Thermal Cyclers

Buy used and refurbished thermal cyclers from mLab Supply. We source conventional PCR machines in 96-well, gradient, and multi-block configurations from Applied Biosystems, Bio-Rad, Eppendorf, and Thermo Scientific for research, academic, and institutional laboratories. Submit a quote request for current availability, configuration details, and pricing.

<h2>How to Choose a Thermal Cycler</h2>
<p>Selecting a thermal cycler for your laboratory depends on several practical factors beyond basic PCR compatibility. Understanding these considerations before sourcing a used or refurbished unit helps ensure the instrument fits your workflow without requiring costly modifications.</p>
<ul>
<li><strong>Block format:</strong> The 96-well format is the standard for most molecular biology workflows. 384-well blocks support higher throughput with smaller reaction volumes. Multi-block systems such as the Applied Biosystems ProFlex 3×32 allow simultaneous runs with different cycling conditions, which is useful for method development or mixed-throughput labs.</li>
<li><strong>Sample throughput:</strong> Consider how many reactions you run per day and whether batch processing or continuous operation is more important. A single 96-well block may be sufficient for low-volume labs; multi-block or dual-block systems suit higher-throughput environments.</li>
<li><strong>Temperature uniformity:</strong> Block uniformity affects reproducibility, particularly for sensitive applications such as allele-specific PCR or long-range amplification. When sourcing a used unit, ask whether temperature verification data is available.</li>
<li><strong>Ramp rate:</strong> Faster ramp rates reduce total run time. This matters most in high-throughput settings where cycle time compounds across many runs per day. Peltier-based systems vary in ramp performance by model and age.</li>
<li><strong>Gradient functionality:</strong> Gradient blocks allow simultaneous testing of multiple annealing temperatures across the block in a single run. This is valuable for primer optimization and method development. Not all thermal cyclers include gradient capability — confirm this before sourcing if it is required.</li>
<li><strong>Heated lid:</strong> A heated lid prevents condensation on tube caps during cycling. Confirm the lid heats properly and that the lid pressure mechanism functions correctly on any used unit.</li>
<li><strong>Programming interface:</strong> Older models use button-based interfaces; newer systems use touchscreens with USB or network connectivity. Confirm the interface is functional and that any required software or firmware is accessible.</li>
<li><strong>Laboratory workflow:</strong> Consider whether the cycler needs to integrate with a LIMS, support remote monitoring, or fit within a regulated quality system. For regulated applications, confirm what documentation and qualification support is available for the sourced unit.</li>
</ul>

<h2>Thermal Cycler Types</h2>
<h3>Standard Thermal Cyclers</h3>
<p>Standard thermal cyclers perform conventional endpoint PCR with fixed annealing temperatures. They are suitable for routine amplification, cloning, colony PCR, genotyping, and sequencing reaction preparation. These are the most widely available instruments on the secondary market and represent the majority of used thermal cycler inventory.</p>
<h3>Gradient Thermal Cyclers</h3>
<p>Gradient-capable thermal cyclers apply a temperature gradient across the block, allowing multiple annealing temperatures to be tested simultaneously. This is particularly useful during assay development when the optimal annealing temperature for a new primer pair is unknown. Many mid-range and high-end thermal cyclers include gradient functionality as a standard feature.</p>
<h3>Multi-Block Systems</h3>
<p>Multi-block thermal cyclers such as the Applied Biosystems ProFlex 3×32 accept interchangeable block modules, allowing different block formats or independent cycling programs to run simultaneously. These systems are well suited to core facilities and labs running diverse PCR workflows concurrently.</p>
<h3>Compact and Benchtop Systems</h3>
<p>Compact thermal cyclers such as the Bio-Rad T100 and Thermo Scientific SimpliAmp are designed for smaller benchtop footprints without sacrificing core PCR functionality. These are commonly found in teaching laboratories, satellite labs, and space-constrained research environments.</p>
<p><strong>Note:</strong> Conventional thermal cyclers are distinct from real-time PCR (qPCR) systems. Thermal cyclers perform endpoint amplification and do not include fluorescence detection optics. If you require quantitative PCR with real-time fluorescence detection, see our <a href="/collections/qpcr-systems">qPCR Systems</a> collection.</p>

