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Tianjin Chenhang Keyuan Technology Development Co., Ltd.

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BrandSofTA
OriginImported
Manufacturer TypeAuthorized Distributor
ModelModel 300S
Detection PrincipleEvaporative Light Scattering
Compatible SystemsHPLC (Analytical & Preparative)
Wavelength Range195–600 nm
Optical ConfigurationDual-Beam
Light SourceDeuterium Lamp
Nebulizer MaterialPTFE (Teflon®)
Drift Tube Temperature RangeAmbient to 120 °C
Nebulization Zone Temperature Range10–70 °C
Light Source for Detection650 nm Near-Infrared Laser (<5 mW, FCC Class I Eye-Safe)
Detector ElementSealed, Large-Area Silicon Photodiode with Integrated High-Gain Amplifier
Minimum Detectable Mass100 pg Glucopyranoside (Micro-HPLC, 2 µL direct injection, peak width at 10% height: 3 s)
Dynamic Range (Normal Gain)3 decades
Dynamic Range (Extended Mode)4–4.5 decades
Mobile Phase Flow Rate CompatibilityUp to 5 mL/min
Carrier GasNitrogen or other inert gas
Gas Pressure Requirement50 psi
Gas Consumption≤2.5 L/min
Integrated Gas Pressure RegulationYes (Built-in Regulator & Overpressure Protection)
Auto Shut-off ValveYes (Timed Delay Cutoff)
Fluidic Path MaterialsPTFE, Stainless Steel, Alumina, Borosilicate Glass (Optical Lens)
User InterfaceVacuum Fluorescent Display (VFD) + 4 Multifunction Keys
Onboard Method Storage10 Methods
Signal Output OptionsFixed 10 mV / 5 V
Communication InterfaceRS-232 (Rear Panel)
Power Supply120/240 V AC, 50/60 Hz, 600 W
Dimensions (W×D×H)25 × 45 × 29 cm
Weight15 kg
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BrandShodex
OriginImported
Manufacturer TypeAuthorized Distributor
ModelRI-201H
Instrument TypeRefractive Index Detector (RID)
Compatible SystemHigh-Performance Liquid Chromatography (HPLC)
Refractive Index Range1.00–1.75
Detection Range0.25–512 μRIU
Drift≤0.2 μRIU/h (deionized water, 1 mL/min, purge off)
Linearity≥600 μRIU
Noise≤2.5 nRIU (deionized water, 1.5 s response)
Response Time Settings0.1, 0.25, 0.5, 1, 1.5, 2, 3, 6 s
Auto-ZeroFull-range automatic zeroing
Offset Adjustment Range±10 μRIU
Offset Resolution50 nRIU
Cell Volume8 µL
Flow Rate Range0.2–3.0 mL/min (typical), up to 10 mL/min (water)
Max Backpressure50 kPa
Internal Dead VolumeIN→Cell ≈60 µL
Temperature ControlOFF, 30–55 °C (1 °C increments), 77 °C thermal cutoff
InterfaceUSB
Wetted MaterialsSS316, PTFE, fused silica
PowerAC 100–240 V ±10%, 50/60 Hz, 150 VA
Dimensions & Weight260 × 400 × 150 mm (W×D×H), ~12 kg
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BrandShodex
OriginImported
Manufacturer TypeAuthorized Distributor
ModelRI-201
Instrument TypeRefractive Index Detector (RID)
Compatible SystemHPLC
Refractive Index Range1.00–1.75
Detection Range0.125–256 µRIU
Drift≤0.1 µRIU/h
Noise≤1 nRIU
Linear Range≥300 µRIU
Flow Rate (Typical)0.2–3.0 mL/min
Max Flow Rate (Water)10 mL/min
Cell Volume8 µL
Dead Volume (IN→Cell)~80 µL
Dead Volume (Cell→OUT)~600 µL
Total Dead Volume~690 µL
Temperature Control Range30–55 °C (1 °C increments), with dual-stage thermal regulation
Response Time Settings0.1, 0.25, 0.5, 1, 1.5, 2, 3, 6 s
Auto-Zero FunctionFull-range, fully automatic
Offset Adjustment Range±5 µRIU
Offset Resolution25 nRIU
Analog OutputDC 0–1 V (4 mV/µRIU or 16 mV/µRIU selectable)
Recorder Output0–10 mV/FS
Communication InterfaceUSB
Wetted MaterialsSUS316 Stainless Steel, PTFE, Quartz Glass
Power SupplyAC 100–240 V ±10%, 50/60 Hz, 150 VA
Dimensions & Weight260 × 400 × 150 mm (W×D×H), ~12 kg
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Manufacturer TypeAuthorized Distributor
