Mass Spectrometers

Buy new, refurbished, and used mass spectrometers from mLab Supply for pharmaceutical, environmental, food safety, and academic research labs. Source LC-MS, GC-MS, triple quadrupole, and high-resolution mass spectrometry (HRMS) systems from leading manufacturers including Thermo Scientific, Waters, Agilent, and SCIEX. Whether you need a targeted quantitation platform or a high-resolution instrument for untargeted metabolomics and proteomics, mLab Supply connects buyers with quality systems across all major configurations. Net 30 available for qualified institutions. Request a quote today.

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<h2>About Mass Spectrometers</h2>
<p>Mass spectrometry (MS) is an analytical technique used to identify, characterize, and quantify chemical and biological compounds by measuring the mass-to-charge ratio of ionized molecules and their fragments. Mass spectrometers ionize sample molecules, separate the resulting ions according to their mass-to-charge ratio, and detect them to produce a mass spectrum. This spectrum serves as a molecular fingerprint, enabling researchers and analysts to determine molecular weight, confirm chemical structure, elucidate fragmentation pathways, and quantify target analytes at trace levels across complex matrices. Mass spectrometry is a foundational tool in pharmaceutical research, environmental monitoring, food safety testing, clinical bioanalysis, proteomics, and metabolomics.</p>

<h2>Types of Mass Spectrometers</h2>
<p>Mass spectrometers are available in a range of configurations, each suited to different analytical requirements:</p>
<ul>
<li><strong>Single Quadrupole:</strong> A compact, cost-effective mass analyzer commonly used for routine screening, targeted compound confirmation, and general LC-MS or GC-MS workflows.</li>
<li><strong>Triple Quadrupole (QQQ):</strong> Three quadrupole mass analyzers arranged in sequence, enabling selected reaction monitoring (SRM) and multiple reaction monitoring (MRM) for sensitive, targeted quantitation of small molecules.</li>
<li><strong>Hybrid Quadrupole Ion Trap (QTRAP):</strong> Combines triple quadrupole and linear ion trap capabilities, supporting both quantitative MRM workflows and enhanced product ion scanning in a single platform.</li>
<li><strong>Orbitrap and High-Resolution Mass Spectrometry (HRMS):</strong> High-resolution, accurate-mass instruments capable of sub-ppm mass accuracy. Used for untargeted discovery workflows, metabolomics, proteomics, and complex mixture characterization.</li>
<li><strong>LC-MS Systems:</strong> Mass spectrometers configured for use with liquid chromatography front-ends, separating analytes in solution prior to ionization and detection.</li>
<li><strong>GC-MS Systems:</strong> Mass spectrometers configured for use with gas chromatography, suited to volatile and semi-volatile compounds amenable to gas-phase separation.</li>
</ul>

<h2>LC-MS Systems</h2>
<p>Liquid chromatography-mass spectrometry (LC-MS) couples liquid chromatographic separation with mass spectrometric detection, enabling analysis of polar, thermally labile, and large-molecule analytes that are not suitable for gas-phase separation. LC-MS platforms are widely used in pharmaceutical drug discovery, pharmacokinetic studies, bioanalytical method development, clinical research, food contaminant analysis, and environmental testing. Common ionization sources used in LC-MS include electrospray ionization (ESI) and atmospheric pressure chemical ionization (APCI). Mass spectrometer listings on mLab Supply may or may not include a paired LC system; buyers should confirm the configuration of each specific instrument prior to purchase.</p>

<h2>GC-MS Systems</h2>
<p>Gas chromatography-mass spectrometry (GC-MS) is well established for the identification and quantification of volatile and semi-volatile organic compounds. GC-MS systems separate compounds through a gas chromatographic column prior to ionization, typically using electron ionization (EI) or chemical ionization (CI). This technique is widely applied in environmental monitoring, food and flavor analysis, forensic toxicology, petroleum and petrochemical analysis, and residual solvent testing. GC-MS instruments range from single quadrupole benchtop systems used in routine screening laboratories to triple quadrupole GC-MS/MS platforms for high-sensitivity targeted quantitation.</p>

