Exhibit 31.2

CERTIFICATION

I, Beth Jantzen, certify that:

1. have reviewed this Amendment No. 1 to Annual Report on Form 10-K of Applied DNA Sciences, Inc;

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: December 16, 2019

/s/ Beth Jantzen

Beth Jantzen, CPA

Chief Financial Officer

(Principal Financial Officer)