Compared to polyacrylamide gel, agarose has a lower resolution but wider range of separation. Lower grades of agarose can be contaminated with other polysaccharides, salts and proteins. Such impurities can alter the gelling/melting temperature of agarose solutions or affect the ability to use the recovered nucleic acid sample in a post-electrophoresis application.
Fisher Bioreagents
High-quality, high-purity, and pre-qualified reagents that meet your life science needs, all from one source.
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Fisher Bioreagents: Your Source for Life Science Products

Obtaining optimal results in your life science research requires careful selection of reagents. When your experiments require exact conditions, you can depend on the reliability of Fisher Bioreagents™ products for:
- QUALITY: Tight specifications
- CONSISTENCY: Lot-to-lot uniformity
- SELECTION: Powders, granules, concentrated stock solutions, or ready-to-use liquids
- PACKAGING: State-of-the-art containers designed for safety and utility
- CONVENIENCE: Prequalified for a variety of applications
- ECONOMY: Configurations to meet all budgets
- SCALE: From bench to batch sizes
Fisher Bioreagents meet the needs of every budget and scale. Economical powders come in a variety of package sizes, while concentrated stock solutions offer convenient one-step dilution. Realise the greatest possible time savings when you choose a Fisher Bioreagents ready-to-use solution.
Restriction Enzymes
Resources
Fisher BioReagents Relative Activity of OPTIZYME Guide
- Filename
- 16475_fisher-scientific-bioreagents-relative-activity-optizyme-guide.pdf
- Size
- 57 KB
- Format
- application/pdf
Fisher BioReagents Reaction Buffers for OPTIZYME Guide
- Filename
- 16475_fisher-scientific-bioreagents-reaction-buffers-optizyme-guide.pdf
- Size
- 64 KB
- Format
- application/pdf
Fisher BioReagents Recognition Sequences for OPTIZYME Guide
- Filename
- 16475_fisher-scientific-bioreagents-recognition-sequences-optizyme-guide (1).pdf
- Size
- 62 KB
- Format
- application/pdf
Fisher BioReagents Site-Specific Methylation on OPTIZYME Guide
- Filename
- 16475_fisher-scientific-bioreagents-site-specific-methylation-optizyme-guide.pdf
- Size
- 98 KB
- Format
- application/pdf
Bioreagent Buffers
Buffers for Every Budget and Scale
- Economical powders come in various package sizes
- Concentrated stock solutions provide convenience with one easy-dilution step
- Ready-to-use solutions offer the greatest possible time savings
Technical Tip
CellPURE Biological Buffers are of the highest quality (purity ≥99%). They are tested for low heavy metal content and the absence of endotoxins, nucleases, and proteases. It is important to use only water of the highest quality to prepare the buffer solutions. Water that stands too long in pipes or water produced by a system needing routine maintenance increases the risk of contamination of buffer solutions. Fisher BioReagents provides several grades of high-purity water suitable for the preparation of high-quality buffer solutions.
Resources
Vital Reagents, Essential Products for Life Science Research
- Filename
- 16475_Vital_Reagents.pdf
- Size
- 2 MB
- Format
- application/pdf
Buffer Guide
- Filename
- Fisher_Bioreagents_Buffer_Guide.pdf
- Size
- 14 MB
- Format
- application/pdf
Antibiotics and Antimycotics
Water
Workflow
Electrophoresis
Fisher Bioreagents offers a wide range of reagents for electrophoresis applications. Choosing the right reagents will allow you to achieve optimal results in your experiment. Use our quick selection guides to assist you in finding the right grades of agarose, buffers and ladders.

Fisher BioReagents provides a wide range of standards, including routine DNA ladders for quick size and quality assessment as well as Fisher Bioreagents™ exACTGene™ DNA ladders that allow for quantitative analysis.
Fisher Bioreagents™ RiboLadders™ RNA Standards
These standards can be used to assess single-stranded RNA molecules on both native and denaturing agarose gels. These unique RNA standards are lyophilized to reduce thawing-related degradation, to prolong shelf life, and to ensure consistent performance.
exACTGene and Routine DNA Ladders
Ready-to-use (pre-mixed with the loading dye), room temperature, stable DNA ladders are available for all common electrophoresis applications.
