Laboratory anion and cation chromatography instrumentThe core components are independently developed and have controllable intellectual property rights by Shandong Hongwei Quantum Technology Co., Ltd. Adopting an integrated design, it integrates the ion chromatography host, eluent generator, industrial computer, and chromatography workstation into one, with a compact structure and the shortest flow path, which greatly improves the peak expansion caused by the flow path. Integrated constant temperature box: The chromatographic column, suppressor, conductivity cell, and amplification circuit are all in the same constant temperature system, which improves the temperature drift and baseline noise of the conductivity detector. Built in multiple leak and water shortage alarms for safety monitoring. The various components controlled by PLC are unified into a centralized software control system on the computer display screen, which is easy to operate and controlled by the mouse.
2、 Main configuration and technical parameters:
1. High pressure infusion pump:The microprocessor controlled dual plunger reciprocating pump adopts a good intelligent control algorithm, which can reduce the flow pulsation of the pump to a low level.
1.1 Material: Inlaid PEEK material without damping pump head, PEEK pipeline, suitable for pH 0-14 rinsing solution and reverse phase organic solvents.
1.2 Flow range: 0.001~9.999ml/min, incremental 0.001ml/min.
1.3. Flow setting value wucha: ≤ 0.1%
1.4. Traffic stability: ≤ 0.1%
1.5. Working pressure: 35MPa
1.6. Overpressure protection: If the working pressure exceeds or falls below the set upper or lower limit, the pump will automatically shut down and sound an alarm.
2. Conductivity detector:
2.1 Principle: Five pole conductivity detector
2.2. Electrode material: passivated 316L stainless steel
2.3. Baseline noise: ≤ 0.002 μ S/cm
2.4. Baseline drift: ≤ 0.008 μ S/cm · 30min
2.5, minimum detectable concentration: ≤ 0.0005ug/mL (calculated as Cl -)
2.6, Instrument linearity: ≥ 0.9995
2.7, Quantitative repeatability: ≤ 0.1% (calculated as Cl -)
2.8, Qualitative repeatability: ≤ 0.1% (calculated as Cl -)
2.9, Measurement range: 0~50000us/cm
2.10, Resolution: ≤ 0.0020n/s/cm
2.11, detection pool volume: 0.8uL
2.12. Operating pressure: ≤ 10Mpa.
2.13, Conductivity detection range: 0-50000uS, adjustable in 10 levels.