dave t

I guess there is a point at either end of the scale where dwell time makes a difference. too fast is no good too slow is no good either.

the only way to properly test a scrubber is to do a controlled breakthrough test and then to do a percentage used test. The breakthrough test will tell you under given conditions how long your scrubber will last and a percentage used test will tell you how efficient it is, just because it breaks through at say three hours does not mean all the sorb is used up. A redesign of the scrubber may make it more efficient so your breakthrough test may now strech to three and a half hours because (due to a better design) your scrubber is more efficient