Round 1/2" (13mm) diameter, Tough-Spots (Labels) for 1.5ml to 2.0ml microcentrifuge tubes. Made of polyvinyl. Temperature Range: -196°C to 80°C. Specify color, 1000/roll Mfgr #T-SPOT-50
Round 3/8" (9.5mm) diameter, ToughSpots (Labels) for 500µl to 0.65ml microtubes or larger. Made of polyvinyl. Cryogenic Temperature Range: -196°C to 80°C. Specify color, 1000/roll