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The Quaternary Low-Pressure Gradient HPLC System is engineered for laboratories demanding precision, reliability, and automation in high-performance liquid chromatography. Featuring a robust pump capable of up to 9000 psi (62 MPa), ultra-fine flow control from 0.001 to 10.000 mL/min, and integrated Diode Array Detector (DAD) with full UV-Vis spectral coverage, this system delivers unmatched gradient accuracy (±0.5%) and repeatability (≤0.1%). Equipped with a thermostatted column compartment (5°C

Quaternary Low-Pressure Gradient HPLC Pump System

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Product Detail

1. Quaternary Low-Pressure Gradient Pump
  • Maximum Pressure Resistance: 9000 psi (62 MPa)
  • Flow Rate Range: 0.001 – 10.000 mL/min (adjustable in 0.001 mL/min increments)
  • Flow Rate Accuracy: ≤0.06% RSD (per ASTM standards), ±0.2% absolute
  • Pressure Pulsation: ≤1% for stable baseline and sensitive detection
  • Gradient Accuracy: ±0.5%
  • Gradient Repeatability: ≤0.1% — ensuring run-to-run consistency
  • Plunger On-Line Cleaning: Standard feature with high/medium/low speed options to extend seal life and reduce maintenance
  • Degassing System: Four-channel integrated degasser, 480 µL per channel, minimizing bubble formation and improving baseline stability


2. Diode Array Detector (DAD)

  • Diode Array: 1024 pixels for high-resolution spectral acquisition
  • Wavelength Range: 190 – 640 nm (covers full UV and visible range)
  • Light Source: Long-life deuterium lamp
  • Spectral Resolution: 0.6 nm/pixel
  • Spectral Bandwidth: 4.8 nm
  • Wavelength Accuracy: ±1 nm (calibrated), with repeatability of 0.1 nm
Enables peak purity analysis, spectral library matching, and multi-wavelength quantification in a single run


3. Column Temperature Chamber

  • Temperature Control Range: Room temperature +5°C to 70°C
  • Temperature Accuracy: ±1.0°C
  • Temperature Stability: ±0.1°C — critical for retention time reproducibility
  • Column Capacity: Accommodates one 250 mm analytical column (plus optional 10 mm guard column)
  • Uniform heating design minimizes thermal gradients across the column


4. System Advantages

  • Ultra-High Precision: Sub-microliter flow control ideal for micro-LC and method development
  • Exceptional Gradient Reproducibility: ≤0.1% RSD ensures reliable quantitative results
  • Integrated Design: Pump, degasser, DAD, and column oven in a compact footprint
  • Low Maintenance: On-line plunger wash extends component life
  • Compliance Ready: Meets ASTM and pharmacopeial requirements for analytical instrumentation


5. Ideal Applications

  • Pharmaceutical QC/QA and R&D
  • Environmental contaminant analysis
  • Food and beverage safety testing
  • Academic and clinical research
  • Method validation and transfer

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Product Detail
1. Quaternary Low-Pressure Gradient Pump
  • Maximum Pressure Resistance: 9000 psi (62 MPa)
  • Flow Rate Range: 0.001 – 10.000 mL/min (adjustable in 0.001 mL/min increments)
  • Flow Rate Accuracy: ≤0.06% RSD (per ASTM standards), ±0.2% absolute
  • Pressure Pulsation: ≤1% for stable baseline and sensitive detection
  • Gradient Accuracy: ±0.5%
  • Gradient Repeatability: ≤0.1% — ensuring run-to-run consistency
  • Plunger On-Line Cleaning: Standard feature with high/medium/low speed options to extend seal life and reduce maintenance
  • Degassing System: Four-channel integrated degasser, 480 µL per channel, minimizing bubble formation and improving baseline stability


2. Diode Array Detector (DAD)

  • Diode Array: 1024 pixels for high-resolution spectral acquisition
  • Wavelength Range: 190 – 640 nm (covers full UV and visible range)
  • Light Source: Long-life deuterium lamp
  • Spectral Resolution: 0.6 nm/pixel
  • Spectral Bandwidth: 4.8 nm
  • Wavelength Accuracy: ±1 nm (calibrated), with repeatability of 0.1 nm
Enables peak purity analysis, spectral library matching, and multi-wavelength quantification in a single run


3. Column Temperature Chamber

  • Temperature Control Range: Room temperature +5°C to 70°C
  • Temperature Accuracy: ±1.0°C
  • Temperature Stability: ±0.1°C — critical for retention time reproducibility
  • Column Capacity: Accommodates one 250 mm analytical column (plus optional 10 mm guard column)
  • Uniform heating design minimizes thermal gradients across the column


4. System Advantages

  • Ultra-High Precision: Sub-microliter flow control ideal for micro-LC and method development
  • Exceptional Gradient Reproducibility: ≤0.1% RSD ensures reliable quantitative results
  • Integrated Design: Pump, degasser, DAD, and column oven in a compact footprint
  • Low Maintenance: On-line plunger wash extends component life
  • Compliance Ready: Meets ASTM and pharmacopeial requirements for analytical instrumentation


5. Ideal Applications

  • Pharmaceutical QC/QA and R&D
  • Environmental contaminant analysis
  • Food and beverage safety testing
  • Academic and clinical research
  • Method validation and transfer
Quaternary Low-Pressure Gradient HPLC Pump System
The Quaternary Low-Pressure Gradient HPLC System is engineered for laboratories demanding precision, reliability, and automation in high-performance liquid chromatography. Featuring a robust pump capable of up to 9000 psi (62 MPa), ultra-fine flow control from 0.001 to 10.000 mL/min, and integrated Diode Array Detector (DAD) with full UV-Vis spectral coverage, this system delivers unmatched gradient accuracy (±0.5%) and repeatability (≤0.1%). Equipped with a thermostatted column compartment (5°C
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