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PCR & DNA Amplification

EvaGreen® Dyes for qPCR and Other Applications

Bright, sensitive, and environmentally safe dyes that are ideal for qPCR and many other applications.

Cheetah™ Hot-Start Taq Polymerase

Featuring a novel chemical modification for up to 10X faster activation and superior long-term stability.

EvaRuby™ Dye for qPCR & HRM®

A spectrally unique intercalating red dye that expands probe-based multiplexing capabilities and is validated for HRM®.

Forget-Me-Not™ EvaGreen® qPCR Master Mix

EvaGreen® Dye-based master mix with 1- or 2-color tracking to spot pipetting errors at a glance

Forget-Me-Not™ Universal Probe qPCR Master Mix

Suitable for all fluorescent probe-based PCR methods, including TaqMan®, dual-labeled BHQ® probes, and Molecular Beacons.

N-Flux™ 5X Digital PCR Master Mix

High performance, dye-free master mix specifically formulated for chip-based digital PCR (cdPCR) platform.

VeriFluor™ Far-Red Passive Dye

Offers reliable and steady PCR normalization, and functions as ROX alternative and direct replacement for Mustang Purple™.

EvaEZ™ Fluorometric Polymerase Activity Assay

Simple, accurate, and non-radioactive nucleic acid polymerase activity assay containing EvaGreen® Dye.

PCR Accessories & Related Products

dNTPs, ROX reference dye, hot-start and warm-start enzyme modification kits, fluorescently labeled nucleotides, and more.

EvaGreen® & EvaGreen® Plus: Next-Gen qPCR Dyes

Figure 1. EvaGreen® Dye binds to dsDNA via a “release-on-demand” mechanism.

EvaGreen® dyes are next-generation DNA-binding dyes that are ideal for quantitative real-time PCR (qPCR) and many other applications. Biotium scientists designed the dyes by taking into consideration several essential dye properties relevant to PCR. The result of our efforts is a dye superior to SYBR® Green I and other commercial PCR or high-resolution melt curve (HRM) dyes.*

EvaGreen® Dye is used in all of Biotium’s dye-based qPCR master mixes, which combine superior brightness and sensitivity, with the ability to do sensitive melt curve analysis in the same reaction. EvaGreen® Dye is environmentally safe because it is impermeant to cell membranes, unlike SYBR® Green I, which enters cells rapidly and is known to be a powerful mutation-enhancer.
Figure 2. EvaGreen® is non-toxic, non mutagenic and non hazardous to aquatic life.

EvaGreen® Plus Dye is an improved alternative to Biotium’s original EvaGreen® Dye that retains the same essential benefits while providing lower background and higher signal compared to original EvaGreen® Dye. The dye has an excitation maximum that is a better fit for common qPCR instruments, resulting in improved sensitivity. As a result, EvaGreen® Plus Dye can give earlier Ct values and better signal discrimination. These properties offer potential advantages for digital PCR and isothermal amplification applications.

See EvaGreen® Dye Technology to learn more.

*Practicing HRM may require a license from Idaho Technologies, Inc.

EvaGreen®: The only DNA-binding dye validated for ddPCR

See the full list of references here.

Highlighted Citation

ddPCR technology has enabled quantitative multiplex PCR by partitioning samples into thousands of droplets that can be individually measured. Initially designed for fluorescent probe-based detection, McDermott et al. demonstrate how EvaGreen® dye can be used with ddPCR to analyze multiple targets within a sample by distinguishing the amplified DNA mass per droplet. Results show EvaGreen®-based ddPCR performs comparably with TaqMan®-based ddPCR.

“By partitioning each sample prior to thermal cycling, we demonstrate that it is now possible to use a DNA-binding dye for the quantification of multiple target species from a single reaction.”

McDermott et al.

Cheetah™ HotStart Taq

Faster activation and superior long‑term stability
Cheetah™ HotStart Taq is Biotium’s proprietary chemically modified Taq polymerase designed for reducing non-specific DNA amplification in PCR. Cheetah™ Taq features a novel chemical modification that completely suppresses its activity prior to activation, and offers a much faster activation time than AmpliTaq Gold® or HotStarTaq®.
Cheetah™ Taq requires only 2 minutes of heat activation for full recovery of activity. Comparison of hot-start recovery of polymerase activity for Cheetah™ Taq ... See More

Advantages of Cheetah™ Hotstart Taq

  • Rapid 2 minute hot-start activation via novel chemical modification
  • Antibody-free, low-DNA Taq for cleaner results
  • Superior long-term stability compared to other chemically modified Taq
  • Reduced risk of intramolecular cross-linking that can occur in AmpliTaq® Gold
  • Convenient, ready-to-use kits and bulk formats are available

Cheetah™ HotStart Taq is available in two different formulations, Cheetah™ FLEX and Cheetah™ PEA-PLEX (see below for more information).

