High Precision using Ion Chromatography (IC)

Ion chromatography (IC) uses a charged stationary phase to retain ionic analytes from the mobile phase utilizing ion-exchange principles. The retained molecules are then eluted out in sequence depending upon the strength of their electrostatic bonds with the stationary phase, to obtain characteristic chromatograms.

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High Precision using Ion Chromatography (IC)

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Precision-driven testing for dimensional accuracy and compliance

Overview
Scope, Applications, and Benefits
Test Process
Specifications
Instrumentation
Results and Deliverables

Overview

High-precision Ion Chromatography (IC) is a sophisticated form of liquid chromatography used to separate and quantify ionic and polar compounds in aqueous and complex matrices with high precision and accuracy. IC analysis is used to obtain highly accurate data on the concentrations of ions in aqueous solutions and matrices, and it is highly valued by chemists, researchers, and materials scientists for its ionic composition intelligence capabilities.

Scope, Applications, and Benefits

Scope

IC separates ionic species through an ion exchange chromatography column, followed by suppressed conductivity and/or other selective detectors for identification and quantitative determination of various anions and cations in a single analysis at trace concentration levels.

IC analysis evaluates:

Quantitative anion and cation concentration measurement in aqueous and complex sample matrices
Trace ionic contamination detection and identification in materials, surfaces, and process fluids
Inorganic anion analysis, including fluoride, chloride, nitrate, sulfate, and phosphate ions
Cation analysis, including sodium, potassium, calcium, magnesium, and ammonium species
Ionic cleanliness assessment of electronic assemblies, components, and manufacturing process fluids

Applications

Electronic assembly and PCB ionic cleanliness testing and contamination screening
Water and process fluid quality assessment for industrial and manufacturing applications
Pharmaceutical and chemical formulation ionic impurity and contamination analysis
Environmental water sample analysis for inorganic anion and cation quantification
Materials and surface ionic contamination investigation for failure analysis programs

Benefits

Provides high precision simultaneous anion and cation quantification in complex sample matrices
Identifies trace ionic contaminants in materials, surfaces, and process fluids
Supports material characterization and ionic contamination investigation programs
Reduces contamination risk by detecting ionic impurities early in the material qualification cycle

Test Process

Sample Preparation

Samples extracted, diluted, or filtered for IC injection and analysis.

Ion Chromatographic Separation

Ionic species separated across ion exchange column by charge affinity.

Conductivity Detection

Separated ionic species detected generating quantitative concentration response signals.

Data Analysis & Reporting

Chromatographic data processed to generate ionic identification and concentration results.

Technical Specifications

Parameter	Details
Applicable Samples	Aqueous solutions, process fluids, electronic assemblies, pharmaceuticals, environmental samples
Analytical Technique	Ion exchange chromatography with suppressed conductivity detection
Detection Capability	Trace anion and cation detection at parts-per-billion levels
Measured Parameters	Ionic species identity, retention time, and quantitative concentration
Measured Outputs	Ionic identification, concentration data, chromatograms, test compliance result

Instrumentation Used for Testing

Calibrated ion chromatography system with an ion exchange column separation
Suppressed conductivity detection system for anion and cation measurement
Ionic reference standards for compound identification and quantitative calibration
Sample preparation equipment for extraction, filtration, and dilution procedures
Specialist chromatographic data acquisition and processing software
Data reporting and ionic concentration profile visualization system

Results and Deliverables

IC chromatograms with ionic species identification and retention time data
Quantitative anion and cation concentration results for all analyzed samples
Trace ionic contamination identification and concentration data
Test compliance result assessed against the defined method and material specification criteria
IC analytical report

Why Choose Infinita Lab for High Precision using Ion Chromatography (IC)?

At the core of this breadth is our network of 2,000+ accredited labs in the USA, offering access to over 10,000 test types. From advanced metrology (SEM, TEM, RBS, XPS) to mechanical, dielectric, environmental, and standardized ASTM/ISO testing, we give clients unmatched flexibility, specialization, and scale. You’re not limited by geography, facility, or methodology—Infinita connects you to the right testing, every time.

Looking for a trusted partner to achieve your research goals? Schedule a meeting with us, send us a request, or call us at (888) 878-3090 to learn more about our services and how we can support you. Request a Quote

Frequently Asked Questions

It is an analytical technique that separates and quantifies ions or charged particles in a solution. This method widely analyzes anionic and cationic species in different procedure samples with high precision and accuracy.

It is capable of quantifying a large number of anions and cations, including inorganic ions such as Chloride, Nitrate, Sulfate, Lithium, Sodium, Potassium, and even some organic molecules like proteins and amino acids that exhibit pH-dependent ionization behavior.

IC is used for both anionic and cationic analytes but must be performed separately. Thus, in an anion-exchanger column, the anionic analyte molecules will be retained within the column as they exchange places with the anionic counter-ions in the stationary phase, and the cationic analyte molecules will exit the column with the mobile phase. Similarly, cationic analytes will be retained within a cation exchange column.

IC analyzes aqueous solutions, process liquids, surface extracts, electronic assemblies, pharmaceutical formulations, and environmental water samples, providing quantitative identification and concentration of ionic compounds across a broad range of liquids and extracted solid samples.

Types of detectors used in ion chromatography analysis are as follows. Conductivity Detectors, Electrochemical Detectors, Photodiode Array Detectors, Mass Spectrometry Detectors.