Reusable reagent reservoir cooler is a custom-fit companion for VistaLab 100 ml reagent reservoirs, and will maintain fluid temperatures at <5 C for up to 2 hours. Manufactured with non-toxic gel encased in heavy duty PVC, these bright blue coolers chill or freeze quickly, are reusable, and provide full and consistent reservoir cooling without the contamination risks or inconvenience of ice baths. Reagent reservoirs have been redesigned with trimmed base corners and deeper pour-off spouts for spill-free emptying, and a deep well design that maximizes reagent recovery. Four volumes are available: 100, 50 and 25 ml and 25 ml divided. All reservoirs are sterilized by gamma irradiation and are available packaged in 100 and 200 unit cases or individually wrapped. An optional lid for 100 ml reservoirs minimizes evaporation and eliminates dust or other contaminates.