Each employee who was a participant in the Science Kit Plan on September 30, 1998, became a Participant in this Plan as of October 1, 1998, provided that on such date he or she was an Eligible Employee. Each other employee who had service with Science Kit, Central, or any affiliate thereof prior to October 1, 1998, and who had completed at least one year of Credited Service for eligibility purposes (after application of paragraph (b)(i) below) on or before October 1, 1998, became a Participant in this Plan as of October 1, 1998, provided that on such date he or she was an Eligible Employee.