View Post Ad Biz | Agencies | Brands PUR Taps Arnold for AOR Duties By Kiran Aditham on Dec. 20, 2013 - 9:52 AM To kick things off today, let’s start with Kaz/Helen of Troy, the parent company of water filtration brand PUR, which has selected Arnold Worldwide to serve as its new agency of record. Yes, there was a review and the incumb ...