Note: Cheetah™ HotStart Taq is available for licensing and bulk purchase; contact us at techsupport@biotium.com for evaluation samples and to discuss custom size, packaging, or formulation options.

Cheetah™ FLEX HotStart Taq DNA Polymerase

A superior HotStart Taq that is ideal for FLEXible applications

  • Validated for fast cycling PCR
  • Third-party validated for qPCR-based proximity extension assays (PEA)
  • Enzyme available in standard or bulk sizes

Cheetah™ PEA-PLEX HotStart Taq DNA Polymerase

Uniquely formulated for NGS-based high-throughput proximity extension assays (PEA)

  • Validated for fast cycling qPCR
  • Third-party validated for NGS-based high-throughput PEA
  • Enzyme available in standard or bulk sizes

EvaRuby™ Dye for qPCR & HRM® Analysis

A spectrally unique dye to expand multiplexing

EvaRuby™ Dye is the first visible red DNA-binding dye for qPCR, HRM®, and LAMP. The dye has a long Stokes shift of 480/613 nm (excitation/emission), allowing excitation by the same green/blue channel as EvaGreen® Dye, and detection in the orange (JUN™ or ROX™) channel. EvaRuby™ Dye can be combined with probe-based qPCR reactions with little cross-talk in other channels.
High Resolution Melt Data Difference Plot. EvaRuby™ Dye at 1X in Forget-Me-Not™ Universal Probe qPCR Master Mix (Cat. No. 31043) was used to detect the Applied ... See More

EvaRuby™ Dye Features

  • Flexible: Unique orange/red DNA-binding dye that can be seamlessly integrated with qPCR probes to expand multiplexing capabilities with ease and precision
  • Versatile: Enables the combination of probe-based qPCR with HRM® analysis in a single reaction
  • Spectrally Unique: Long Stokes shift and minimal cross-talk in neighboring detection channels, ensuring cleaner and more reliable data
  • Convenient: Easily confirm your results with melt curve analysis rather than time consuming post-qPCR gel electrophoresis

View Product Page

Forget-Me-Not™ EvaGreen® qPCR Master Mix

Forget-Me-Not™ qPCR Master Mix is a hot-start EvaGreen® Dye-based master mix for use in real time PCR applications and melt curve analysis. Its color-change system helps ensure that both master mix and template get added to each reaction, so you can catch pipetting mistakes and avoid wasting time, reagents, and your precious DNA samples.

To learn more about our master mixes, please see Forget-Me-Not™ Master Mix Technology.

Forget-Me-Not™ EvaGreen® qPCR Master Mix (2-Color Tracking)
A comparison of the raw fluorescence signal from qPCR reactions performed with two EvaGreen® master mixes (Forget-Me-Not™ EvaGreen® and Fast EvaGreen®) and Quan... See More

Forget-Me-Not™ Universal Probe qPCR Master Mix

Forget-Me-Not™ Universal Probe qPCR Master Mix
Figure 3. Forget-Me-Not Universal Probe Master Mix works exceptionally well for mutiplexed probe PCR reactions.

Forget-Me-Not™ Universal Probe qPCR Master Mix is a high-performance mix for all fluorescent probe-based PCR applications, including quantitation and SNP genotyping. It is suitable for hydrolysis probes and displacement probes, performs well in singleplex and multiplex reactions, has broad instrument compatibility, and can be used in standard and fast protocols.

To learn more about our master mixes, please see Forget-Me-Not™ Master Mix Technology.

N-Flux™ 5X Digital PCR Master Mix

N-Flux™ 5X Digital PCR Master Mix is a high-performance, dye-free mix specially formulated for chip-based digital PCR (cdPCR) platforms. The mix minimizes interactions with hydrophobic plastic surfaces for optimal sample partitioning, resulting in superior separation between positive and negative partitions. N-Flux™ 5X digital PCR Master Mix reproducibly performed genotyping and copy number variation analysis with quantitative discrimination.

  • Robust: Sensitive and reproducible performance in dPCR and qPCR
  • Optimal partitioning: Reduces interactions with plastic, boosts end-point fluorescence
  • Compatible with all fluorescent probe-based technologies: Including TaqMan®, dual-labeled BHQ® probes, and displacement probes
  • 5X concentration: Ideal for samples too dilute for 2X master mixes
High-resolution, multiplex copy number variation analysis performed using N-Flux™ 5X Digital PCR Master Mix on the COMBiNATi Microfluidic Array Partitioning (MA... See More

Full List of Master Mixes

VeriFluor™ Far-Red Passive Reference Dye

VeriFluor™ Far-Red is a far-red passive reference dye with reliable and steady fluorescent signal for normalizing the reporter dye during PCR. VeriFluor™ acts as a direct replacement for Mustang Purple™ and as an alternative to ROX passive reference dye, allowing more flexibility when designing multiplex qPCR reactions. Unlike Mustang Purple™, VeriFluor™ also has demonstrated insensitivity to common buffer additives, such as DTT.

