Sanger DTR

<h2 data-section-id="vnaphp" data-start="0" data-end="28">What are Sanger DTR kits?</h2>
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Sanger DTR (Dye Terminator Removal) kits are post-sequencing cleanup products used to remove excess fluorescent dye terminators, unincorporated nucleotides, salts, and short primer fragments from completed cycle sequencing reactions before capillary electrophoresis. During Sanger sequencing, a large excess of fluorescently labeled dideoxynucleotide terminators (ddNTPs) is required to generate DNA fragments of varying lengths. After the reaction, most of these labeled terminators remain unused.
If these contaminants are not removed, they produce strong fluorescent signals known as dye blobs at the beginning of the electropherogram. Dye blobs can obscure the first portion of the sequence, reduce base-calling accuracy, and increase sequencing failure rates. DTR cleanup kits solve this problem by separating the desired labeled DNA fragments from smaller unwanted molecules prior to loading the sample onto a sequencing instrument.
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<h2 dir="ltr">What you will find:</h2>
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HighPrep DTR Magnetic Reagents: A robust paramagnetic bead-based system designed for the rapid removal of BigDye&trade; terminators, primers, and non-targeted amplicons to ensure reliable, high-resolution DNA readings.
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Scalable Purification Formats: Flexible volume options ranging from 1mL to 500mL, optimized for both manual workflows and seamless integration into fully automated liquid handling workstations for high-throughput sequencing labs.
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<h2 data-section-id="109ahyv" data-start="1462" data-end="1499">How to choose a Sanger DTR product</h2>
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Cleanup chemistry
Gel-filtration cleanup remains one of the most commonly used approaches for Sanger sequencing purification. Products such as Performa DTR remove excess dye terminators, salts, nucleotides, and short primers without introducing additional chemicals that may affect downstream analysis. Optima DTR products use proprietary resin technology to achieve similar purification performance while offering additional format flexibility.
Processing format
Single-sample spin cartridges are suitable for laboratories performing occasional sequencing runs or troubleshooting individual samples.
Eight-well strip formats provide a practical solution for laboratories processing small to medium batches without requiring a full 96-well workflow.
Ninety-six-well plate formats are the preferred option for sequencing cores and high-throughput facilities because they allow simultaneous purification of large sample sets and direct transfer into sequencing plates.
Throughput requirements
Laboratories running a few sequencing reactions per week often prioritize convenience and flexibility. High-volume sequencing facilities generally select plate-based DTR systems that minimize handling time and support automated workflows.
Alternative cleanup methods
Ethanol precipitation is a low-cost cleanup method but requires multiple reagent additions, centrifugation steps, and careful sample handling. While effective, it is more labor-intensive and can introduce variability.
Bead-based systems such as BigDye XTerminator offer rapid purification with minimal hands-on time. These systems are often selected when workflow speed is more important than maximizing read length.
Read quality and read length
For laboratories focused on obtaining the longest possible sequence reads and minimizing retests, gel-filtration DTR methods remain the preferred choice. These systems consistently produce high-quality sequence traces with strong early-read performance and reduced dye contamination.
Chemistry compatibility
Most DTR products are compatible with multiple dye-terminator sequencing chemistries, including BigDye Terminator v1.1, BigDye Terminator v3.1, DYEnamic ET, WellRED terminators, and related sequencing reagents. This broad compatibility makes them suitable for both current and legacy sequencing workflows.
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<h2 data-section-id="1fljvas" data-start="4992" data-end="5017">Specifications context</h2>
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Modern Sanger DTR products are designed for compatibility with major capillary electrophoresis platforms and sequencing chemistries. Gel-filtration systems typically use hydrated matrices that require no additional preservatives or buffer exchanges and allow purified sequencing products to be loaded directly into sequencing plates after centrifugation.
As of 2026, gel-filtration DTR cleanup in 96-well plate format remains the most widely adopted purification method in academic, clinical, and commercial Sanger sequencing facilities because of its strong performance in read length, sequence quality, and retest reduction. Bead-based purification systems continue to gain adoption in laboratories where rapid turnaround and high-throughput processing are primary workflow priorities.
Optimize your sequencing cleanup&mdash;&nbsp;<a href="https://mbpinc.net/contact-us" style="color: #236fa1; text-decoration: underline;">contact the MBP team</a> today for a quote on our professional HighPrep DTR solutions.