Model300s ELSD
Detection PrincipleEvaporative Light Scattering Detection (ELSD)
Wavelength Range200 nm (UV cutoff, not emission wavelength)
Optical ConfigurationDual-beam
Light SourceDeuterium Lamp (for baseline stability reference), NIR Laser (650 nm, <5 mW) as primary scattering source
Nebulizer MaterialPTFE (Teflon®)
Drift Tube Temperature RangeAmbient to 120 °C
Nebulization Zone Temperature Range10–70 °C
Sensitivity100 pg glucopyranoside (micro-HPLC, 2 µL direct injection, peak width at 10% height = 3 s)
Dynamic Range3 orders of magnitude (standard gain), extendable to 4–4.5 orders with gain optimization
Flow Rate CompatibilityUp to 5 mL/min (HPLC & preparative LC)
Gas RequirementN₂ or inert gas, 50 psi supply, ≤2.5 L/min consumption
Integrated Pressure RegulationYes, with automatic shutoff delay and overpressure protection
Signal OutputFixed 10 mV or 5 V
InterfaceRS-232 (rear panel), digital status I/O (zero control, valve control, error reporting)
Power120/240 V AC, 50/60 Hz, 600 W
Dimensions25 W × 45 D × 29 H cm
Weight15 kg
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BrandCoMetro
ModelRI2000
Detection PrincipleDifferential Refractometry
Refractive Index Range1.00–1.75
Flow Rate Range0.2–3.0 mL/min
Linear Range0–1000 µRIU (80 × 10⁻⁵ RIU)
Noise Level5 × 10⁻¹⁰ RIU (typical)
Auto-Zero Range±40 × 10⁻⁵ RIU
Auto-Zero Resolution5 × 10⁻¹⁰ RIU
Cell Volume9 µL
Maximum Cell Pressure6 kg/cm² (≈0.6 MPa)
Temperature ControlAmbient, 35 °C or 55 °C (microprocessor-regulated)
Analog Outputs±1 V (integrator), ±10 V (recorder)
selectable gains10 mV, 100 mV, 1 V
Digital I/OTTL-compatible inputs/outputs (5 Vdc or 12 Vdc) for marker, polarity, wash, auto-zero, temperature, solvent recirculator
Power Supply220 V AC, 50/60 Hz, 80 VA
Dimensions58.4 cm (W) × ? cm (D) × ? cm (H)
Weight16 kg (35 lbs)
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BrandSofTA
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Manufacturer TypeAuthorized Distributor
Model300s
Detection PrincipleEvaporative Light Scattering (ELSD)
Wavelength650 nm (Near-Infrared Laser)
Beam ConfigurationDual-Beam
Light Source650 nm NIR Laser (<5 mW, FCC Eye-Safe Compliant)
NebulizerPTFE-Coated Stainless Steel Capillary
Drift Tube Temperature RangeAmbient to 120 °C
Nebulization Zone Temperature Range10–70 °C
Sensitivity100 pg Glucopyranoside (Micro-HPLC, 2 µL direct injection, peak width at 10% height = 3 s)
Dynamic Range3 decades (normal/low gain), extendable to 4–4.5 decades with signal processing
Flow Rate CompatibilityUp to 5 mL/min (HPLC & preparative LC)
Gas RequirementN₂ or other inert gas, 50 psi inlet pressure
Gas Consumption≤2.5 L/min
Integrated Pressure RegulationYes, with automatic shutoff delay and overpressure protection
Fluidic Path MaterialsPTFE, 316 stainless steel, alumina, borosilicate glass (optical lens)
User InterfaceVacuum Fluorescent Display (VFD), 4 multifunction buttons
Onboard Method Storage10 user-defined methods
Signal OutputFixed 10 mV or 5 V
Digital InterfaceRS-232 (rear panel)
Power120/240 V AC, 50/60 Hz, 600 W
Dimensions (W×D×H)25 × 45 × 29 cm
Weight15 kg
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BrandSofTA
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Manufacturer TypeAuthorized Distributor
ModelM300S
Detection PrincipleEvaporative Light Scattering
Compatible SystemsHPLC (Analytical & Preparative)
Wavelength Range195 nm (UV-Vis Deuterium Lamp for Optional UV Monitoring)
Detection ModeDual-Beam
Light SourceDeuterium Lamp
Nebulizer MaterialPTFE (Teflon®)
Drift Tube Temperature RangeAmbient to 120 °C
