condensing
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BrandLeici
OriginShanghai, China
Manufacturer TypeOriginal Equipment Manufacturer (OEM)
Country of OriginChina
ModelZD-2
PricingAvailable Upon Request
DisplayHigh-Resolution LCD
Measurement ModesManual Titration, Automatic Endpoint Titration, Controlled-Drop Titration
Measurable ParametersmV (–1400 to +1400 mV, 1 mV resolution), pH (0.00–14.00, 0.01 pH resolution), Temperature (0–100 °C, 0.1 °C resolution)
Electrode SupportpH composite electrode, Ag electrode, reference electrode, temperature sensor
CalibrationUp to 2-point manual or automatic pH calibration
CompensationAutomatic/manual temperature compensation
InterfaceRS-232 for printer output
StirringIntegrated JB-11 magnetic stirrer
Burette CompatibilityExternal 10 mL or 25 mL burettes
Accuracy±0.35% FS for mV (±4.9 mV), ±0.03 pH, ±0.5 °C (0–60 °C), ±2.5% volumetric error, 0.3% repeatability
Endpoint Detection Sensitivity±5 mV or ±0.1 pH
Endpoint Delay AdjustmentAdjustable (±2 s error)
PowerAC 100–240 V input, DC 20 V output
Dimensions & Weight218 × 180 × 66 mm, ~0.7 kg
Operating Environment0–40 °C, ≤85% RH
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BrandLeici
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
Product OriginDomestic (China)
ModelDGB-402F
Instrument TypePortable
Measurement PrincipleDPD Spectrophotometry
Measured ParametersResidual Chlorine, Total Chlorine
Range0–3.00 mg/L (Residual & Total Chlorine)
Accuracy±3% or ±0.02 mg/L
Repeatability≤1.0%
Resolution0.001 mg/L (Concentration), 0.001 ABS (Absorbance)
LOD≤0.02 mg/L
Wavelength515 nm
Calibration1–3 Point Calibration
Data Storage200 Sets Each for Residual and Total Chlorine
Cuvette Size25 mm Round Cell
Operating Temperature5–35 °C
Relative Humidity≤85% RH
Power SupplyRechargeable Lithium Battery
Dimensions (L×W×H)230 × 85 × 50 mm
Weight~0.5 kg
IP RatingIP65
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BrandLeici
OriginShanghai, China
Manufacturer TypeManufacturer
Country of OriginChina
ModelDZS-708T
Instrument TypeLaboratory Water Quality Analyzer
Measurable ParameterspH, Conductivity, Ion Concentration (Na⁺, K⁺, NH₄⁺, Cl⁻, F⁻, etc.), Dissolved Oxygen (DO), ORP, TDS, Salinity, Resistivity, Ash Content (White Sugar & HFCS), Temperature
Accuracy ClasspH/pX: 0.001-grade
Conductivity0.5-grade
Measurement RangespH (-2.000–20.000)
ResolutionpH/ pX: 0.001
mV0.01
Conductivity0.001 μS/cm (auto-ranging)
DO0.01 mg/L
Temp0.1 °C
Key ComplianceGLP-compliant data management, FDA 21 CFR Part 11-ready audit trail (via software configuration), GMP-aligned user permission hierarchy and operation logging
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BrandLeici
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
Regional ClassificationDomestic (China)
ModelJPSJ-606T
Price RangeUSD 700–1,400
Instrument TypeLaboratory Benchtop
Measurement PrinciplePolarographic Electrochemical Probe
Dissolved Oxygen Range (Electronic Unit)0.00–99.99 mg/L
Accuracy±0.10 mg/L (0.00–50.00 mg/L)
Instrument Accuracy±0.30 mg/L (≤20.00 mg/L)
Repeatability±2.0%
Response Time≤45 s (90% response at 20.0 °C)
Temperature CompensationAutomatic
Atmospheric Pressure CompensationManual or Auto (kPa, mbar, Torr, atm)
Salinity CompensationManual
Saturation Range0.0–600.0 %
Temperature Range−10.0–135.0 °C
Temperature Accuracy±0.3 °C (0.0–60.0 °C)
Data Storage Capacity1,000 datasets
ConnectivityRS-232, USB, optional LIMS integration
ComplianceGLP, GMP-ready audit trail support
IP RatingIP54
Power SupplyAC 100–240 V → DC 24 V adapter
Dimensions & Weight220 × 195 × 68 mm, 0.95 kg
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BrandLeici
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
Origin CategoryDomestic (China)
ModelJB-31
Instrument TypeMagnetic Stirrer