Application | Low EEO | Numbers of Bands | Number of Loadings |
---|---|---|---|
exACTGene DNA ladders are ideal for qualitative analysis, quantitative estimation, and size assessment | |||
PCR fragment analysis | 25-650bp | 14 | 100/10μL |
PCR fragment analysis, small DNA digests | 25-1,000bp | 12 | 100/10μL |
Quick check of PCR or enzyme digestion results | 50-2,000bp | 8 | 100/10μL |
General purpose, small DNA fragments | 100-1,000bp | 10 | 100/10μL |
Fast run times, small DNA fragments | 100-2,000bp | 8 | 100/10μL |
Clone identification | 100-2,686bp | 14 | 100/10μL |
Large size PCR or cloning | 100-2,000bp | 10 | 100/10μL |
Small or large cloning application | 100-5,000bp | 16 | 100/10μL |
General purpose, large digested DNA | 300-10,000bp | 13 | 100/10μL |
General purpose, wide size range | 100/10,000bp | 19 | 100/10μL |
General purpose, extra-large fragments | 300-24,000bp | 15 | 100/10μL |
Routine DNA ladders are designed for qualitative analysis and size assessment | |||
Small fragments, quick size assessment | 50-2,000bp | 11 | 200/5μL |
Quick size assessment of broad size range | 50-10,000bp | 16 | 200/5μL |
Fisher Bioreagents
Fisher Bioreagents
Lysis Buffers
Within our Thermo Fisher Scientific Laboratory Chemicals portfolio we offer all the necessary products to prepare lysis buffer solutions with the correct specifications and in a range of convenient pack sizes. We also offer specialized custom services and can provide the products in bulk quantities if required.
- Filename
- Lysis_Buffers.pdf
- Size
- 5 MB
- Format
- application/pdf
Fisher BioReagents Cloning Troubleshooting Guide
This troubleshooting guide for cloning includes a listing for problems, causes, and solutions.
- Filename
- fisher-scientific-bioreagents-troubleshooting-cloning-guide.pdf
- Size
- 67 KB
- Format
- application/pdf
Fisher BioReagents Cleavage Efficiency Guide
This guide lists the activities of OPTIZYME restriction enzymes when their target sites are located close to the ends of PCR products.
- Filename
- fisher-scientific-bioreagents-cleavage-efficiency-pcr-fragments-guide.pdf
- Size
- 52 KB
- Format
- application/pdf
Fisher BioReagents Star Activity of Restriction Enzymes Guide
This guide lists the enzymes that may exhibit star activity, especially under reaction conditions that deviate from those recommended.
- Filename
- fisher-scientific-bioreagents-star-activity-enzymes-guide (1).pdf
- Size
- 68 KB
- Format
- application/pdf
Fisher BioReagents Troubleshooting Unexpected Cleavage Pattern Guide
Troubleshooting Guide for DNA Digestion: Unexpected Cleavage Pattern and Gel Shift. Table lists possible causes and recommended solutions.
- Filename
- fisher-scientific-bioreagents-troubleshooting-cleavage-pattern-guide.pdf
- Size
- 54 KB
- Format
- application/pdf
Focus on Electrophoresis
Fisherbrand, Fisher Chemical and Fisher BioReagents working together to deliver reliable and essential products that meet your most demanding electrophoresis applications.
- Filename
- 13094_FOCUS_ph_electrophoresis (1).pdf
- Size
- 114 MB
- Format
- application/pdf
Fisher BioReagents Digestion of Agarose Embedded DNA Guide
This guide for digestion of agarose embedded DNA includes a listing of units of enzymes needed for DNA cleavage in 16hours.
- Filename
- fisher-scientific-bioreagents-digestion-agarose-dna-guide (1).pdf
- Size
- 46 KB
- Format
- application/pdf
Fisher BioReagents Troubleshooting Guide for DNA Digestion Guide
Incomplete digestion or no digestion. Table includes a listing of possible causes and recommended solutions.
- Filename
- fisher-scientific-bioreagents-troubleshooting-dna-digestion-guide.pdf
- Size
- 80 KB
- Format
- application/pdf
Fisher BioReagents Molecular Diagnostics Guide
Molecular diagnostics is the fastest-growing field of laboratory science. Fisher BioReagents products are ultrapure and tested for molecular applications.
- Filename
- fisher-scientific-bioreagents-molecular-diagnostics-guide (1).pdf
- Size
- 724 KB
- Format
- application/pdf
Fisher BioReagents SurePrep Purification Kits Guide
SurePrep Purification Kits for isolating RNA, DNA, and proteins in clinical, forensic, and medical research.
- Filename
- fisher-scientific-bioreagents-sureprep-purifications-kits-guide.pdf
- Size
- 1002 KB
- Format
- application/pdf