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Nucleic Acid Gel Staining

Reagents & Accessories for DNA/RNA Gel Electrophoresis

EMBER™ Ultra DNA & RNA Gel Kits

Most sensitive nucleic acid gel stains in a convenient pre-coated agarose format.

GelRed®

Safer and more sensitive than Ethidium Bromide.

GelGreen®

A safer and more sensitive alternative to SYBR® Green I green fluorescent gel stains.

PAGE GelRed®

Similar to our classic GelRed® stain, but made to stain DNA in PAGE gels with high sensitivity.

DNAzure® Visible Gel Stain

A novel DNA gel stain that allows visualization of DNA gel results with the naked eye. Ultrasensitive detection down to ~1 ng DNA.

Glo-Plate™ White

Reliably and uniformly develop DNAzure® stained gels. Features a compact and lightweight design ideal for shared lab benches.

Go-Go™ Fast DNA Gel Running Buffer

Obtain results up to 3X faster with this low ionic strength buffer for higher voltage electrophoresis.

Classic Gel Stains

Featuring high-quality and low cost forms of Oxazole Gold (SYBR® Gold) and Thiazole Green (SYBR® Green I).

Gel-Bright™ Gel Illuminator

Novel laser diode-based illumination for excellent performance with green and red fluorescent dyes.

DNA Ladders, Buffers, & Other Accessories

Explore our ready-to-use DNA ladders, TBE buffers, and other products useful for gel electrophoresis

EMBER™ Ultra DNA & RNA Gel Kits

The Most Sensitive DNA & RNA Gel Stains Available

The EMBER™ Ultra DNA Gel Kit and EMBER™ Ultra RNA Gel Kit provide the highest sensitivity and resolution for DNA or RNA. They are available in a convenient pre-coated agarose format and therefore do not need a post-electrophoresis staining step. Simply cast your gel using the provided EMBER™ Ultra Precoated Agarose and prepare your samples with the include EMBER™ Ultra Loading Dye. Bands can be imaged immediately after electrophoresis.

EMBER™ Ultra Gel Kit Features:

  • Easy-to-use pre-coated agarose format for DNA or RNA gel electrophoresis
  • Superior sensitivity and resolution over other nucleic acid gel stains
  • No need for post-electrophoresis staining
  • EMBER™ Ultra RNA Gel Kit includes formamide in the loading dye
  • Optimal for blue LED gel imagers
  • Also compatible with UV imagers

EMBER™ Ultra DNA Gel Kit: 
Detect ≤1 ng DNA

Experience unmatched sensitivity and convenience with the EMBER™ Ultra DNA Gel System—featuring pre-coated agarose and loading dye for immediate imaging post-electrophoresis. Detect as little as ≤1 ng DNA with no staining step required.

Learn more about the EMBER™ Ultra DNA Gel Kit.

Agarose gel electrophoresis of 1 kb and 100 bp DNA ladders using the EMBER™ Ultra DNA Gel Kit compared to post-staining with SYBR® Gold. Five-fold serial diluti... See More

EMBER™ Ultra RNA Gel Kit: 
Detect ≤5 ng RNA

Achieve exceptional RNA detection with the EMBER™ Ultra RNA Gel System—no post-staining required. Pre-coated agarose and denaturing loading dye deliver ≤5 ng sensitivity for fast, reliable results and clear RNA integrity assessment.

Learn more about the EMBER™ Ultra RNA Gel Kit.

Comparison of EMBER™ Ultra RNA Gel (left) with 1% agarose gel post-stained with SYBR® Gold. NEB ssRNA Ladder or total Jurkat cell RNA were denatured at 70°C for... See More

GelRed® & GelGreen® Nucleic Acid Gel Stains

How Safe is Your Gel Stain?

A number of ethidium bromide (EtBr) alternatives are marketed as being safe. In fact, many so-called “safe” gel stains contain dyes that are well known to bind DNA in living cells, with cytotoxic effects. GelRed® and GelGreen® are highly sensitive gel stains designed to be nontoxic and nonmutagenic by virtue of being cell membrane impermeable, so they cannot enter living cells. Download our white paper to learn more.