Maximum Stirring Volume5000 mL
Speed Range100–2000 rpm
Speed Display Accuracy±10 rpm
Speed Stability±10 rpm over 4 h
Timer Range0 min – 99 h 59 min
Timer Accuracy±1 min/h
Stir Bar CompatibilityΦ5×20 mm, Φ7×30 mm, Φ10×60 mm (standard supplied)
Heating FunctionNone
Work Surface MaterialAluminum alloy with ceramic coating
Work Surface Dimensions145 mm × 145 mm
Housing MaterialEngineering plastic
Operating Environment0–40 °C
Power SupplyAC 220 ± 22 V, 50 ± 1.0 Hz
Dimensions (L×W×H)160 × 280 × 95 mm
Net Weight~1.8 kg
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BrandLeici
OriginShanghai, China
Manufacturer TypeOriginal Equipment Manufacturer (OEM)
Country of OriginChina
ModelDZB-718L-G
Instrument TypePortable / Handheld Water Quality Analyzer
Measured ParameterspH / pX, Ion Concentration, mV, Conductivity, Resistivity, TDS, Salinity, Ash Content, Dissolved Oxygen (DO), DO Saturation, Temperature
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BrandLeici
ModelPH-30
TypePen-Style pH Meter
Measurement Range(-2.00 to 16.00) pH
Resolution0.01 pH
Accuracy±0.02 pH
Repeatability≤0.01 pH
mV Range-1000 to +1000 mV
mV Resolution1 mV
Temperature Range(0.0 to 60.0) °C
Temp. Resolution0.1 °C
Temp. Accuracy±0.3 °C
ATC Range(0.0 to 60.0) °C
Calibration Points1–3 point (auto-recognized GB & US buffers)
IP RatingIP67
Power4 × AAA batteries
Battery Life>200 h
Dimensions40 × 30 × 188 mm
Weight~0.15 kg
Housing MaterialABS
Electrode OptionsSpherical, Flat-Surface, or Conical pH Sensing Tips
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BrandLeici
OriginShanghai, China
Manufacturer TypeManufacturer
Product CategoryDomestic
ModelPHSJ-6L
Instrument TypeBenchtop
Parameter TypesMulti-parameter
Measurement Accuracy0.001 pH / ±0.002 pH
Measurement Range(−2.000 to 20.000) pH
Resolution0.001 pH
Temperature Range(−10.0 to 135.0) °C
Temperature Resolution0.1 °C
Temperature Accuracy±0.1 °C (electronic unit)
Calibration Standards SupportedGB, DIN, NIST, USA, MERK, JIS
Protection RatingIP54
Channels4 modular slots (expandable to 4 pH modules)
Data Storage Capacity1000 pH measurements, 100 calibration records, 1000 standard verification logs
InterfaceRS-232, USB, optional barcode scanner & autosampler integration
ComplianceGLP-compliant
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BrandLeici
OriginShanghai, China
Manufacturer TypeOriginal Equipment Manufacturer (OEM)
Product CategoryDomestic
ModelZDJ-5B-G Automatic Potentiometric Titrator
Instrument TypeGeneral-purpose Potentiometric Titrator
Application ScopeUniversal
Measurement RangemV: (−2000.00 to +2000.00) mV
pH(0.000 to 20.000) pH
Meter AccuracymV: ±0.03% or ±0.2 mV
pH±0.002 pH
Meter Resolution0.01 mV, 0.001 pH
Titration Precision0.0003 mL
Titration Resolution1/30000
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BrandLeici
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
Product CategoryDomestic (China-Made)
ModelJB-31TP
Instrument TypeMagnetic Stirrer
Maximum Stirring Volume5000 mL
Speed Range100–2000 rpm
Temperature Control Range (Hotplate Surface)Ambient to 280 °C
Temperature Control Range (Solution)Ambient to 180 °C
Speed Accuracy±10 rpm
Speed Stability±10 rpm over 4 h
Temperature Accuracy (Hotplate)±0.5 °C
Temperature Accuracy (Solution)±1.0 °C
Temperature Fluctuation (Solution)≤1.0 °C per 10 min
Heating Power700 W
Work Surface145 mm × 145 mm, Aluminum Alloy with Ceramic Coating
Dimensions160 × 280 × 95 mm
Weight~1.8 kg
Power SupplyAC 220 V ±10 %, 50 Hz
Operating Environment0–40 °C, RH ≤85 %
Timer Range0 min–99 h 59 min
Timer Accuracy±1 min/h
Standard AccessoriesT-820D-J Temperature Probe, Magnetic Stir Bars (Φ5×20 mm, Φ7×30 mm, Φ10×60 mm), Electrode Holder (3-position), Support Stand
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