<h2>Triple Quadrupole Mass Spectrometers</h2>
<p>Triple quadrupole (QQQ) mass spectrometers are the instrument of choice for targeted quantitative analytical workflows requiring high sensitivity and selectivity. Operating in multiple reaction monitoring (MRM) mode, a triple quadrupole selects a precursor ion in the first quadrupole, fragments it in a collision cell, and detects a specific product ion in the third quadrupole. This targeted approach minimizes background interference and supports robust, reproducible quantitation across complex biological and environmental matrices. Triple quadrupole platforms are used extensively in pharmaceutical bioanalysis, clinical research, food safety residue analysis, and environmental trace contaminant monitoring. Performance characteristics vary across instrument generations and configurations.</p>

<h2>High-Resolution Mass Spectrometry</h2>
<p>High-resolution mass spectrometry (HRMS) refers to instruments capable of measuring ion masses with sufficient resolution and accuracy to assign molecular formulas based on exact mass. Orbitrap-based platforms, developed by Thermo Scientific, are among the most widely adopted HRMS technologies, offering high resolving power and mass accuracy suitable for untargeted metabolomics, proteomics, lipidomics, and complex mixture characterization. HRMS instruments can be coupled to both liquid and gas chromatography front-ends. They are increasingly used in pharmaceutical impurity profiling, natural products research, environmental contaminant identification, and food authenticity testing. Acquisition modes include full-scan, data-dependent acquisition (DDA), and data-independent acquisition (DIA), depending on the workflow and instrument platform.</p>

<h2>How to Choose a Mass Spectrometer</h2>
<p>Selecting the right mass spectrometer for your laboratory involves evaluating several factors:</p>
<ul>
<li><strong>Application:</strong> Define whether your primary need is targeted quantitation, untargeted discovery, structural elucidation, or routine screening. Different applications favor different mass analyzer types.</li>
<li><strong>Mass Analyzer Type:</strong> Match the analyzer to the workflow — triple quadrupole for MRM quantitation, Orbitrap or Q-TOF for accurate-mass discovery, single quadrupole for routine screening.</li>
<li><strong>Ionization Requirements:</strong> Confirm the ionization source configuration (ESI, APCI, EI, CI, MALDI) is appropriate for your sample types and matrices.</li>
<li><strong>Front-End Chromatography:</strong> Determine whether you need an LC-MS, GC-MS, or standalone mass spectrometer, and confirm compatibility with your existing chromatography equipment.</li>
<li><strong>Throughput:</strong> Consider acquisition speed, cycle time, and sample throughput requirements when evaluating instrument generations and configurations.</li>
<li><strong>Software:</strong> Confirm that instrument control, data acquisition, and data processing software is included, compatible with your operating environment, and appropriately licensed.</li>
<li><strong>Laboratory Infrastructure:</strong> Mass spectrometers require dedicated electrical supply, vacuum pumps, inert gas supplies (nitrogen, helium, argon), and in some cases specialized ventilation. Confirm your laboratory can support the instrument.</li>
<li><strong>Configuration and Included Components:</strong> Verify which ion sources, pumps, interfaces, columns, and accessories are included with each specific instrument listing.</li>
<li><strong>Serviceability:</strong> Consider instrument age, availability of service support, spare parts, and your team's in-house maintenance capabilities.</li>
<li><strong>Condition:</strong> Evaluate whether a new, refurbished, or used instrument best matches your budget, timeline, and performance requirements.</li>
</ul>

<p>mLab Supply also sources <a href="/collections/hplc-systems">HPLC Systems</a> and <a href="/collections/uhplc-systems">UHPLC Systems</a> for laboratories building or expanding LC-MS workflows. Browse related chromatography equipment to find compatible front-end separation systems.</p>

<h2>Used vs. Refurbished Mass Spectrometers</h2>
<p>Used and refurbished mass spectrometers can represent significant cost savings relative to new instruments, making high-performance analytical platforms accessible to research groups, contract laboratories, and growing analytical teams. When evaluating a pre-owned mass spectrometer, consider the following:</p>
<ul>
<li><strong>Instrument Condition:</strong> Assess the overall condition, including the state of the vacuum system, ion source, and ion optics.</li>
<li><strong>Configuration:</strong> Confirm the exact hardware configuration — ionization sources, inlet interfaces, detector type, and any installed options.</li>
<li><strong>Vacuum System:</strong> The vacuum system is a critical component. Confirm the condition of turbomolecular pumps and roughing pumps, as pump replacement can be a significant cost.</li>
<li><strong>Ion Sources:</strong> Verify which ion sources are included and their condition, as ion source components are consumable and subject to wear.</li>
<li><strong>Software and Computer:</strong> Confirm whether instrument control software, data system, and a compatible computer are included with the instrument.</li>
<li><strong>Service History:</strong> Where available, review maintenance records and prior service documentation.</li>
<li><strong>Installation Requirements:</strong> Mass spectrometers typically require professional installation and qualification. Confirm what installation support is available and what site preparation is required.</li>
</ul>
<p>mLab Supply sources used, refurbished, and surplus mass spectrometers. Instrument conditions and included components vary by listing. Review each listing carefully and contact us to request detailed configuration information prior to purchase.</p>

