National Diagnostics TBE Sequencing Buffer (10X): Precision Formulation for High-Resolution Electrophoresis
National Diagnostics TBE Sequencing Buffer (10X) is the premier choice for laboratories demanding absolute precision in DNA sequencing and high-voltage electrophoresis. In manual DNA sequencing, the clarity of the gel and the integrity of the buffer are critical; even minor impurities can cause “smiling” effects, band distortion, or background noise that compromises data interpretation. This buffer is specifically optimised to address these challenges, providing a stable, high-ionic-strength environment that maintains the structural integrity of nucleic acids during extended runs.
Manufactured using advanced stabilisation technology, this 10X concentrate is formulated with 18 MegOhm ultra-pure water and filtered through a 0.2-micron membrane. This rigorous purification process removes particulate matter and nucleases (RNase and DNase), ensuring that the buffer remains contaminant-free. The Tris-Borate-EDTA composition is meticulously balanced to provide higher buffering capacity than standard TAE buffers, making it the ideal standard for separating smaller DNA fragments (under 1.5 kb) and for use in denaturing urea polyacrylamide gels.
Key Benefits:
- Enhanced Resolution: Minimises Band Distortion. The high buffering capacity prevents pH drift during high-voltage runs, significantly reducing “smiling” and sharpening band resolution for accurate sequencing data.
- Ultra-Pure Formulation: 0.2µm Filtered Quality. Produced with 18 MegOhm deionised water and micro-filtered to eliminate particulates, preventing gel artifacts and ensuring consistent conductivity.
- Optimised for Sequencing: Urea Compatibility. Specifically designed to complement urea-based denaturing gels, ensuring optimal migration and separation of single-stranded DNA.
- Ready-to-Use Concentrate: Consistent Reproducibility. Supplied as a stable 10X concentrate that eliminates batch-to-batch variation associated with bench-made buffers, saving time and improving experimental reliability.
Technical Insights
The superior performance of National Diagnostics TBE Sequencing Buffer lies in its ionic stability. Unlike Tris-Acetate (TAE) buffers, which can become exhausted during long or high-voltage electrophoresis runs, the borate ions in TBE interact with the polyhydroxyl groups of the agarose or acrylamide matrix (and potentially the ribose sugars), creating a more complex conductive environment. This results in lower mobility for larger DNA fragments but provides exceptional separation for smaller fragments, which is crucial for sequencing applications.
Furthermore, the manufacturing process prioritises the elimination of nuclease activity. By utilizing 0.2-micron filtration immediately prior to bottling, National Diagnostics ensures that the buffer is free from particulate contaminants that could act as nucleation points for precipitation or scatter light during documentation. This level of purity is essential when working with sensitive samples where degradation must be strictly controlled.
Specifications
- Concentration: 10X Concentrate (Must be diluted to 1X or 0.5X before use)
- Composition (1X): 0.089M Tris Base, 0.089M Boric Acid, 2mM Na2EDTA (pH 8.3)
- Filtration: 0.2 micron membrane filtered
- Water Quality: 18 MegOhm deionised water base
- Contaminant Control: Certified RNase and DNase free
- Storage: Room temperature (Stable for long-term storage)
- Application: DNA Sequencing, High-Voltage Electrophoresis, Urea Gels