<h2>Popular Thermal Cycler Manufacturers and Models</h2>
<p>mLab Supply sources thermal cyclers from leading manufacturers including Applied Biosystems, Bio-Rad, Eppendorf, and Thermo Scientific. Common models available to source include:</p>
<ul class="mlab-collection-model-grid">
<li>Applied Biosystems Veriti 96-Well</li>
<li>Applied Biosystems ProFlex 96-Well</li>
<li>Applied Biosystems ProFlex 3×32-Well</li>
<li>Bio-Rad T100</li>
<li>Bio-Rad C1000 Touch</li>
<li>Eppendorf Mastercycler X50</li>
<li>Eppendorf Mastercycler Pro</li>
<li>Thermo Scientific SimpliAmp</li>
<li>Thermo Scientific Arktik</li>
</ul>
<p>Model availability varies. Submit a quote request to confirm current sourcing options for a specific model or configuration.</p>

<h2>Buying Used and Refurbished Thermal Cyclers</h2>
<p>Used and refurbished thermal cyclers are widely available on the secondary market and represent a cost-effective option for many laboratory applications. When evaluating a sourced unit, consider the following:</p>
<ul>
<li><strong>Block condition:</strong> Inspect or request documentation on block surface condition. Corrosion, damaged wells, or worn sample contacts can affect thermal transfer and reproducibility.</li>
<li><strong>Heated lid condition:</strong> Confirm the lid heats to operating temperature and that the lid pressure mechanism closes and seals correctly.</li>
<li><strong>Temperature accuracy and uniformity:</strong> Ask whether temperature verification or calibration data is available. For regulated applications, this documentation may be required for IQ/OQ qualification.</li>
<li><strong>Display and interface condition:</strong> Confirm the display is functional, buttons or touchscreen respond correctly, and the programming interface operates as expected.</li>
<li><strong>Included block or module:</strong> Confirm which block format is included with the unit. Replacement blocks and modules are available separately but add cost.</li>
<li><strong>Power requirements:</strong> Verify voltage and frequency compatibility with your facility. Some instruments sourced from international markets may require step-down transformers.</li>
<li><strong>Software and firmware:</strong> For networked or software-dependent systems, confirm whether the required software version is accessible and whether the instrument can be updated.</li>
<li><strong>Service history:</strong> Where available, review preventive maintenance records and any prior repair documentation.</li>
</ul>
<p>Configuration, condition, included accessories, and available documentation vary by sourced unit. mLab Supply is not an authorized dealer for any thermal cycler manufacturer.</p>

<h2>Applications</h2>
<p>Thermal cyclers support a broad range of conventional PCR and molecular biology workflows, including:</p>
<ul>
<li>Conventional and endpoint PCR amplification</li>
<li>Colony PCR and bacterial screening</li>
<li>Cloning and subcloning workflows</li>
<li>Genotyping and allele-specific PCR</li>
<li>Site-directed mutagenesis</li>
<li>cDNA synthesis and reverse transcription reactions</li>
<li>Sequencing library preparation (pre-amplification steps)</li>
<li>Teaching and training laboratory applications</li>
<li>Research and academic molecular biology workflows</li>
</ul>
<p>For quantitative gene expression analysis, viral load quantification, or other applications requiring real-time fluorescence detection, a dedicated qPCR system is required. See our <a href="/collections/qpcr-systems">qPCR Systems</a> collection.</p>

<h2>Procurement Support</h2>
<p>mLab Supply supports institutional and organizational purchasing for thermal cyclers and related laboratory equipment. Our sourcing team can assist with:</p>
<ul>
<li>Formal written quotations for procurement and budget approval</li>
<li>Institutional purchase order processing</li>
<li>Vendor onboarding and supplier documentation</li>
<li>Net 30 payment terms for qualified organizations — see our <a href="/pages/net-30-credit-terms">Net 30 Credit Terms</a> page for details</li>
<li>Sourcing specific models, configurations, or block formats on request</li>
<li>Multi-unit sourcing for core facilities and larger laboratory buildouts</li>
</ul>
<p>To initiate a quote or discuss procurement requirements, use our <a href="/pages/request-a-quote">Request a Quote</a> form.</p>

<h2>Related Laboratory Equipment</h2>
<p>Thermal cyclers are commonly used alongside other molecular biology and analytical instruments. Related equipment available to source from mLab Supply includes <a href="/collections/qpcr-systems">qPCR Systems</a> for real-time quantitative PCR, <a href="/collections/centrifuges">Centrifuges</a> for sample preparation and pelleting, <a href="/collections/microplate-readers">Microplate Readers</a> for plate-based detection and quantification, and <a href="/collections/automated-liquid-handlers">Automated Liquid Handlers</a> for high-throughput PCR setup and liquid handling workflows. Browse our full <a href="/collections/labequipment">laboratory equipment catalog</a> or <a href="/pages/request-a-quote">request a quote</a> for sourcing assistance.</p>