The Gold Standard of DNA Gel Stains

GelRed® and GelGreen® are safer alternatives to EtBr, SYBR® Safe, and others

While EtBr has been widely used for its low cost, but its mutagenicity and associated safety and disposal issues can make it costly overall. Biotium’s GelRed® and GelGreen® dyes were developed to offer superior sensitivity and unmatched safety—proven non-toxic and safer by independent labs. They're also available pre-coated on ultra-pure LE agarose for added convenience, eliminating the need to handle concentrated dye.

Learn more on the GelRed® and GelGreen® technology page or download our application note on their use with the UVP GelDoc-It® system, or our application note on using GelGreen® on the UVP GelDoc-It® imaging system with the Visi-Blue™ Converter Plate.
GelRed® & GelGreen® do not readily penetrate cells. HeLa cells were incubated for 30 minutes at 37°C with 1X SYBR® Safe, GelRed®, or GelGreen®. SYBR® Safe rapid... See More

GelRed® Features:

  • Visualized with UV transilluminators using ethidium bromide detection settings
  • Most sensitive fluorescent red DNA gel stain
  • Safer and more environmentally friendly than EtBr, as well as other so-called “safe” gel stains
  • Can be used as a post-stain, or precast in agarose
  • Available as a 10,000X stock, ready-to-use 3X solution, and in 6X loading buffer format

GelGreen® Features:

  • Visualized with blue light boxes or UV light box using SYBR® green detection settings
  • More sensitive than SYBR® Safe
  • Safer for users and the environment than SYBR® Safe and other so-called “safe” gel stains
  • Can be used as a post-stain, or precast in agarose
  • Available in a concentrated 10,000X stock
Comparison of ethidium bromide (EtBr) and GelRed® in precast gel staining using 1% agarose gel in TBE buffer. Two-fold serial dilutions of 1 kb Plus DNA Ladder ... See More
Comparison of GelGreen® and SYBR Safe in post-electrophoresis staining of 1% agarose/TBE gels. Two-fold serial dilutions (200 ng, 100 ng, 50 ng and 25 ng) of 1 ... See More

PAGE GelRed® for Acrylamide Gels

PAGE GelRed® is a version of our popular GelRed® dye that was specially formulated for staining DNA in polyacrylamide gels. Like the classic GelRed®, PAGE GelRed® has also been found to be safe by independent laboratories.

Download the PAGE GelRed® Safety Report.

PAGE GelRed® Features:
  • Visualized with UV transilluminators using ethidium bromide detection settings
  • Formulated for efficient penetration and staining of polyacrylamide gels
  • Proven safe and environmentally friendly
  • Compatible with downstream cloning applications

Choose the Right Stain for Your Application

Product / MethodProcedureAdvantagesDisadvantagesRecommended for
DNA staining with EMBER™ Ultra DNA Gel KitAgarose is supplied pre-coated with EMBER™ Ultra Dye, just dissolve, heat, and pour.• Safer and more convenient, no need to handle concentrated dye

• Superior sensitivity, detect as little as ≤1 ng DNA

• No need for post-electrophoresis staining

• Optimal for blue LED gel imagers
• Not suitable for PAGE, DGGE, EMSA, or PFGE gels

• Dye may cause band migration issues when loading larger amounts of DNA (more than ~200 ng/band), or for some restriction digests
• Routine agarose gels
RNA staining with EMBER™ Ultra RNA Gel KitAgarose is supplied pre-coated with EMBER™ Ultra Dye, just dissolve, heat, and pour.• Safer and more convenient stain for RNA, no need to handle concentrated dye

• Superior sensitivity, detect as little as ≤5 ng RNA

• No need for post-electrophoresis staining

• Included loading dye contains formamide for denaturing

• Optimal for blue LED gel imagers
• Will stain DNA as well as RNA

• Dye may cause band migration issues when loading larger amounts of RNA (more than ~200 ng/band)
• Routine RNA gel electrophoresis

• Evaluate total RNA integrity and DNA contamination
DNA prestaining with GelRed® Prestain Plus 6X DNA Loading DyeGelRed® loading buffer is added directly to the DNA sample before loading• Fast & simple: one-step sample loading & DNA staining

• Less concentrated dye for safer handling

• Can re-run a gel to use empty lanes
• Not recommended for PAGE, DGGE, EMSA, or PFGE gels