Non-normalized qPCR plot with Forget-Me-Not™ Master Mix with EvaGreen® (Greens) and VeriFluor™ Far-Red Passive Reference (Purples) on the QuantStudio 5 qPCR ins... See More

Features

  • Provides a reliable and steady fluorescent signal that enables accurate normalization of qPCR reactions
  • Serves as an alternative to ROX, allowing greater flexibility for designing and optimizing multiplexed qPCR assays
  • Functions as a direct, drop-in replacement for Mustang Purple™ on most instruments
  • Unlike Mustang Purple™, VeriFluor™ is compatible with DTT-containing qPCR reactions
  • Exhibits greater solubility than ROX for easier mixing and more accurate results
  • Supplied as a stand-alone dye solution for use with our Forget-Me-Not™ Master Mixes or other qPCR master mixes

Eva-EZ™ Polymerase Activity Assay

Sample data from an EvaEZ assays, showing a titration of Taq DNA Polymerase.

EvaEZ™ Fluorometric Polymerase Activity Assay Kit provides an easy and accurate way to assess the activity of a polymerase without radioisotopes. This EvaGreen® Dye-based kit exhibits an increased rate of fluorescence that is positively correlated to the activity of polymerase. The assay can be used for Taq, Pfu, Vent, Phusion®, Bst, Phi29, MMLV, AMV, SuperScript®, T4 DNA polymerase, T7 DNA polymerase, Klenow, and E. coli DNA polymerase I.

Viability PCR Dyes & Kits

Biotium is proud to have developed the cutting-edge technology of viability PCR (v-PCR), a technique in which cell viability can be assessed by treating a sample with a dead cell-specific DNA-binding dye, followed by a qPCR or isothermal amplification reaction. We offer two photoreactive, membrane-impermeant, v-PCR dyes (PMA and PMAxx™) that offer superior dead cell selectivity over traditional culture-based methods and the previous EMA v-PCR dye. To learn more about this technology and our portfolio of reagents for viability PCR, please see Viability PCR Technology.

PCR Accessory Reagents & Related Products

FAQs

EvaGreen® dye is spectrally similar to FAM or SYBR® Green I, which means no change in optical settings is required for using an EvaGreen®-based master mix. However, there are several differences between the dyes.

Lower background fluorescence: EvaGreen® dye has less background than SYBR® Green I due to its novel “release-on-demand” DNA-binding mechanism.

Brighter and non-inhibitory:  EvaGreen® is less inhibitory in the PCR reaction than SYBR® Green, permitting the use of saturating dye concentration for maximal signal and better high-resolution DNA melt analysis.

Safer and more environmentally friendly: EvaGreen® dye is the first and only PCR dye to date designed to be environmentally safe.

Dye stability: EvaGreen® dye is very stable both during storage and under PCR conditions. SYBR® Green I, on the other hand, is known to degrade following multiple freeze-thaw cycles and under PCR conditions. Moreover, decomposed SYBR® Green I is reported to be even more inhibitory to PCR.

Digital PCR: EvaGreen® dye is currently the only qPCR dye to be used in droplet digital PCR (ddPCR).

For most qPCR applications, we recommend using EvaGreen® Dye, 20X  in water (31000), or one of our 2X EvaGreen® qPCR Master Mixes. EvaGreen® Dye, 2000X  in DMSO (31019) is offered for specialized applications requiring a concentrated dye solution.

If necessary, EvaGreen® Dye, 2000X  in DMSO can be diluted in water or master mix for qPCR for a final concentration of 1X in the PCR reaction.

EvaGreen® dye is spectrally similar to FAM or SYBR® Green I, which means no change in optical settings is required for using an EvaGreen®-based master mix compared to SYBR® Green-based master mixes. You can read your signal in the green fluorescence channel (FAM, SYBR® Green, or EvaGreen®) of your instrument.

Biotium offers three different EvaGreen® dye-based qPCR master mixes:

  • Forget-Me-Not™ qPCR Master Mix
  • Fast EvaGreen® qPCR Master Mix
  • Fast Plus EvaGreen® qPCR Master Mix

All three master mixes contain our high-quality EvaGreen® DNA-binding dye and our fast-activating chemically-modified hotstart enzyme, Cheetah™ Taq.

Forget-Me-Not™ qPCR Master Mix is our newest master mix formulation. For most purposes this is the master mix that we would recommend, as it has many benefits: best sensitivity and signal, blue tracking dyes in the master mix and template to reduce pipetting errors, and low cost. Fast EvaGreen® qPCR Master Mix is a sensitive, general use master mix that does not contain blue tracking dyes. Fast Plus EvaGreen® qPCR Master Mix has a slightly different formulation than the regular Fast EvaGreen® qPCR Master Mix, and was designed for more challenging samples.

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