What is WESTAR-ONE EXTREME?
WESTAR-ONE EXTREME is a patented, next-generation chemiluminescent substrate specifically developed for researchers who demand the highest levels of sensitivity in Western blot detection. Featuring an innovative single-solution formulation, it delivers low-femtogram detection sensitivity, making it the most sensitive ready-to-use ECL substrate in its category.
Designed to simplify workflows while maximizing analytical performance, WESTAR-ONE EXTREME eliminates the need for reagent mixing, reducing preparation time and minimizing potential experimental variability. Bring the reagent to room temperature, and it is ready for use.
The superior signal intensity generated by WESTAR-ONE EXTREME enables the detection of extremely low protein concentrations that may remain undetectable with conventional chemiluminescent substrates, providing greater confidence when working with low-abundance proteins, limited sample quantities, or challenging biological targets.
Benchmarked against: Benchmarked against Immobilon® Forte under identical experimental conditions.
Key Performance Data at a Glance

Why Choose WESTAR-ONE EXTREME
Exceptional Sensitivity for Challenging Targets
Under identical experimental conditions, WESTAR-ONE EXTREME demonstrated superior detection performance compared with Immobilon® Forte, revealing six detectable bands versus three and highlighting its remarkable sensitivity and signal-generation capability.
High Performance with Lower Antibody Consumption
The substrate’s outstanding efficiency enables the use of significantly higher antibody dilutions while maintaining strong signal intensity, resulting in lower reagent consumption, reduced experimental costs, and improved laboratory productivity.
Patented One-Solution Technology
WESTAR-ONE EXTREME’s patented one-solution technology eliminates reagent mixing, reducing hands-on time and workflow complexity while maximizing convenience and reproducibility.
Ready-to-Use After Reaching Room Temperature
Bring WESTAR-ONE EXTREME to room temperature, and it is ready for use — no additional preparation steps, reducing experimental variability.