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Beijing Dequan Xingye Trading Co., Ltd.

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BrandMETTLER TOLEDO
OriginSwitzerland
ModelS500-B
Instrument TypeMultifunctional
Parameter TypesMulti-parameter
pH Measurement Range-2.000 to 20.000
pH Resolution0.001 / 0.01 / 0.1
pH Accuracy±0.002
mV Range-2000.0 to 2000.0 mV
mV Resolution0.1 / 1 mV
mV Accuracy±0.1 mV
Ion Concentration Range1.00E⁻⁹ to 9.99E⁺⁹ (units depend on ion selected)
Ion ResolutionLeast Significant Digit
Ion Accuracy±0.05 units (relative to concentration value)
Temperature Range-30.0 to 130.0 °C
Temperature Resolution0.1 °C
Temperature Accuracy±0.1 °C
Calibration PointsUp to 5-point calibration
Buffer Options8 pre-programmed + 20 user-defined buffers
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BrandMETTLER TOLEDO
OriginGermany
ModelFE28-Standard
Instrument TypeBenchtop (not portable — corrected per technical specification)
Parameter TypespH, mV, Temperature
Measurement Range-2.00 to 16.00 pH
Resolution0.01/0.1 pH, 1 mV, 0.1 °C
Accuracy±0.01 pH, ±1 mV, ±0.3 °C
Temperature CompensationAutomatic and Manual
Calibration PointsUp to 5-point
Calibration ModesLinear and Segmented
Predefined Buffers4 sets (including US, NIST, DIN, and Chinese standards)
Data Storage200 measurement records + current calibration data
ConnectivityBNC, Cinch, NTC 30 kΩ, RS232, USB
Display4.3-inch segmented LCD
Housing MaterialABS
Dimensions / Weight227 × 147 × 70 mm / 0.63 kg
Power Supply100–240 V AC, 50–60 Hz / 12 V DC
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BrandMETTLER TOLEDO
OriginSwitzerland
ModelSevenExcellence™
ComplianceGLP-compliant architecture
ConnectivityUSB, RS232, Ethernet, Bluetooth (optional)
Display7-inch full-color capacitive touchscreen
Data StorageInternal memory for ≥10,000 measurement records with timestamp, user ID, and electrode metadata
SecurityRole-based user access, audit trail, electronic signatures (21 CFR Part 11 ready)
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BrandMETTLER TOLEDO
OriginSwitzerland
ModelS220 / S230
Measurement RangepH: –2.000 to 20.000
mV/Rel.mV–2000.0 to 2000.0
Ion Concentration0.000–1000.0 %, 1.00E–9–9.99E+9 mmol/L, 1.00E–9–9.99E+9 mol/L, –2.000–20.000 pX
Conductivity0.001 µS/cm to 1000 mS/cm
TDS0.00 mg/L to 1000 g/L
Salinity0.00–80.00 psu, 0.000–10000.0 ppm
Resistivity0.00–100.0 MΩ·cm
Conductivity Ash0.000–2022 %
Temperature–30.0 to 130.0 °C
ResolutionpH: 0.001/0.01/0.1
Conductivity0.001–1 µS/cm
mV0.1/1
TDS0.01–1
Salinity/Resistivity0.00–1.0
Ash0.001–1
Temp0.1 °C
AccuracypH: ±0.002
Conductivity±0.5%
mV±0.2
TDS/Salinity/Resistivity/Ion Conc.±0.5%
Temp±0.1 °C
CalibrationUp to 5-point pH, 1-point conductivity
reference temp20 or 25 °C
endpointauto/manual/timed
stability modesfast/standard/strict
GLP ComplianceFull audit trail, user/sample/electrode ID logging, password protection (startup/data/system), measurement limit alerts, calibration due reminders, electrode performance indicator, 1000-data storage, GLP-compliant print/export (USB drive, LabX direct pH software), RS232/USB-A/USB-B interfaces, IP54 rating, operating ambient: 5–40 °C, 5–80% RH non-condensing
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BrandMETTLER TOLEDO
OriginBeijing, China
Manufacturer TypeAuthorized Distributor
Country of OriginChina
ModelperfectlON™
Pack Size5 × 60 mL per variant
Compatible Electrode SeriesperfectION™ Composite Ion-Selective Electrodes (Ca²⁺, F⁻, Ag⁺/S²⁻, Cl⁻, CN⁻, Pb²⁺, Cu²⁺, I⁻, K⁺, NO₃⁻)
