DW-CIC-D120 Ion Chromatography

The DW-CIC-D120 Ion Chromatography is designed for high-sensitivity determination of anions and cations, with detection capability down to the ppb level. 

It combines a 42 MPa high-pressure low-pulse pump, auto-range conductivity detection, self-regenerating electrolytic micro-membrane suppression, precise column temperature control, and a chemically inert PEEK flow path. This configuration supports stable, repeatable ion analysis across a wide range of sample matrices.

DW-CIC-D120 Brochure

Features of DW-CIC-D120 Ion Chromatography

  1. Auto-range conductivity detector: Greater detection range,better precise analysis.
  2. Built-in circulating 3D constant temperature technology: Temperature stability time is less than 30 mins, ensuring the accuracy and reliability of test data.
  3. Full-range series of ion chromatograph columns: High efficiency, large capacity of the columns for detecting ions of varied compositions.
  4. Self-Regenerating electrolytic micro-membrane Suppressor: High pressure resistance, small dead volume, highly responsive to signals.
  5. High accuracy: Able to detect anions and cations at the ppb level.
  6. Wide scope of application: Work across a variety of detectors, to expand the scope of applications

Applications of DW-CIC-D120 Ion Chromatography

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Environment

Atmospheric composition (dust, particulate matter, fog, acid gas), acid rain, water quality analysis

Appilication of DW-GC 1120 Food Safety

Food

Contaminated ingredients, additives, inherent ingredients, adulteration, production process monitoring

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Agriculture

Pesticide, fertilizer, soil, feed, food, plant analysismaterials in food

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Medicine

Blood, urine, infusion composition, clinical examination, human trace element analysis

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Biology

Protein separation and purification

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Pharmaceuticals

Analysis of plant medicinal materials, mineral medicinal ingredients, and preparation ingredients

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Materials

Metal materials, semiconductor materials, surface treatment, ultrapure water analysis

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Industry

Raw material analysis, product quality control, electrolytic plating solution analysis, papermaking

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Daily chemicals

Analysis of cosmetics, detergents, cleaning agents, raw materials, and product components

DW-CIC-D120 Ion Chromatography Display

  • DW CIC D120 3 1
  • DW CIC D120 4
  • DW CIC D120 1 1
  • DW CIC D120 2 1

FAQ

The most common issues are contamination of the guard column or analytical column frit, clogging of the in-line filter, or partial blockage of the pump head inlet filter due to particulates in the mobile phase.

Disassemble the individual units (such as the chromatographic column, guard column, and in-line filter) one by one to identify the specific component causing the blockage. For in-line filters, the filter element can be replaced directly; for check valves and filter heads, ultrasonic cleaning with ultrapure water and dilute nitric acid can be used.

First, ensure the eluent is thoroughly degassed. If the issue originates in the detector, flush it by injecting ultrapure water and methanol via a syringe to expel air bubbles. For regular fluctuations caused by the high-pressure pump, inspect and clean the check valves.

Peak tailing usually indicates column contamination or a spent guard column. Peak broadening may result from excessive system dead volume—for instance, due to overly long connecting tubing or mismatched internal diameters.

Recommendation: First, try replacing the guard column. If the problem persists, the column requires cleaning and regeneration. Additionally, inspect the tubing between the injection valve and the detector; PEEK tubing with the smallest possible internal diameter (e.g., 0.25 mm) should be used to minimize dead volume.

Use freshly prepared eluent and install a CO₂ trap on the eluent bottle to prevent CO₂ absorption. Additionally, ensure consistency in the quality of the ultrapure water and reagents used for each preparation.

When a chromatography column is not in use for a short period, it should be flushed according to the manufacturer’s instructions and then sealed and stored in the recommended solvent.For long-term storage, the column ends must be tightly capped to prevent the mobile phase from evaporating and causing the column bed to dry out.

Inverted peaks typically occur due to contamination by ions—identical to those in the sample—present in the eluent or the flow path system. Thoroughly clean the eluent bottle and prepare fresh eluent using higher-purity reagents and ultrapure water.

