Blue anodized aluminum blocks hold tubes upright and promote conduction of heat or cold from the Temp-Zone area on selected models of Purifier Cell Logic Biosafety Cabinets to help maintain sample temperature. Rack holds 4 conical 50 mL tubes

Blue anodized aluminum blocks hold tubes upright and promote conduction of heat or cold from the Temp-Zone area on selected models of Purifier Cell Logic Biosafety Cabinets to help maintain sample temperature. Rack holds 4 flat 50 mL tubes