Nebulization Zone Temperature Range10–70 °C
Laser Source650 nm Near-Infrared Diode (<5 mW, FCC Class I Eye-Safe)
Minimum Detectable Mass100 pg (Glucopyranoside, Micro-HPLC, 2 µL direct injection)
Peak Width (10% height)3 s
Dynamic Range (Normal/Low Gain)3 decades
Extended Dynamic Range4–4.5 decades
Mobile Phase Flow RateUp to 5 mL/min
Gas RequirementNitrogen or inert gas, 50 psi
Gas Consumption≤2.5 L/min
Liquid Path MaterialsPTFE, Stainless Steel, Alumina, Borosilicate Glass
InterfaceRS-232
Power120/240 V, 50/60 Hz, 600 W
Dimensions (W×D×H)25 × 45 × 29 cm
Weight15 kg
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BrandSofTA
OriginImported
Manufacturer TypeAuthorized Distributor
ModelM300S
Detection PrincipleEvaporative Light Scattering
Compatible SystemsHPLC (Analytical & Preparative)
Wavelength195 nm (Deuterium Lamp, Dual-Beam Configuration)
NebulizerPTFE-Coated Stainless Steel
Drift Tube Temperature RangeAmbient to 120 °C
Nebulization Zone Temperature Control10–70 °C
Light SourceNear-Infrared Laser (650 nm, <5 mW, FCC Class I Eye-Safe)
DetectorSealed High-Gain Silicon Photodiode
Minimum Detectable Mass100 pg (Glucopyranoside, Micro-HPLC, 2 µL direct injection)
Peak Width (10% height)3 s
Dynamic Range (Standard Gain)3 decades
Extended Dynamic Range4–4.5 decades
Mobile Phase Flow RateUp to 5 mL/min
Gas RequirementN₂ or inert gas, 50 psi
Gas Consumption≤2.5 L/min
Liquid Path MaterialsPTFE, 316 Stainless Steel, Alumina, Borosilicate Glass (Optics)
User InterfaceVacuum Fluorescent Display (VFD), 4 Multifunction Keys
Onboard Method Storage10 Protocols
Signal OutputFixed (10 mV / 5 V) or Adjustable (0–5 V)
CommunicationRS-232 (Rear Panel)
Power120/240 V AC, 50/60 Hz, 600 W
Dimensions (W×D×H)25 × 45 × 29 cm
Weight15 kg
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BrandCoMetro
ModelRI-2000
Detector TypeRefractive Index Detector (RID)
Compatible SystemLiquid Chromatography (HPLC/UHPLC)
Refractive Index Range1.00–1.75
Flow Rate Range0.2–3.0 mL/min
Linear Range80 × 10⁻⁵ RIU
Noise Level5 × 10⁻¹⁰ RIU
Auto-Zero Range40 × 10⁻⁵ RIU
Auto-Zero Resolution5 × 10⁻¹⁰ RIU
Integrator Output±1 V
Recorder Output±10 V
Analog Input/Output±5 VDC (TTL/12 VDC compatible)
Cell Volume9 µL
Maximum Cell Pressure6 kg/cm² (≈0.6 MPa)
Temperature Control OptionsAmbient, 35°C, or 55°C (microprocessor-controlled)
Dimensions58.4 × 45.7 × 21.3 cm (W × D × H)
Weight16 kg
Power Supply220 V, 50/60 Hz, 80 VA
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BrandSofTA
ModelM300s ELSD
Detector TypeEvaporative Light Scattering Detector (ELSD)
Light SourceDeuterium Lamp
Wavelength Range200 nm
Detection ModeDual-Beam
Nebulizer MaterialPTFE (Teflon)
Drift Tube Temperature RangeAmbient to 120 °C
Nebulization Zone Temperature Range10–70 °C
Light Source Wavelength650 nm (Near-Infrared Laser, <5 mW, FCC Eye-Safe)
Detection ElementSealed Large-Area Silicon Photodiode with Built-in High-Gain Amplifier
Sensitivity100 pg Glucopyranoside (Micro-HPLC, 2 µL direct injection, peak width at 10% height = 3 s)
Dynamic Range3 decades (normal/low gain), extendable to 4–4.5 decades
Mobile Phase Flow RateUp to 5 mL/min
Gas RequirementN₂ or other inert gas at 50 psi
Gas Consumption≤2.5 L/min
Fluidic Path MaterialsPTFE, Stainless Steel, Alumina, Borosilicate Glass
User InterfaceVacuum Fluorescent Display (VFD), 4 multifunction buttons
Signal OutputFixed 10 mV / 5 V
CommunicationRS-232 rear-panel interface
Power120/240 V, 50/60 Hz, 600 W
Dimensions25 W × 45 D × 29 H cm
Weight15 kg
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BrandSofTA