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BrandMETTLER TOLEDO
OriginSwitzerland
Instrument TypePortable
Measurement ParameterspH, mV, Ion Concentration, Conductivity, TDS, Resistivity, Salinity, Dissolved Oxygen (DO), Temperature
pH Range0–14
pH Resolution0.1
pH Accuracy±0.1
DO Measurement PrinciplePolarographic (SG23/SG68/SG78) or Optical (SG6/SG7/SG8/SG9/SG98)
Temperature CompensationLinear & Non-linear for Conductivity
Calibration StandardsNIST-type (China version) / USA-type (International version)
Ingress ProtectionIP67
Data Storage CapacityUp to 500 GLP-compliant records
InterfaceInfrared (IR)
Power Supply4× AA alkaline or NiMH rechargeable batteries
Electrode TechnologyIntelligent Sensor Management (ISM) enabled
Operating ModesStandard & Expert
DisplayBacklit LCD
ComplianceGLP, ISO/IEC 17025-supportive data handling, FDA 21 CFR Part 11-ready with optional software
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BrandMETTLER TOLEDO
OriginGermany
Instrument TypePortable
Parameter CapabilityMulti-parameter (pH, mV, °C, Conductivity)
pH Range–2.00 to 16.00
mV Range–2000 to +2000 mV
Temperature Range5 to 105 °C
pH Resolution0.01 / 0.1
mV Resolution1 mV
Temperature Resolution0.1 °C
pH Accuracy±0.01
mV Accuracy±1 mV
Temperature Accuracy±0.3 °C
Calibration PointsUp to 5-point (linear or segmented)
Predefined Buffers4 sets
Data Storage Capacity200 measurement records
Electrode InterfacesBNC, Cinch, NTC 30 kΩ
ConnectivityRS232, USB
ATC SupportYes (optional probe, P/N 12997876)
Display4.3-inch segment LCD
Housing MaterialABS
Dimensions (W × H × D)227 × 147 × 70 mm
Weight0.63 kg
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BrandMETTLER TOLEDO
OriginGermany
ModelLE438
Instrument TypePortable
Parameter TypesMulti-parameter
pH Measurement Range0–14.0
Resolution0.1 pH
Accuracy±0.1 pH
Calibration BufferspH 4.01 / 7.00 / 9.21
Temperature Range0 °C to 80 °C
Electrode Body MaterialPOM (Polyoxymethylene)
Electrode Length120 mm
Electrode Diameter12 mm
Cable Length1 m
ConnectorBNC/RCA (Cinch)
Reference SystemAg/AgCl
Reference ElectrolyteGel-filled
Glass Membrane TypeU-type
Electrode Impedance (25 °C)< 250 MΩ
Integrated Temperature SensorNTC 30 kΩ
Liquid JunctionPolyester
Maintenance-Free DesignYes
Signal OutputAnalog
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BrandMETTLER TOLEDO
OriginGermany
ModelFE28-Meter
Instrument TypePortable
Parameter TypespH, Conductivity, Dissolved Oxygen
pH Measurement Range−2.00 to 16.00
pH Resolution0.01
pH Accuracy±0.01 (at 25 °C)
pH Calibration PointsUp to 5
Predefined Buffer Sets4
Temperature Range0 to 105 °C
Temperature Resolution0.1 °C
Temperature Accuracy±0.3 °C
Temperature CompensationAutomatic (ATC) and Manual (MTC)
Data Storage200 measurement records + active calibration data
InterfaceRS232 and USB
Reference InputYes
Audible SignalYes
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BrandMETTLER TOLEDO
OriginSwitzerland
ModelS220
Measurement Range-2 to 20 pH
Resolution0.001 pH
Accuracy±0.002 pH
Calibration Precision0.001 pH
Calibration SolutionsUniversal buffer sets
Temperature Sensor CompatibilityNTC 30 kΩ and Pt1000 probes
ComplianceGLP, USP <645>, EP 2.2.38, ChP (Chinese Pharmacopoeia) Water Conductivity Requirements
ConnectivityUSB host/device, RS232, analog output, optional printer/computer/U-disk/magnetic stirrer interface
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