• Dye may cause band migration issues when loading larger amounts of DNA (more than ~100 ng/band), or for some restriction digests
• Routine agarose gels

• Recommended loading 50-200 ng ladder or 2-5 uL PCR product ( ~100 ng/band or less)
Precast staining with GelRed® 10,000X in water or GelGreen® 10,000X in water

GelRed® or GelGreen® is mixed with molten agarose before gel castingFamiliar protocol, rapid results
Precast staining with GelRed® Agarose LE or GelGreen® Agarose LE
Agarose is supplied pre-coated with GelRed® or GelGreen®, just dissolve, heat, and pourSafer & more convenient, no need to handle concentrated dye
Post-electrophoresis staining with GelRed® 10,000X in water or GelGreen® 10,000X in water
- or -
GelRed® 3X in water
No fluorescent dye is added to the gel, it is stained in 3X GelRed® or 3X GelGreen® solution after electrophoresis• Most accurate sizing/sharpest bands

• Staining solution can be re-used

• Enhance sensitivity by adding NaCl
Extra staining step (up to 30 minutes) after electrophoresis (some customers report good results after only 5 minutes if dye is not reused)• Highly accurate band sizing

• Gels with more than ~100 ng DNA per band

• Analyzing restriction digests
Post-electrophoresis staining of PAGE gels using PAGE GelRed® 10,000X or 1X in waterNo fluorescent dye is added to the gel, it is stained in 1X PAGE GelRed® solution after electrophoresis• Formulated for efficient penetration and staining of polyacrylamide gels

• Like the classic GelRed®, it is safe and environmentally friendly
Extra staining step of approx. 30 minutes after electrophoresisStaining of nucleic acids in PAGE gels

DNAzure® Visible DNA Gel Stain

Visualize Your Results with the Naked Eye

Biotium offers a truly unique visible DNA gel stain called DNAzure®. DNAzure® dye binds to DNA in an agarose gel, and after exposure to light develops visible blue bands. The blue staining is long-lasting and doesn’t require any further light source, making it ideal for cutting out bands (no worry about UV light damaging your DNA sample or your eyes). Even more impressive, this visible stain is more sensitive than certain fluorescent DNA gel stains.

DNAzure® Features:

  • Visible blue bands following 5-30 min light exposure
  • Ultrasensitive detection, as little as ~1 ng DNA
  • Simplified DNA band excision, without the need for DNA damaging UV light
  • Expensive gel documentation systems not required for imaging
  • Compatible with downstream cloning applications
  • Bands stable for weeks after color development
  • Detectable on near-infrared scanners
Biotium’s 1 kb DNA ladder was loaded on a 1% agarose gel in two-fold dilutions, ranging from 200 ng to 25 ng total ladder per lane. The mass of the 500 bp band ... See More

Glo-Plate™ White Photoactivation Device

Reliably Develop DNAzure® Stained Gels

Specifically created to empower educational labs and academic environments, the Glo-Plate™ White offers a cost-effective and user-friendly alternative to expensive DNA gel imaging systems or hazardous UV light. The device delivers even, high-intensity white LED illumination across its panel, optimized for activating the blue dye precipitation in DNAzure®-stained DNA gels.

Glo-Plate™ White Features

  • Bright, uniform illumination: Designed for developing gels stained with DNAzure® Blue Nucleic Acid Gel Stain
  • Eliminates UV light hazards: DNAzure® allows direct visualization of blue DNA bands without UV light
  • Small footprint: Compact, lightweight design ideal for shared lab benches
  • Two-year warranty included

Go-Go™ Fast DNA Gel Running Buffer

Wish Your Agarose Gel Was Done Already?

Speed up routine DNA gel analysis with Biotium’s Go-Go™ Fast DNA Gel Running Buffer. This novel low ionic strength running buffer allows you to run DNA agarose gels at higher voltage to get results up to 3X faster than with TAE or TBE buffer.

  • Save time: Run your gel 3X faster than with TAE or TBE
  • Clear results: Provides crisp band resolution
  • Versatile: Excellent results with GelRed®, GelGreen®, and other popular gel stains
  • Supplied as a 50X concentrated stock solution

 

Go-Go™ Fast DNA Gel Running Buffer gives excellent results with GelRed® and GelGreen® DNA gel stains, as well as with GelRed® Prestain Plus 6X DNA Loading Dye. The buffer can be used with other commonly used gel stains like SYBR® Safe and ethidium bromide.

