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
Have Questions?
Change viewbuttonViewtableView
Catalog NumberKit ContentsQuantity
37071Stable Peroxide Buffer, 10mL, Luminol/Enhancer, 10mL20 mL
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
Catalog number 37071
Price (USD)
132.00
Each
Add to cart
Kit Contents:
Stable Peroxide Buffer, 10mL, Luminol/Enhancer, 10mL
Quantity:
20 mL
Request bulk or custom format
Price (USD)
132.00
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™
Quantity20 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 For2 Mini-Gel Blots, 200 sq. cm of Membrane
Kit ContentsStable Peroxide Buffer, 10mL, Luminol/Enhancer, 10mL
Unit SizeEach
Contents & Storage
Sufficient For: 2 mini-gel blots; 200 cm2 of membrane
• Luminol/Enhancer, 10 mL
• Stable Peroxide Buffer, 10 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.

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.

Can I "fix" my overexposed film when using SuperSignal West Dura Extended Duration Substrate?

We offer the Pierce Background Eliminator Kit (Cat. No. 21065) that reduces high background, shading, speckling, and over-exposed bands on exposed film.

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

How can I increase detection sensitivity with SuperSignal West Dura Extended Duration Substrate?

Treating the nitrocellulose or PVDF membrane with Western Blot Signal Enhancer (Cat. No. 21050) before blocking can boost the chemiluminescent signal of low-intensity bands.

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

Can I strip and reprobe my western blot when using SuperSignal West Dura Extended Duration Substrate?

Nitrocellulose and PVDF membranes can be stripped following detection with SuperSignal chemiluminescent substrates, for reprobing. Restore Western Blot Stripping Buffer (Cat. No. 21059, 21063) can be used to gently but efficiently remove probes from the western blot membrane without damaging the target protein. In most cases, re-blocking of the membrane is not necessary.

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