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A high-performance dye-based qPCR master mix containing EvaGreen®, Cheetah™ HotStart Taq Polymerase, and the Forget-Me-Not™ 2-color tracking system.
2X Forget-Me-Not™ EvaGreen® qPCR Master Mix is a ready-to-use high performance dye-based master mix for qPCR and DNA melt curve analysis. The 2X Master Mix contains EvaGreen® dye, Cheetah™ HotStart Taq DNA Polymerase, dNTPs, and a low concentration of an inert blue dye, which allows the user to easily distinguish wells containing reaction mix from empty wells. For 2-color tracking, mix your template with Forget-Me-Not™ Template Buffer to see at a glance which wells have master mix or template.
Note: We also offer 2X Master Mix (99801-10ML) for standalone purchase for customers who do not wish to use template buffer.

Figure 1. Left: 1X Forget-Me-Not™ Master Mix. Right: 1X Forget-Me-Not™ Master Mix after addition of DNA template mixed with Forget-Me-Not™ Template Buffer.
Catch pipetting mistakes and avoid wasting time, reagents, and your precious DNA samples. The 2-color tracking Forget-Me-Not™ EvaGreen® qPCR Master Mixes features a unique combination of a master mix containing a low concentration of blue dye and a DNA template buffer containing a high concentration of blue dye. When you add the 2X Forget-Me-Not™ Master Mix to your reaction, it appears light blue (Figure 1, left). Then, when you add template containing Forget-Me-Not™ Template Buffer to the reaction, the color turns dark blue (Figure 1, right). The Forget-Me-Not™ Template Buffer is optional if you do not require 2-color tracking. You can also use Forget-Me-Not™ EvaGreen® qPCR Master Mix (Low ROX or High ROX), which are premixed with ROX and allow single-color tracking.
Forget-Me-Not™ qPCR Master Mix is formulated for fast cycling PCR parameters, but can also be used with regular cycling protocols. It performs as well as our Fast EvaGreen® Master Mix, and as well or better than Qiagen’s QuantiNova® SYBR® Green PCR Master Mix in a real-time PCR assay (Figure 2), while making it easy for you to make sure your reactions are set up correctly the first time, every time.

Figure 2. Real-time PCR data comparing Forget-Me-Not™ (blue lines) with Biotium’s Fast EvaGreen® (green lines) and Qiagen’s QuantiNova® SYBR® Green (gray lines) master mixes. A. Amplification curves on linear scale. EvaGreen® dye-based master mixes yield higher signal compared to the SYBR® Green-based mix. B. Amplification curves on logarithmic scale. Forget-Me-Not™ performs as well or better than the other master mixes. NTCs: non-template controls (dashed lines).
An environmentally friendly, non-mutagenic, and non-cytotoxic DNA-binding dye with features ideal for both qPCR and High Resolution Melt® (HRM) analysis. EvaGreen® Dye binds to dsDNA via a novel “release-on-demand” mechanism, which prevents dye transfer from amplicon to amplicon and permits the use of a relatively high dye concentration in qPCR without PCR inhibition. Learn more about EvaGreen® Dye for qPCR.
Cheetah™ HotStart Taq DNA Polymerase is Biotium’s proprietary chemically-modified hot-start DNA Polymerase. Cheetah™ Taq is completely inactive at room temperature, and is fully activated after 2 minutes at 95°C, making it particularly suitable for fast cycling PCR protocols.
ROX is required as a passive reference dye in some qPCR systems to compensate for well-to-well optical variations. Refer to the table below for the passive dye requirements of real-time PCR instruments. Product #31041 is supplied without ROX, while product #31042 is supplied with a separate vial of ROX. For master mixes with pre-mixed ROX, use Forget-Me-Not™ EvaGreen® qPCR Master Mix (Low ROX or High ROX)
| Reference Dye | PCR Instrument |
|---|---|
| Low ROX (~50 nM) | Applied Biosystems®: 7500, 7500 Fast, ViiA™7, Quant-Studio™ instruments Stratagene (Agilent): MX4000P, MX3000P, MX3005P |
| High ROX (~500 nM) | Applied Biosystems®: 5700, 7000, 7300, 7700, 7900, 7900HT, 7900HT Fast, StepOne™, StepOnePlus™ |
| No ROX required* | BioRad: iCycler™, MyiQ™, MiQ™ 2, iQ™ 5, CFX Opus, CFX-96 Touch™, CFX-384 Touch™ and Connect™, Chromo4™, MiniOpticon™ Qiagen: Rotor-Gene® Q, Rotor-Gene® 3000, Rotor-Gene® 6000 Eppendorf: Mastercycler® Realplex Illumina: Eco™ RealTime PCR System Cepheid: SmartCyler® Roche: LightCycler® 480, LightCycler® 2.0 |
| Fluorescein** | BioRad: iCycler™, MyiQ™, MiQ™, iQ™ |
Download a list of Forget-Me-Not™ EvaGreen® Master Mix References
Download a list of Forget-Me-Not™ EvaGreen® Master Mix References
The ROX concentration is 35 nM which is suitable for low ROX instruments. If you are using a high ROX instrument, you can add ROX, 25 mM in TE Buffer (Catalog # 29052) which is available separately (Cat # 29052).
Our original EvaGreen® Dye is a saturating dsDNA binding dye that is superior for quantitative real-time PCR (qPCR), high-resolution melt (HRM), digital droplet PCR (ddPCR) and other genomics applications over SYBR® Green I and other commercial PCR dyes. It offers several essential features critical for PCR and related applications including high thermal, chemical and photostability, high sensitivity due to high signal to noise related to its novel release-on-demand mechanism, non-inhibitory to PCR, and lack of dye migration. In addition, EvaGreen® Dye is non-toxic, non-mutagenic, and not hazardous to aquatic life.
EvaGreen® Plus Dye is an advanced version of the original EvaGreen® Dye, retaining the same essential benefits while providing a higher signal-to-noise ratio. This greater sensitivity offers further advantages for digital PCR and isothermal applications.
EvaGreen® Dye is used in all of Biotiums dye-based qPCR master mixes, which combine superior brightness and sensitivity, with the ability to do melt curve analysis in the same reaction. The new EvaGreen® Plus Dye is available as a stand-alone 20X solution in water.
0.5X to 1X EvaGreen® is commonly used for LAMP applications when fluorescent signal is read by instrumentation. For detection by eye, an increased concentration of EvaGreen® can be used. For example, Lee, S. H. et al. tested up to 100X EvaGreen® and found that 10X EvaGreen® was optimal for their assay.
Lee, S. H. et al. Front. Microbiol., 09 January 2017 | https://doi.org/10.3389/fmicb.2016.02166