GelRed® Prestain Plus 6X DNA Loading Dye was used to load 1 kb DNA ladder 1% agarose gels cast in 1X Go-Go™ Fast DNA Gel Buffer (left) or 1X TBE (right). The Go... See More

Classic Gel Stains

Biotium offers classic gel stains: Oxazole Gold (SYBR® Gold), a UV-excitable dye, is highly sensitive for DNA/RNA, especially RNA and single-stranded oligos. Thiazole Green (SYBR® Green) is UV/blue light-excitable and works for DNA/RNA in agarose or polyacrylamide gels. Ethidium bromide (EtBr), also UV-excitable, is widely used but is a known mutagen.
Biotium's 1 kb DNA ladder or single-stranded RNA ladder (NEB) were run on a 1% agarose TBE gel at 0.1 ug DNA (lane 1), or 0.01 ug, 0.03 ug, or 0.3 ug RNA per la... See More

Gel-Bright™ Laser Diode Gel Illuminator

Novel Laser Diode Illumination for Superior Performance

Gel illuminators have traditionally relied on UV illumination for visualization of fluorescently labeled nucleic acids and proteins. However, UV-based imaging can damage skin and eyes, as well as your DNA samples. LED-based illuminators were developed as a safer alternative to UV, but often have high background and dimmer signal due to excessive ambient light and poor excitation efficiency.

In partnership with Biotium, OMEC Medical has developed a new type of gel illuminator that uses laser diodes (LDs) optimized for brighter and clearer imaging of gels.

The new laser diode-based Gel-Bright™ offers better sensitivity over UV-based transilluminators when imaging green dyes such as GelGreen® or SYBR® Green, as well as significantly better performance over blue LED gel illuminators for red dyes such as GelRed®, ethidium bromide (EtBr), and One-Step Lumitein™ Protein Gel Stain. Read the full press release.

The Laser Diode Advantage:

  • Novel LD illumination: Superior performance for imaging fluorescent gels
  • Brighter signal: More sensitive than UV for green dyes
  • Versatile: Works well with both green and red dyes, unlike blue LED illuminators
  • Safer: Eliminates UV light hazards for user and DNA samples

Other Features:

  • Optimized lighting angle for even illumination
  • Adjustable light intensity
  • Multi-hinged adjustable amber filter for optimal signal
  • Easy access to the gel for gel slice excision
  • Compact and portable design

Sensitive Gel Imaging Without UV Hazards

Two-fold dilution series of Biotium’s Ready-to-Use 1 kb DNA Ladder were separated on 1% agarose TBE gels pre-cast with GelRed® or GelGreen®. Total DNA loaded pe... See More

DNA Ladders, Buffers, & Other Accessories

FAQs

The main difference between GelRed® and GelGreen® is their fluorescence excitation and emission wavelengths. GelRed® has red fluorescence, similar to ethidium bromide. GelGreen® has green fluorescence, similar to SYBR® Green or SYBR® Safe. Both dyes are compatible with standard UV transilluminators. GelGreen® is also compatible with blue light transilluminators, which allow users to avoid exposing themselves and their DNA samples to ultraviolet radiation.

GelRed® and GelGreen® have higher sensitivity for double stranded nucleic acids compared to single stranded nucleic acids, but GelRed® is more sensitive for staining single stranded nucleic acids than GelGreen®. GelRed® is about twice as sensitive for double stranded nucleic acids compared to single-stranded nucleic acids, and about five times more sensitive than GelGreen® for staining single stranded nucleic acids.

For more information about these products, please visit our DNA stains technology page.

In AMES and related tests, GelRed® and GelGreen® were shown to be much safer alternatives to EtBr and SYBR dyes. Nevertheless, please exercise safe laboratory practices when using these reagents.

Please visit our website www.biotium.com to download a comprehensive safety report.

GelRed® is compatible with a standard UV transilluminator (302 or 312 nm).
GelGreen® has sufficient absorption between 250-300 nm and a strong absorption peak at around 500 nm. GelGreen® is compatible with a 254 nm UV transilluminator or a gel reader with visible light excitation such as a Dark Reader or a 488 nm laser gel scanner.

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