BioLife Solutions (NASDAQ:BLFS – Get Free Report) was upgraded by equities researchers at Zacks Research from a “hold” rating to a “strong-buy” rating in a research note issued on Tuesday,Zacks.com reports. Weiss Ratings reaffirmed a “sell (d-)” rating on shares of BioLife Solutions in a research note on Friday, July 17th. Finally, Maxim Group cut shares of BioLife Solutions from a “strong-buy” rating to a “hold” rating in a research report on Wednesday, July 22nd. Get BioLife Solutions alerts:Get Our Latest Research Report on BioLife SolutionsBioLife Solutions Trading Down 1.5%NASDAQ BLFS opened at $31.50 on Tuesday. Recommended StoriesReceive News & Ratings for BioLife Solutions Daily - Enter your email address below to receive a concise daily summary of the latest news and analysts' ratings for BioLife Solutions and related companies with MarketBeat.com's FREE daily email newsletter.