Exact mass and isotopic pattern
ESI, APPI, APCI, or MALDI introduction
Material Analysis · Chromatography & Diagnostics
Characterise exact mass and isotopic pattern, molecular formula and heteroatom class, and complex-mixture composition and double-bond-equivalent distributions using a scope agreed around your sample and decision.
Why this service
Fourier Transform Ion Cyclotron Resonance Mass Spectrometry is selected when the project needs defensible information on exact mass and isotopic pattern, molecular formula and heteroatom class, or…
ESI, APPI, APCI, or MALDI introduction
positive/negative polarity
MS/MS or ion-mobility where configured
Choose the scope
The method, preparation route and reporting depth depend on what you need to decide.
exact mass and isotopic pattern
molecular formula and heteroatom class
complex-mixture composition and double-bond-equivalent distributions
Common outputs
Fields, conditions, processing and file formats are confirmed before work begins.
Ultrahigh-resolution mass spectrum reported with the agreed units, sample reference and measurement conditions.
Assigned molecular-formula table supplied in a labelled format suitable for direct sample or condition comparison.
Class, mass-defect, and compositional plots provided with the processing basis and quality checks agreed during technical review.
Processed spectra included when selected in the confirmed reporting scope.
Sample requirements
Provide representative, clearly labelled samples and identify the decision, feature or comparison that matters.
| Suitable sample | Submission requirement | Planning note |
|---|---|---|
| Liquid / solution | Provide a sealed, compatible container labelled with composition, concentration and solvent. | Declare volatility, corrosivity, suspended solids and any storage or temperature requirement. |
Objective: state the decision, comparison or acceptance criterion the work must support.
Handling and access: declare hazards, instability, confidentiality, file constraints or special logistics before dispatch or transfer.
Questions and answers
Short answers to issues that can change preparation, scope, timing or interpretation.
Provide liquid / solution as applicable. Exact quantity, dimensions and preparation are confirmed during technical review.
Choose the mode around the decision you need to make. For exact mass and isotopic pattern, start with ESI, APPI, APCI, or MALDI introduction; add positive/negative polarity when comparison or quantification is required.
Typical turnaround is 7 working days after sample acceptance and method confirmation.
Ionisation bias means absence of a peak does not prove absence of a compound. Formula assignment is not a complete structural identification.
Configure the service