Aerostrip Fine Bubble Diffuser - 10 to 15 Years Lifespan - Video
One of the most documented researches was published by Dr. Michael Stenstrom from University of California Los Angeles (UCLA). They sampled AEROSTRIP diffusers from the plant of Bremerton, WA, USA after 11 years of continuous operation and conducted plenty of measurements in clean water as well as off-gas in wastewater.
The result showed an efficiency of 80% of the original measured values. A second trial after mechanical washing with high-pressure of the aeration elements brought an efficiency of 90% of the original records, which was considered a notable performance