OriginImported
Manufacturer TypeAuthorized Distributor
ModelModel 100
Detection PrincipleEvaporative Light Scattering Detection (ELSD)
Compatible SystemHPLC / UHPLC
Light Source670 nm Laser (<5 mW)
Nebulizer GasN₂ or inert gas (50 psi, ~2.5 SLPM)
Operating Temperature55 °C (evaporator), ambient to 85 °C (environment)
Flow Rate Range0–5 mL/min
Detector ResponseMass-sensitive, gradient-compatible
Detection Limit10 ng (on-column, typical)
Dynamic Range>4 orders of magnitude
Precision<2% RSD
Output Signal0–5 VDC analog
InterfaceRS-232
Power Requirement120/240 VAC, 50/60 Hz, 600 W
Dimensions9.8" W × 18" D × 11.5" H
Weight23 lbs
Construction MaterialsStainless steel fluid path, Teflon™ tubing, fused silica optical windows
Environmental RatingIndoor use only
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BrandSofTA
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Manufacturer TypeAuthorized Distributor
ModelM300s
Compatible InstrumentHPLC Systems
Detector TypeEvaporative Light Scattering Detector (ELSD)
Wavelength Range200 nm (UV-Vis spectral cutoff, not tunable source)
Detection ModeDual-Beam
Light SourceDeuterium Lamp (for baseline stability reference), 650 nm Near-Infrared Laser (primary scattering source)
NebulizerPTFE (Teflon®) Capillary
Drift Tube Temperature RangeAmbient to 120 °C
Nebulization Zone Temperature Range10–70 °C
Sensitivity100 pg glucopyranoside (micro-HPLC, 2 µL direct injection, 3 s peak width at 10% height)
Dynamic Range3 decades (standard gain), up to 4.5 decades (extended range mode)
Mobile Phase Flow RateUp to 5 mL/min
Gas RequirementN₂ or inert gas, 50 psi supply pressure
Gas Consumption≤2.5 L/min
Power120/240 V, 50/60 Hz, 600 W
Dimensions25 W × 45 D × 29 H cm
Weight15 kg
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BrandSofTA
OriginImported
Manufacturer TypeAuthorized Distributor
ModelM300s
Detection PrincipleEvaporative Light Scattering
Compatible SystemsHPLC (Analytical & Preparative)
Wavelength Range195–600 nm
Optical ConfigurationDual-Beam
Light SourceDeuterium Lamp
Nebulizer MaterialPTFE (Teflon®)
Drift Tube Temperature RangeAmbient to 120 °C
Nebulization Zone Temperature Range10–70 °C
Laser Source650 nm Near-Infrared, <5 mW (FCC Class I Eye-Safe)
Detector ElementSealed, High-Gain Silicon Photodiode
Minimum Detectable Mass100 pg (Glucopyranoside, Micro-HPLC, 2 µL direct injection)
Peak Width (10% height)3 s
Dynamic Range (Normal/Low Gain)3 decades
Extended Dynamic Range4–4.5 decades
Mobile Phase Flow Rate SupportUp to 5 mL/min
Gas RequirementN₂ or inert gas, 50 psi
Gas Consumption≤2.5 L/min
Fluidic Path MaterialsPTFE, Stainless Steel, Alumina, Borosilicate Glass
User InterfaceVacuum Fluorescent Display (VFD), 4 Multifunction Keys
Onboard Method Storage10 Methods
Signal OutputFixed (10 mV / 5 V) or Adjustable (0–5 V)
CommunicationRS-232 (Rear Panel)
Power120/240 V, 50/60 Hz, 600 W
Dimensions (W×D×H)25 × 45 × 29 cm
Weight15 kg
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BrandSofTA
OriginImported
Manufacturer TypeAuthorized Distributor
Instrument TypeEvaporative Light Scattering Detector (ELSD)
Compatible SystemHPLC (Analytical & Preparative)
Wavelength Range195–600 nm
Detection ModeDual-Beam
Light SourceDeuterium Lamp
Nebulizer MaterialPTFE
Drift Tube Temperature RangeAmbient to 120 °C
Nebulization Zone Temperature Range10–70 °C
Laser Source650 nm Near-Infrared Diode (<5 mW, FCC Class I Eye-Safe)
Detector ElementSealed Large-Area Silicon Photodiode with Integrated High-Gain Amplifier
Minimum Detectable Mass100 pg Glucopyranoside (Micro-HPLC, 2 µL Direct Injection, 3 s Peak Width at 10% Height)
