NEW YORK–(BUSINESS WIRE)–Fitch Ratings has affirmed PerkinElmer Inc.’s (PerkinElmer) Issuer Default Rating (IDR) at ‘BBB’. The Rating Outlook is Stable. A full list of PerkinElmer’s ratings follows the end of this release. KEY RATING DRIVERS –Gross debt leverage has generally remained between 2.0x and 2.5x, and Fitch expects this metric to continue to approximate these levels in most periods. As has been the case historically, Fitch anticipates that gross leverage could temporarily exceed 2.