<h2>What are Sanger sequencing reagents?</h2>
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Sanger sequencing reagents are the chemical components used in chain-termination DNA sequencing, the method developed by Frederick Sanger in which a DNA polymerase extends a primer along a single-stranded template and is terminated at random positions by the incorporation of fluorescently labeled dideoxynucleotide terminators (ddNTPs) that lack the 3'-OH group needed for further elongation. The reaction produces a nested set of labeled fragments that, when resolved by capillary electrophoresis, gives the DNA sequence. Key reagents include dye-terminator mastermix (BigDye v3.1 or equivalent), template DNA, sequencing primer, and cleanup reagents.
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<h2 dir="ltr">What you will discover:</h2>
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<a href="https://mbpinc.net/reagents/sequencing/sanger-sequencing/sanger-dtr" title="Sanger DTR (Dye Terminator Removal):">Sanger DTR (Dye Terminator Removal):</a> Effective purification systems such as Magbio HighPrep DTR employs paramagnetic bead technology to effectively eliminate surplus terminators and salts, guaranteeing clear baselines and extended read lengths.
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<a href="https://mbpinc.net/reagents/sequencing/sanger-sequencing/cycle-sequencing-kit" title="Cycle Sequencing Kits:">Cycle Sequencing Kits:</a> Durable formulations like the SmartDye Terminator 3.1, designed to deliver consistent peak heights and excellent processivity across various DNA templates, including plasmids and PCR products.
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<h2>How to use Sanger sequencing reagents</h2>
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Clean up PCR products before sequencing reactions
Residual PCR primers and unincorporated dNTPs can interfere with the sequencing reaction by competing with the sequencing primer or being incorporated by the polymerase. ExoSAP enzymatic cleanup or column-based purification removes these contaminants before the sequencing reaction is set up.
Set up sequencing reactions with the minimum recommended cycle number
Sanger sequencing cycle sequencing reactions typically require 25&ndash;30 thermocycler cycles, fewer than a standard PCR, since only one primer is used and each cycle synthesizes a new set of terminated fragments rather than doubling the product. Using too many cycles can deplete the dye-terminator terminators and reduce signal quality.
Clean up the completed sequencing reaction before capillary electrophoresis
Unincorporated dye-terminator ddNTPs must be removed before capillary electrophoresis injection, since free fluorescent ddNTPs obscure the first 25&ndash;50 bases of the read. Column purification, ethanol-EDTA precipitation, or size-exclusion spin columns are standard cleanup approaches.
Use 10&ndash;50 ng of purified PCR product as template
Too little template produces weak, noisy signal; too much produces dye blobs from terminator over-incorporation. Typically 10&ndash;50 ng of PCR product or 200&ndash;500 ng of plasmid DNA is appropriate for a single sequencing reaction.
Position the sequencing primer at least 100 bp from the target region
Sanger reads have lower quality in the first 50&ndash;100 bases, with the high-quality window running from approximately base 100 to 900 from the primer. Placing the sequencing primer so that the target region falls within this window gives the best data quality.
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<h2>Specifications context</h2>
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BigDye Terminator v3.1 has been the dominant commercial dye-terminator chemistry since its introduction, incorporating fluorescently labeled ddNTPs with distinct emission wavelengths for reads of consistently high quality up to approximately 1000 bp. As of 2026, Sanger sequencing remains the method of choice for mutation confirmation, plasmid verification, and colony screening, because its per-sample cost and turnaround for single loci is substantially more practical than NGS for these routine targeted applications.
Ensure the precision of your sequence&mdash;<a href="https://mbpinc.net/contact-us" title="reach out to the MBP team">reach out to the MBP team</a> now for a quote on our expert Sanger sequencing services.

Sanger Sequencing

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HighPrep™ DTR - MSDS

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Magbio HighPrep DTR

HighPrep DTR — DT-70000 by MagBio Genomics — is a magnetic bead reagent for Sanger sequencing reaction cleanup that removes dye-labeled terminators and salts from ABI and MegaBACE sequencing reactions in 96-well and 384-well formats. The Bind-Wash-Elute protocol uses 10 µL per sample in 96-well mode and 5 µL per sample in 384-well mode, with elution in low-salt buffer or nuclease-free water suitable for direct injection on capillary electrophoresis systems. Available from MBP in 1 mL, 5 mL, 50 mL, 250 mL, and 500 mL sizes — place orders via <a href="https://www.mbpinc.net/quickorder">Quick Order</a> or contact <a href="mailto:customerservice@mbpinc.net">customerservice@mbpinc.net</a>.