2 ms·
The same filters were used in the second trial. If they perform worse over time, that seems like an unfair comparison.
by neolog 6y ago
The same filters were used in the second trial. If they perform worse over time, that seems like an unfair comparison.
- bluGill 6y agoTypically they filter better over time, but at the expense of less airflow. Thus it is really hard to draw any conclusions.