Collocations for sterile - adj.

be
remain
make sth
keep sth
This top fits over the bottle and keeps the teat sterile.

completely

under sterile conditions
The experiment was performed under sterile conditions.

be
become
remain
leave sb, make sb, render sb

be
become
Their relationship had become sterile over the years.

very
increasingly
the increasingly sterile debate on constitutional reform

largely
rather

Sterile is used with these nouns:
bandage, dressing, needle, syringe, water