<h2>Mass Spectrometer Manufacturers</h2>
<p>mLab Supply sources mass spectrometers from leading manufacturers across all major platform families. Common manufacturers represented include Thermo Scientific, Waters, Agilent Technologies, and SCIEX. Thermo Scientific instruments include the TSQ triple quadrupole family and Orbitrap-based platforms. Waters is known for its Xevo triple quadrupole and SYNAPT high-resolution systems. Agilent Technologies offers triple quadrupole LC-MS/MS and GC-MS platforms across multiple generations. SCIEX (formerly AB SCIEX) is widely recognized for its QTRAP hybrid instruments and triple quadrupole platforms used extensively in bioanalytical and clinical research settings. Applications served include pharmaceutical research and development, bioanalysis and pharmacokinetic studies, environmental contaminant monitoring, food safety and residue testing, proteomics and metabolomics, forensic toxicology, and industrial analytical workflows.</p>

<h2>Frequently Asked Questions</h2>

<dl>
<dt>What is the difference between LC-MS and GC-MS?</dt>
<dd>LC-MS (liquid chromatography-mass spectrometry) is used for polar, thermally labile, and high-molecular-weight compounds that are not volatile enough for gas-phase separation. GC-MS (gas chromatography-mass spectrometry) is suited to volatile and semi-volatile organic compounds amenable to gas chromatographic separation. The choice between the two depends on the chemical nature of the analytes and the application.</dd>

<dt>What is a triple quadrupole mass spectrometer used for?</dt>
<dd>Triple quadrupole mass spectrometers are primarily used for targeted quantitative analysis using multiple reaction monitoring (MRM) or selected reaction monitoring (SRM). They are widely used in pharmaceutical bioanalysis, environmental testing, food safety residue analysis, and clinical research where high sensitivity and selectivity are required for specific target analytes.</dd>

<dt>What is high-resolution mass spectrometry?</dt>
<dd>High-resolution mass spectrometry (HRMS) refers to instruments capable of measuring ion masses with high accuracy, often enabling assignment of molecular formulas based on exact mass. HRMS platforms are used for untargeted discovery workflows, metabolomics, proteomics, impurity profiling, and applications where full-scan accurate-mass data is required rather than targeted MRM acquisition.</dd>

<dt>Can I buy used or refurbished mass spectrometers?</dt>
<dd>Yes. mLab Supply sources used, refurbished, and surplus mass spectrometers across multiple manufacturers and platform types. Instrument condition, configuration, and included components vary by listing. Contact us for detailed information on any specific instrument.</dd>

<dt>What should I check before buying a used mass spectrometer?</dt>
<dd>Key considerations include instrument condition, vacuum system integrity, ion source configuration and condition, included pumps, software and data system, computer compatibility, service history where available, and installation requirements. Confirm which components are included with each specific listing before purchase.</dd>

<dt>Does a used mass spectrometer include pumps, software, and a computer?</dt>
<dd>Included components vary by listing. Some instruments are offered with turbomolecular pumps, roughing pumps, ion sources, and a complete data system; others are offered as standalone instruments. Review each listing description carefully or contact mLab Supply to confirm what is included before purchasing.</dd>

<dt>Can mLab Supply source a specific mass spectrometer model?</dt>
<dd>mLab Supply can often source specific instrument models and configurations not currently listed. Submit a request through our <a href="/pages/request-a-quote">Request a Quote</a> page and include your preferred manufacturer, model, and configuration requirements.</dd>

<dt>How do I request a quote for a mass spectrometer?</dt>
<dd>Visit our <a href="/pages/request-a-quote">Request a Quote</a> page and provide details about the instrument you are looking for, including manufacturer, model, configuration, and any specific requirements. Our team will follow up to discuss sourcing options, pricing, and availability.</dd>
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