biofilter

"But I have more people to bring through the biofilter."

"Every one of those people down there should be wearing a biofilter."

One drawback is the amount of land required for a biofilter.

"Even a targeted biofilter would be enough to screen out the formula."

No wonder it didn't matter when the biofilter removed the virus itself.

A biofilter can be constructed in many different ways.

Now the biofilter will be able to handle this bug."

The pattern analyzers and biofilter are working fine, but I'm not sure that we're getting everything.

"Why does everyone want to talk about the biofilter?

"Nothing as big as a virus can get through a biofilter."

All you need to do is go through the transporter biofilter."

For large volumes of air, a biofilter may be the only cost-effective solution.

Something new to Federation science-and the biofilter as well, apparently.

I used a Biofilter at each end, a heater and a sheet of slate.

"On average we get 90 percent-plus control efficiency" from the biofilter, he said.

"At least it was dead after it got through the biofilter.

"The transporter biofilter will remove the virus itself from our tissue."

"Your mother," he said, backing toward the wall, "was the one who really perfected the biofilter?"

Either they were uninfected, or the biofilter removed them.

"That must be why the transporter biofilter didn't work."

The virus itself could be removed from their tissue using a standard transporter biofilter.

That's why the biofilter detected alien matter even though the virus itself was purged.

"But why didn't the biofilter also eliminate the spores?"

"Dried and sterilized, of course, so it wouldn't set off the biofilter alarms."

The transporter's biofilter strained out most alien parasites, but not all of them.