Ion Chromatograph

I. Instrument Introduction

The standard configuration of this system consists of an eluent bottle (no external gas protection required), a high-pressure PEEK chromatographic pump, an eluent degassing device, a sample degassing device, an intelligent online eluent generation module (optional), a built-in electric (or automatic) injection system, a built-in heat-radiation column thermostat, a high-capacity chromatographic column and guard column, an automatically regenerated anti-dry-cracking membrane suppressor, a constant-temperature conductivity detector and intelligent control software. The entire flow path system is made of PEEK material to improve the overall stability and reliability of the instrument. The main unit panel adopts a dazzling visible light design so that the operating status of the instrument can be remotely inspected, realizing human-machine dialogue and making the operation of the instrument in the laboratory more humanized and intelligent.

The system can perform quantitative analysis of anions, cations, organic acids and saccharides in various samples. According to the basic requirements of JJG 823-2014 "Verification regulation for ion chromatographs" combined with the actual needs of customers' environmental monitoring work, the ion chromatograph should meet the following key technical indicators.

II. High-Pressure Chromatographic Pump System

Adopts high-performance, low-flow-pulsation dual-plunger series solution delivery technology, with a PEEK pump head and PEEK tubing, suitable for eluents with pH 0~14 and reversed-phase organic solvents. Low flow pulsation: electronic damping control (Electrical Dump Control) technology effectively controls flow pulsation and ensures the lowest baseline noise. High flow accuracy and repeatability: multi-point flow calibration curves ensure flow precision over the full flow range. Seal life: a floating plunger design ensures the service life of the high-pressure seal. Automatic plunger cleaning: an optional automatic mechanism can clean the plunger and the back of the plunger seal, preventing crystallization of high-salt buffer solutions from shortening the seal life.

III. Online Degassing Device

Independent online eluent degassing channel.

Independent online sample degassing channel.

Organic solvent compatibility: 0-100%.

IV. Built-in Electric Injection Valve

Built-in electric injection valve; after injection it automatically triggers operation with no manual lever switching.

Compatible with built-in quantitative loops: 0.25, 1 µL.

Compatible with external quantitative loops: 1.5, 5, 10, 20, 50, 100, 250, 1000 µL.

V. Automatic Injection System

Suction-type injection mode.

Full panoramic curved viewing window with 4500 K soft-color lighting, clear and fully visible.

Powerful triple-detection functions: empty-bottle detection, needle-top detection and needle-clogging detection.

Reliable integrated servo stepper motor drive, ultra-quiet design, encoder remotely controllable.

The sampling needle is cleaned inside and outside simultaneously by the needle-washing liquid.

Mature core control software enabling three injection modes: lossless injection, partial injection and full-loop injection.

Comprehensive operation fault-tolerance protection: automatic shutdown protection for abnormal conditions such as lost motion steps, lost origin and needle-top.

Effective sample positions: 108; sample vial specification: 5 mL.

VI. Heat-Radiation Built-in Column Thermostat System

Adopts an electric heating mode with three-dimensional heating, enabling high-efficiency heating and low-power constant temperature under uninterrupted current conditions, achieving full-domain constant temperature in the chamber and maintaining a constant temperature within 20 minutes after startup, with no waiting required for injection.

VII. High-Capacity Chromatographic Column and Guard Column

A wide range of specifications and categories of high-efficiency, high-capacity anion and cation separation columns and guard columns are available, capable of satisfying various mobile phase systems in anion and cation systems and meeting the chromatographic column requirements specified in various standard testing methods.

VIII. Anti-Dry-Cracking Automatically Regenerated Membrane Suppressor

Electrolytically regenerated micro-membrane suppressor, using a porous platinum electrode and a customized anti-dry-cracking membrane design, with no need for external sulfuric acid for alternating regeneration. Self-sealing and anti-dry, the unique assembly structure is not afraid of resin and membrane dehydration and drying, maintaining original performance after rehydration. High pressure resistance, no leakage at up to 6 MPa, normal operation at 2 MPa, effectively extending the service life of the suppressor.

IX. Eluent Generator

When preparing eluent manually, weighing and constant-volume errors cause a certain error in each prepared eluent, the magnitude of which is determined by the operator's actual preparation process, resulting in slight differences in background conductivity each time the eluent is replaced, and there are also errors in retention time. With an eluent generator, the generated concentration can be set via software, ensuring a consistent concentration at each startup and significantly optimizing retention time and quantitative repeatability. The water-only system can realize high-pressure gradient elution.

X. Constant-Temperature Digital Conductivity Detector

XI. Intelligent Ion Chromatography Analysis System

24-bit high-precision, high-sensitivity analog-to-digital conversion.

Dedicated ion chromatography workstation, transmitting digital signals with a computer via a high-performance USB connection.

Database-based design: all generated data is stored in a database, with an automatic data backup mechanism for permanent storage and greater data security; sample information can be custom-searched for quick data query.

Chromatography workstation software with functions such as instrument monitoring, data acquisition, spectrum processing, quantitative calculation, report processing and printing; the instrument can be directly controlled by a computer, supporting Windows XP/Win7 and other operating systems, with digital signal transmission via USB.

One software can control multiple instruments and can simultaneously control multiple detectors of several ion chromatographs for simultaneous acquisition.

Powerful data processing functions; efficient batch processing allows instrument control, autosampler sequence acquisition, automatic integration correction and report output to be generated directly.

Powerful post-processing functions including spectrum comparison, recalibration, data input/output and three-dimensional spectrum processing.

XII. Quality and After-Sales Service Guarantee

The free warranty period of the product is 36 months.

Free on-site training is provided, with a training period of no less than 3 days.

If a quality problem occurs with the instrument and on-site support is required, the site shall be reached within 48 hours of the request.

XIII. Typical Applications and Standards