<h2>Frequently Asked Questions</h2>
<div class="mlab-collection-faq">
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<summary>What is the difference between a thermal cycler and a qPCR system?</summary>
<div class="mlab-collection-faq__answer">
<p>A thermal cycler performs conventional endpoint PCR — it amplifies DNA through temperature cycling but does not measure fluorescence during the reaction. Results are analyzed after the run, typically by gel electrophoresis. A qPCR (real-time PCR) system includes fluorescence detection optics that measure amplification in real time during each cycle, enabling quantitative analysis without post-run gel work. If your application requires gene expression quantification, copy number analysis, or pathogen detection with quantitative output, you need a qPCR system, not a conventional thermal cycler.</p>
</div>
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<summary>What block format should I choose?</summary>
<div class="mlab-collection-faq__answer">
<p>The 96-well format is standard for most molecular biology laboratories and is compatible with the widest range of consumables and protocols. Choose a 384-well block if you run high-throughput assays with small reaction volumes and have compatible liquid handling equipment. Multi-block systems are useful if you need to run different cycling programs simultaneously or want flexibility across block formats. Confirm that your consumables — tubes, plates, and seals — are compatible with the block format of the instrument you source.</p>
</div>
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<summary>What is gradient PCR and do I need it?</summary>
<div class="mlab-collection-faq__answer">
<p>Gradient PCR applies a temperature gradient across the block during the annealing step, so different columns of wells experience different annealing temperatures in a single run. This allows you to identify the optimal annealing temperature for a new primer pair without running multiple separate experiments. If your lab frequently develops new PCR assays or works with novel primer sets, gradient capability is a useful feature. If you run established protocols with validated primers, a standard non-gradient cycler is typically sufficient.</p>
</div>
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<summary>Can mLab Supply source a specific thermal cycler model?</summary>
<div class="mlab-collection-faq__answer">
<p>Yes. If a specific model or configuration is not currently listed, submit a quote request with the model name, block format, and any other requirements. Our sourcing team will search our supplier and secondary-market network and respond with available options, lead time estimates, and pricing.</p>
</div>
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<summary>What should I check when buying a used thermal cycler?</summary>
<div class="mlab-collection-faq__answer">
<p>Key items to verify include block condition and surface integrity, heated lid function and pressure mechanism, temperature accuracy and uniformity (request calibration or verification data if available), display and interface functionality, included block or module format, power requirements, and service history. For regulated laboratory applications, confirm what qualification documentation is available or can be generated for the sourced unit.</p>
</div>
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<summary>Are refurbished thermal cyclers suitable for regulated laboratories?</summary>
<div class="mlab-collection-faq__answer">
<p>Suitability for regulated use depends on your organization's quality system requirements, SOPs, and validation protocols — not solely on the instrument's refurbishment status. Some regulated laboratories successfully qualify and use refurbished thermal cyclers after completing IQ/OQ/PQ protocols with appropriate documentation. Others require new instruments with full manufacturer documentation. Consult your quality assurance team to determine what documentation, calibration records, and qualification steps are required before sourcing a used unit for regulated applications.</p>
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<summary>Does software come with used thermal cycler systems?</summary>
<div class="mlab-collection-faq__answer">
<p>Software and firmware availability varies by model and sourcing channel. Some instruments operate entirely through an onboard interface and do not require external software. Others use PC-based software for programming or data management. Confirm software availability and version compatibility before purchasing, particularly for instruments that require licensed software or network connectivity features.</p>
</div>
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<summary>Does mLab Supply purchase surplus PCR equipment?</summary>
<div class="mlab-collection-faq__answer">
<p>Yes. mLab Supply purchases surplus and used laboratory equipment including thermal cyclers. If your organization is decommissioning PCR instruments, contact us through the <a href="/pages/request-a-quote">Request a Quote</a> page to discuss equipment valuation and purchasing options.</p>
</div>
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<summary>Are institutional purchasing terms available?</summary>
<div class="mlab-collection-faq__answer">
<p>Yes. mLab Supply supports institutional purchasing including formal quotations, purchase order processing, and vendor onboarding documentation. Net 30 payment terms are available for qualified organizations. See our <a href="/pages/net-30-credit-terms">Net 30 Credit Terms</a> page or contact us through the <a href="/pages/request-a-quote">Request a Quote</a> form to discuss your organization's purchasing requirements.</p>
</div>
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