Zhongxi is a complete laboratory for analysis and testing, also an audited contract laboratory.We can provide a wide range of chemical analysis and material testing services to a diverse international customer base.Our expertise and years of experience enable us to choose the right analytical methods and generate the accurate data needed to solve your toughest problems.

We identify the unknown substances that can threaten your product and manufacturing process and help determine their source.

Our experts specialise in the non-routine testing of unknown materials and substances. Our forensic approach enables us to assist our clients and add-value to different stages of their enquiry/investigation.

Zhongxi provides analytical support for the analysis of unknown contaminants in various matrices and for various industries. Using the latest High-Resolution Accurate Mass instruments following the careful preparation of samples and controls, we can detect and identify the elemental composition of the unknown. Advanced software systems enable us to provide key targets and predict degradation and metabolic pathways to formation and potential end products.

Contaminants in Process Quality Control

Unknown substances such as impurities or adulterants can not only affect your product, but may pose potential health risks. Analysis of unknown substances found during the quality control process must be identified and their source located so corrective action can be determined.

Our expertise

Batch release testing

Impurity profiling

Method development troubleshooting

Leachables and extractables

Quality assurance

Product tainting

Substance identification

Experiment flow

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How Do We Approach an Unknown Substance

Substances can be differentiated from one another by examining their physical and chemical properties. Our first step is to gather as much information as possible as to the source and history of the substance and the reasons for the analysis. This gives us a basis for not only determining what it might be, but also what it might not be. We then consider the physical properties which do not change during the analysis and then the chemical properties which react when analyzed. Whether you need to identify an unknown substance, provide confirmation of a substance, determine source, compare properties or uncover a counterfeit product, our experts have the combination of in-depth knowledge and preferred instrumentation to provide the answers you need. Some methods and technologies we use include:

Gas Chromatography (GC)

Gas Chromatography Mass Spectroscopy (GC-MS)

Ion Chromatography (IC)

High Performance Liquid Chromatography (HPLC)

Dispersive Raman Spectroscopy

Fourier Transfer Infrared Spectroscopy (FTIR)

Crystallography: X-Ray Fluorescence (XRF) and X-Ray Diffraction (XRD)

Thermogravimetric Analysis / Differential Scanning Calorimetry

For more information about our services or technical advice, please fill out this form and we will get back to you as soon as possible.Our professional engineer will reply to you immediately.

Tags: unknown component