Use a guard column: Installing a guard column before the analytical column and replacing it regularly is the most effective method.

Rigorous sample pretreatment: All samples must be filtered through a 0.45 μm membrane or processed using online ultrafiltration/dialysis techniques prior to injection to remove particulates and impurities.

Proper usage: Avoid using eluents that fall outside the column’s pH range (typically 2–11) and ensure the use of high-purity reagents.

The system supports 2, 3, 4 and 5 mm i.d. columns, with up to a 250 mm analytical column plus 50 mm guard column.

The built-in 3D constant-temperature system has a stated stabilization time of less than 30 minutes.

Specifications of DW-CIC-D120 Ion Chromatography

Flow PathPEEK materialChemically inert, metal-free PEEK flow    paths, compatible with aqueous eluentsof pH 0– 14 and reversed-phase solvents
PumpTypeHigh-pressure and low-pulse two-pistontandem advection pump
MaximumPressure42MPa
Flow Rate Range0.001~9.999mL/min
Pressure Ripple≤0.5%
Flow Precision≤0.1%
Flow Accuracy≤0.1%
External Diameter of theTube1/16″
ValveContact Material of the RotorPEEK
Control ModeBy Stepper motor
Power Supply24V (DC)
ColumnHeaterOperating TemperatureRangeAmbient temperature + 5 to 60 ℃
Controlling TemperatureAccuracy±0.1℃
Temperature Stability≤0.1℃/h
Columns Supported2, 3, 4 and 5 mm i.d.Maximum length 250 mm analytical column with 50 mm guard column.
ConductivityDetectorTypeAuto-range conductivity detector
Cell Volume≤0.8μL
Detection Range0～45000μS/cm
Resolution≤0.0020nS/cm
Output Voltage-6000～+6000mv(adjustable)
Electronic Noise0.02nS
Baseline Noise≤0.001μS/cm
Baseline Drift≤0.01μS
Operating TemperatureRangeAmbient +5℃~60℃
Controlling TemperatureAccuracy±0.01℃
TemperatureCompensation1.7 %/℃
Maximum Pressure10.0MPa
Instrument Linearity≥0.999
Quantitative Repeatability≤0.5%
Qualitative Repeatability≤0.5%
Minimum DetectableConcentrationCl-≤0.0005ug/mL;Li+≤0.0005ug/mL;
 SuppressorTypeSelf-Regeneration electrolytic micro-membrane suppressor
Maximum Pressure6.0MPa
Non-SuppressedChromatographyYes/support
Void Volume<40μL (4mm)<15μL (2mm)
Power Supply150W
External Size(L*W*H*)350*470*495(mm)
Net Weight(KG)26
Gross Weight(KG)32
  • DW CIC D100
    9 vials Autosampler
  • DW CIC D100 2
    16 vials Autosampler
  • DW CIC D100 4
    18 vials Autosampler
  • DW CIC D100 1
    Ampere Detector
  • DW CIC D100 3
    Ampere Detector
  • DW CIC D100 5
    UV Detector

Why Choose Us?

One-Station Shopping

“Multiple suppliers” have always been an issue in the procurement process. Drawell as a one-stop laboratory equipment and scientific instruments supplier, can perfectly solve this problem. In addition to manufacturing our own equipment, we also represent other laboratory equipment. Our product lines are rich and diverse at competitive prices. Provide one-stop service to customers.

Customer-centric Services

User Training – Training by Drawell skilled engineers about installation, debug tests, technical services, etc. It can happen in our factory in China, or at the site in the customers’ country. Cost depends on where and when the training happens.

Online Support

To discuss the problem and get it resolved, online chats, real-time video calls, and remote guidance. For the after-sales stage, our online technical guidance is free and ready forever.

100% Quality Guarantee Policy

1 year free official warranty, including repairing quality-damaged parts, and offering replacements of selected parts (shipping cost is extra). 5% of the product price is charged for extending the warranty before the end of the official warranty.

Customer Service of DW-CIC-D120 Ion Chromatograph

DW CIC D120 Ion Chromatography

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