Matched context for purifier and header

The page lists matched contexts for purifier and header.

Share - purifier	Share - header	Phrase
32.35%	5.00%	exhaust [physical/chemical] {purifier or header}
4.31%	5.03%	exhaust [physical/chemical] {purifier or header}
20.06%	0.73%	gas {purifier or header}
1.56%	1.71%	air {purifier or header}
1.61%	0.61%	{purifier or header} chamber
0.96%	0.36%	{purifier or header} [does] have
1.38%	0.34%	include {purifier or header} [perform operation]