Dynamic Range3 orders of magnitude (Normal/Low Gain), Extended to 4–4.5 orders with gain optimization
Mobile Phase Flow RateUp to 5 mL/min
Gas SupplyNitrogen or inert gas, 50 psi inlet pressure
Gas Consumption≤2.5 L/min
Fluidic Path MaterialsPTFE, Stainless Steel, Alumina, Optical Glass
User InterfaceVacuum Fluorescent Display (VFD) with 4 Multifunction Keys
Onboard Method Storage10 Methods
Signal OutputFixed 10 mV or 5 V
Digital InterfaceRS-232 (Rear Panel)
Power120/240 V AC, 50/60 Hz, 600 W
Dimensions25 W × 45 D × 29 H cm
Weight15 kg
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BrandSofTA
OriginImported
Manufacturer TypeAuthorized Distributor
ModelModel 300s
Detection PrincipleEvaporative Light Scattering Detection (ELSD)
Wavelength Range195–600 nm
Optical ConfigurationDual-Beam
Light SourceDeuterium Lamp
Nebulizer MaterialPTFE (Teflon®)
Drift Tube Temperature RangeAmbient to 120 °C
Nebulization Zone Temperature Range10–70 °C
Laser Source650 nm Near-Infrared Diode (<5 mW, FCC Class I Eye-Safe)
DetectorSealed Large-Area Silicon Photodiode with Integrated High-Gain Amplifier
Minimum Detectable Mass100 pg Glucopyranoside (Micro-HPLC, 2 µL direct injection, peak width at 10% height: 3 s)
Dynamic Range3 decades (standard gain), up to 4.5 decades with extended range mode
Mobile Phase Flow Rate CompatibilityUp to 5 mL/min
Gas SupplyN₂ or other inert gas, 50 psi inlet pressure
Gas Consumption≤2.5 L/min
Liquid Path MaterialsPTFE, Stainless Steel, Alumina, Borosilicate Glass (optical lens)
User InterfaceVacuum Fluorescent Display (VFD), 4 multifunction buttons
Data OutputFixed 10 mV / 5 V analog
Power120/240 V AC, 50/60 Hz, 600 W
Dimensions (W×D×H)25 × 45 × 29 cm
Weight15 kg
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BrandSofTA
ModelM300s
Detector TypeEvaporative Light Scattering Detector (ELSD)
Wavelength Range195–600 nm
Detection MethodDual-Beam
Light SourceDeuterium Lamp
Nebulizer MaterialPTFE (Teflon®)
Drift Tube Temperature RangeAmbient to 120 °C
Nebulization Zone Temperature Range10–70 °C
Light Source for Scattering Detection650 nm Near-Infrared Laser (<5 mW, FCC Eye-Safe)
Minimum Detectable Mass100 pg (Glucopyranoside, Micro-HPLC, 2 µL direct injection)
Peak Width (10% height)3 s
Dynamic Range (Normal/Low Gain)3 decades
Extended Dynamic Range4–4.5 decades
Maximum Liquid Flow Rate5 mL/min
Gas SupplyN₂ or other inert gas, 50 psi
Gas Consumption≤2.5 L/min
Gas Pressure RegulationIntegrated pressure regulator and overpressure protection
Auto Shut-off ValveDelayed closure after operation
Wetted MaterialsPTFE, stainless steel, alumina, borosilicate glass
Signal OutputFixed 10 mV or 5 V
InterfaceRS-232 (rear panel)
Power120/240 V, 50/60 Hz, 600 W
Dimensions (W×D×H)25 × 45 × 29 cm
Weight15 kg
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BrandSofTA
ModelM300s
Detector TypeEvaporative Light Scattering Detector (ELSD)
Wavelength Range195 nm (Deuterium Lamp)
Detection PrincipleDual-Beam Light Scattering
Light SourceDeuterium Lamp
Drift Tube Temperature RangeAmbient to 120 °C
Nebulizer Zone Temperature Range10–70 °C
Nebulizer MaterialPTFE (Teflon®)
Minimum Detectable Mass100 pg (Glucopyranoside, Micro-HPLC)
Peak Width (10% height)3 s (2 µL direct injection)
Dynamic Range3 orders of magnitude (normal/low gain)
Mobile Phase Flow RateUp to 5 mL/min
Gas RequirementN₂ or inert gas at 50 psi
Gas Consumption≤2.5 L/min
InterfaceRS-232
Power120/240 V, 50/60 Hz, 600 W
Dimensions (W×D×H)25 × 45 × 29 cm
Weight15 kg
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