SuperSignal™ West Dura Extended Duration Substrate
SuperSignal™ West Dura Extended Duration Substrate
Thermo Scientific™

SuperSignal™ West Dura Extended Duration Substrate

Thermo Scientific SuperSignal West Dura Extended Duration Substrate is a luminol-based enhanced chemiluminescence (ECL) horseradish peroxidase (HRP) substrate ideal forRead more
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Catalog NumberKit ContentsQuantity
34075Luminol/Enhancer, 50mL, Stable Peroxide Buffer, 50mL100 mL
34075X4Luminol/Enhancer, 50 mL4 x 100 mL
34076Luminol/Enhancer, 100mL, Stable Peroxide Buffer, 100mL200 mL
34076X4Luminol/Enhancer, 100 mL4 x 200 mL
37071Stable Peroxide Buffer, 10mL, Luminol/Enhancer, 10mL20 mL
Catalog number 34075
Price (USD)
395.00
Each
Add to cart
Kit Contents:
Luminol/Enhancer, 50mL, Stable Peroxide Buffer, 50mL
Quantity:
100 mL
Request bulk or custom format
Price (USD)
395.00
Each
Add to cart
Thermo Scientific SuperSignal West Dura Extended Duration Substrate is a luminol-based enhanced chemiluminescence (ECL) horseradish peroxidase (HRP) substrate ideal for quantitative western blotting with stable light output for mid-femtogram level detection for western blot analysis.

SuperSignal West Dura Extended Duration Substrate characteristics include:
Sensitivity: mid-femtogram
Stability: 24-hr working solution stability; 1-year kit stability at room temperature
Compatibility: nitrocellulose and PVDF membranes
Signal duration: 24 hours
Recommended primary antibody concentration: 1:1,000–1:50,000 dilution (0.02–1.0 μg/mL)
Recommended secondary antibody concentration: 1:50,000–1:250,000 dilution (4–20 ng/mL)

Compare and view all western blot chemiluminescent substrates ›

SuperSignal West Dura Extended Duration Substrate for HRP is optimized for high sensitivity and long signal duration, making it ideal for cooled CCD camera-based detection systems. Unlike substrates with signals that decline to barely detectable levels in 30–60 minutes, the signal produced with SuperSignal West Dura chemiluminescent substrate is stable for 24 hours, allowing multiple film or camera exposures.
For Research Use Only. Not for use in diagnostic procedures.
Specifications
Product TypeSubstrate
Detection MethodChemiluminescence
FormLiquid
For Use With (Application)Western Blot
Membrane CompatibilityNitrocellulose, PVDF
Product LineSuperSignal™
Quantity100 mL
SubstrateHorseradish Peroxidase
Recommended Antibody Concentrations2°: 1:50-250K (4-20ng/mL), 1°: 1:5K (0.02- 1μg/mL)
SensitivityMid-femtogram
Signal Duration24 hr.
Sufficient For12 Mini-Gel Blots, 1000 sq. cm of Membrane
Kit ContentsLuminol/Enhancer, 50mL, Stable Peroxide Buffer, 50mL
Unit SizeEach
Contents & Storage
Sufficient For: 12 mini-gel blots; 1000 cm2 of membrane
• Luminol/Enhancer, 50 mL
• Stable Peroxide Buffer, 50 mL

Store at room temperature.

Frequently asked questions (FAQs)

Will SuperSignal West Dura Extended Duration Substrate work with nucleic acid blots (Southern blotting, etc.)?

Yes. However, SuperSignal West Dura Extended Duration Substrate was optimized for use in Western blots and is generally not sensitive enough for most nucleic acid protocols. For Southern and Northern blotting, use our North2South Chemiluminescent Nucleic Acid Hybridization and Detection Kit (Cat. No. 17097), North2South Chemiluminescent Substrate for HRP (Cat. No. 17295), or the Chemiluminescent Nucleic Acid Detection Kit, if probing for biotinylated probes (Cat. No. 89880).

Find additional tips, troubleshooting help, and resources within our Protein Electrophoresis and Western Blotting Support Center.

How can I increase the sensitivity of my Western blot?

Consider transferring to a different membrane or using a different detection method. We have observed increased sensitivity when using PVDF membranes in place of nitrocellulose. On PVDF membranes, using as little as 1 µg of total rat brain protein, PKC can be detected with alkaline phosphatase-mediated chromogenic detection in some cases using affinity-purified antibodies at a concentration of 0.5 µg/mL. Detection sensitivity can also be increased by using chemiluminescent detection, especially when using a SuperSignal West enhanced chemiluminescence subtrate (https://www.thermofisher.com/us/en/home/life-science/protein-biology/protein-assays-analysis/western-blotting/detect-proteins-western-blot/western-blot-detection-reagents/detection-technologies-western-blotting/chemiluminescent-western-blot-detection/supersignal-chemiluminescent-substrates.html) such as SuperSignal West Pico PLUS, SuperSignal West Dura, or SuperSignal West Femto. The secondary antibody should be used as recommend by the manufacturer and optimized as needed.

Find additional tips, troubleshooting help, and resources within our Protein Electrophoresis and Western Blotting Support Center.

Can I use SuperSignal West Dura Extended Duration Substrate with the identical protocol (i.e., same dilutions) I used with the SuperSignal West Pico Chemiluminescent Substrate?

No, these SuperSignal substrates require different dilutions. If you follow the SuperSignal West Pico Chemiluminescent Substrate protocol when you use SuperSignal West Dura Extended Duration Substrate, you will see high background or a decreased signal intensity and or duration. You must use less (more dilute) primary and secondary antibodies with SuperSignal West Dura Extended Duration Substrate (see product instructions for recommended ranges).

Find additional tips, troubleshooting help, and resources within our Protein Assays and Analysis Support Center.