Exhibit 31.3

Chief Executive Officer Certification

I, David A. Battat, certify that:

1. I have reviewed this annual report of Atrion Corporation; and

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report.

Date: May 22, 2020
	/s/ David A. Battat
	David A. Battat
	President and
	Chief Executive Officer