Quaternary HPLC System - Liquid Chromatograph - 4-Solvent Gradient - 1024-Diode DAD

The Master Science Quaternary HPLC System is a liquid chromatograph designed for laboratories that need steady flow, clean injections and reliable gradient performance every day. Its four-channel pump mixes solvents at high frequency, which keeps pulsation and baseline noise low without relying on a large mixing chamber.

The autosampler, column oven and detector are matched to the pump, so the complete system delivers reproducible retention times for assay, impurity and method development work.

Technical Specifications

Key configuration details of the Master Science Quaternary HPLC System are listed below.

• Brand: Master Science
• Model Number: MSHPLC-6000SWISS
• SKU: MSHPLC-6000SWISS
• Pump Type: Quaternary (four-solvent) gradient pump
• Gradient Mixing: HFM high-frequency proportional valve switching
• Plunger Drive: Special curve cam with real-time pressure feedback
• Check Valves: Two-stage cascade inlet and outlet valve cores
• Degasser: Built-in
• Pump Maintenance: Seals, check valves and plunger replaceable from the front
• Injection Method: Direct injection with high-precision drive unit (FTN)
• Needle Wash: External needle wall wash; wash solution not reused
• Sample Cooling: Optional Peltier-cooled sample tray
• Column Oven: Peltier heating and cooling with mobile-phase preheating
• Oven Air Flow: Continuous internal air circulation
• Optional Valves: 3-column switching valve; 2-position 6-port valve
• Detector Options: UV detector or DAD
• DAD Array: 1024 diodes with mechanically ruled grating

Key Benefits

• Lower baseline noise: high-frequency solvent mixing reduces mixing bubbles and pulsation, giving cleaner baselines for low-level peaks.
• Reproducible retention times: curve cam drive and real-time pressure control keep flow constant across long gradient runs.
• Less sample carryover: direct injection and fresh needle wash solution help keep results free of ghost peaks.
• Stable column temperature: the Master Science Quaternary HPLC System uses a Peltier oven that can both heat and cool, with mobile-phase preheating for sharp, symmetrical peaks.
• Quick routine maintenance: pump wear parts are changed from the front panel without moving the stack.

For volatile compounds that are better suited to gas phase separation, see the Master Science gas chromatograph with FID and TCD detectors.

Product Features

Pump System

• Four-solvent gradient with HFM high-frequency mixing
• Small delay volume without a large mixer
• Special curve cam and real-time motor speed control
• Cascade check valve cores for steady delivery

Autosampler

• Direct injection for accurate, repeatable volumes
• Outer needle wash to reduce carryover
• Optional Peltier sample cooling for temperature-sensitive samples
• Rack design that limits condensation inside the unit

Column Oven and Valves

• Peltier heating and cooling for a wide temperature range
• Mobile-phase preheating before the column
• Optional three-column switching valve for method screening
• Optional 6-port valve for online clean-up, enrichment and 2D LC

Detectors

• High-sensitivity UV detector for trace analysis
• DAD with 1024-element array for spectral and purity checks

Applications

The Master Science Quaternary HPLC System is used for:

• Pharmaceutical assay and related-substance testing
• Food additive, preservative and contaminant analysis
• Environmental analysis of phenols and other organic pollutants
• Chemical product purity and quality control
• Method development and column screening in research labs

Optional Accessories

• Peltier-cooled sample tray
• Three-column switching valve
• Two-position six-port valve
• UV detector or diode array detector

Common Laboratory Problems and How This HPLC Helps

Frequent problems in HPLC labs and how the Master Science Quaternary HPLC System addresses them:

• Noisy baselines in gradient runs: high-frequency mixing and low pulsation keep the baseline quiet.
• Retention time drift: pressure feedback and a Peltier column oven hold conditions steady.
• Carryover between samples: direct injection and single-use wash solution reduce residue.
• Degradation of sensitive samples: the optional cooled sampler keeps vials at a set temperature.
• Long downtime for pump service: front-access seals and valves shorten maintenance.