King County Elections will perform logic and accuracy testing on ballot counting and processing equipment at 1 p.m. tomorrow at the King County Elections office, 919 S.W. Grady Way in Renton.

Logic and accuracy testing is a standard pre-election procedure. King County Elections does the testing to ensure that tabulation hardware and software functions properly and is accurately programmed for each election. Following the test, Elections will lock and seal all of the equipment for use in the primary election on Aug. 7.